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I got Verizon Note 4.
Verified that it is unlocked. Not stolen. No contract binded from Verizon store and through phone (Clean phone)
Android Version : 5.0.1
Location: Las Vegas
Insert AT&T sim card. No signal.
Change APN setting following the information on AT&T website. Still not working. No signal.
At&t store rep. said I need to l unlock the phone ( I already check with Verizon via phone and store)
Verizon rep. on phone said: I should be able to use the phone with At&t sim card
Verizon Rep. in store said : Galaxy note 4 won't work on AT&T. It needs to be rooted by an expert. Only Galaxy S5 or later version will work.
I searched websites and many say that they are using Verizon Note 4 on AT&T network (At&t sim card)
I just need to use phone and text message. No data needed.
Anybody can help me?
I was able to use SIM from AT&T before yesterday, but after trying to update the firmware using Software Upgrade Assistant tool on Windows 10, it's now stuck at 'searching for service'.
Did you change the network settings from global to lte/GSM?
I am reading this. Maybe a solution.
Did you try to insert a different carrier sim card and entering the unlock code?
---------- Post added at 09:27 PM ---------- Previous post was at 09:24 PM ----------
After reading post i see you have a att sim sim on verizon phone. This could be a problem as verizon and att dont play nice. Stupid question is did you actually pay for service?
cozmohoot said:
Did you change the network settings from global to lte/GSM?
Click to expand...
Click to collapse
I did. Not working
It is not working. No verizon sim card message is gone but still no signal.
sam369 said:
I am reading this. Maybe a solution.
Click to expand...
Click to collapse
Yes I did. Not working
cozmohoot said:
Did you change the network settings from global to lte/GSM?
Click to expand...
Click to collapse
dayse said:
It is not working. No verizon sim card message is gone but still no signal.
Click to expand...
Click to collapse
Yeah. Me either.
Did you do a factory reset after software update. Usually helps. Also mess with APN settings. Reboot after changing APN.
Problem solved.
Changing APN settings and reboot did not work. I just inserted the Verizon SIM came with the phone and made a phone call. Of course it's not activated, so I hang up when it reached Verizon automated system. Guess what, now SIM from Lycomobile works. H2O Wireless SIM also works. It means that it now can work with AT&T and T-Mobile network.
sam369 said:
Problem solved.
Changing APN settings and reboot did not work. I just inserted the Verizon SIM came with the phone and made a phone call. Of course it's not activated, so I hang up when it reached Verizon automated system. Guess what, now SIM from Lycomobile works. H2O Wireless SIM also works. It means that it now can work with AT&T and T-Mobile network.
Click to expand...
Click to collapse
I'm in a similar boat as you (4.4.4 on Cricket Wireless, wanting to upgrade to 5.1.1). I just want to make sure I understand what you did to restore service:
1. You had phone working on AT&T with an older Android version (KK?)
2. You upgraded to a newer version via the Verizon upgrade tool (I assume 5.0.1 since 5.1.1 is not yet available via the tool)
3. You lost AT&T service after upgrade
4. You were able to restore AT&T service by using an inactive Verizon SIM and making a phone call
Is this correct? TIA
ftkftw said:
I'm in a similar boat as you (4.4.4 on Cricket Wireless, wanting to upgrade to 5.1.1). I just want to make sure I understand what you did to restore service:
1. You had phone working on AT&T with an older Android version (KK?)
2. You upgraded to a newer version via the Verizon upgrade tool (I assume 5.0.1 since 5.1.1 is not yet available via the tool)
3. You lost AT&T service after upgrade
4. You were able to restore AT&T service by using an inactive Verizon SIM and making a phone call
Is this correct? TIA
Click to expand...
Click to collapse
Mostly, except that I tried to upgrade from 5.0.1 to 5.1.1, but found that 5.1.1 was not yet available via the tool, but the process of installing the software on windows 10 and maybe I also used the Verizon SIM during the process which might have messed something up. I updated the firmware to 5.1.1 by downloading the zip file in a thread here and flashed it through recovery. The network connection problem was then solved by making a phone call with the SIM came with the phone.
sam369 said:
Mostly, except that I tried to upgrade from 5.0.1 to 5.1.1, but found that 5.1.1 was not yet available via the tool, but the process of installing the software on windows 10 and maybe I also used the Verizon SIM during the process which might have messed something up. I updated the firmware to 5.1.1 by downloading the zip file in a thread here and flashed it through recovery. The network connection problem was then solved by making a phone call with the SIM came with the phone.
Click to expand...
Click to collapse
I just updated via the Verizon tool (BPA1 finally showed up) and it was, surprisingly, perfectly fine. I first backed up as much as I can (via Smart Switch and Helium app), then pulled my mSD card, left my SIM card in the phone, and proceeded to update. After the first boot stuff (app optimization, etc.) I soon saw the AT&T sign in the notification bar, and I was able to make a phone call without doing anything else. With all the reports of SIM card locking after updating I was worried that I might run into the same issue, but was pleasantly surprised that I didn't. I had to re-enter the APN setting as the upgrade seemed to have removed it, but after re-adding Cricket's APN I was able to get cellular data as well.
Thanks again for your help
You need to access the hidden menu and change your radio and modem protocols. There's a forum on XDA called domestic and internation sim or network unlock for spring but should work the same on verizon
fyi, i got my note 4 working on gsm using 2 different freedompop sims-the at&t lte sim gets lte via band 4.
the global sim based on t-mobile did get hpsda+
just change the apn
I have a att note 10+ that I sim unlocked it will take a Verizon sim and work 100% but it will not work with straight talk i have no service can't call text and no data every once in awhile a text will get thru but can anyone help me with this I can't root because I can't oem unlock unless there is another way any help would be appreciated
ackaite said:
I have a att note 10+ that I sim unlocked it will take a Verizon sim and work 100% but it will not work with straight talk i have no service can't call text and no data every once in awhile a text will get thru but can anyone help me with this I can't root because I can't oem unlock unless there is another way any help would be appreciated
Click to expand...
Click to collapse
Did you set the APN information correctly?
Also are you using the N975U1 firmware or the standard AT&T firmware?
Are you using the BYOD sim card from straight talk?
What have you done over the phone with Straight Talk as far as troubleshooting? - this one can be important. If the phone isn't working with straight talk only it maybe a configuration (apn setting) or provisioning issue.
Are you sure the device is compatible with the area or region your in?
What provider/tower (Verizon, AT&T, etc.) does straight talk have you going through?
More information on what you have done to setup the phone for straight talk, troubleshooting steps you have taken, what information straight talk may have provided (etc. etc.) will help others be able to help you. Providing little or no details makes it rather hard to offer any help.
The apn won't let me put dun in the type I sim unlocked it with a puk code and got strighttalk byop I tried flashing the U1 firmware to it wouldn't take it so I did a Verizon firmware thinking that might help and same thing with the striaght talk it doesn't wanna work i put a Verizon sim in it and it works just like it did on ATT so I'm confused as to why the straight talk sim won't work they can't figure it out on their end either
I factory reset the phone reset network settings did just about everything I could with the phone besides it being funny about the apn cuz it says apn cannot be changed on this device if you put dun in the apn type i dunno the only thing I notice is when the Verizon sim card is in the phone the network mode is set to global whereas with the striaght talk its LTE/CDMA and it won't let you change it to global
ackaite said:
The apn won't let me put dun in the type I sim unlocked it with a puk code and got strighttalk byop I tried flashing the U1 firmware to it wouldn't take it so I did a Verizon firmware thinking that might help and same thing with the striaght talk it doesn't wanna work i put a Verizon sim in it and it works just like it did on ATT so I'm confused as to why the straight talk sim won't work they can't figure it out on their end either
Click to expand...
Click to collapse
Straight Talk uses different mobile providers to offer service different areas.. They utilize Verizon, AT&T, Sprint and T-Mobile (Sprint and T-Mobile have merged recently, but Sprint towers are still active).
I have seen posts across the internet that indicate you should be using the U1 firmware on the phone.. I would make sure your converting the phone to the U1 firmware properly.
If I recall correctly (this is how I did it previously) when flashing the U1 firmware make sure your doing it without the sim card installed and using the non home_csc file. Factory data reset the phone after you successfully flash the U1 firmware and then insert the sim card after setting the phone back up (so it can apply the new sim/network settings).
I would strongly suggest you do not restore a backup during initial setup when you do this. If you restore a backup it may restore previous network settings/configurations that were for what you had previously.
If flashing U1 firmware doesn't help (and since this this is a Straight Talk specific issue) then it's more then likely on the end of Straight Talk. I would call them and make sure that your sim card is the correct one for the cell towers they have you going through and the phone you have. Using an incompatible sim card (or one that is faulty) can cause issues like this. You can also have them send you another sim card to try.
Also contact them to make sure the service is properly provisioned and activated on your phone. Double check the APN with them, and see if they have an alternative one to try. It is also possible that a service outage maybe (or issue with Straight Talk internally) in your area, so I would call them to make sure that neither are not the case here.
ackaite said:
I factory reset the phone reset network settings did just about everything I could with the phone besides it being funny about the apn cuz it says apn cannot be changed on this device if you put dun in the apn type i dunno the only thing I notice is when the Verizon sim card is in the phone the network mode is set to global whereas with the striaght talk its LTE/CDMA and it won't let you change it to global
Click to expand...
Click to collapse
The Global setting doesn't really matter in this case and your phone will be set to use the towers that Straight Talk has you going through.
The only thing that I can think of that would be a problem with network mode is if your sim card from straight talk is meant for a different provider then the towers they use in your area (i.e. sim card is for AT&T but the provider they have for the area is Sprint).
the straight Talk sim works in other phones no problem a s8 and a older note im thinking att has something in the software to block other apns i dunno i unlocked it with a PUK code and flashed verizon firmware on it thinking i could get passed it but the verizon sim works 100% and the att sim works 100% too but a straighttalk sim card (verizon) towers the phone tries it shows 4g and disappears and then it shows it has service but cant call it just says emergency calls only
ackaite said:
the straight Talk sim works in other phones no problem a s8 and a older note
Click to expand...
Click to collapse
I would not use older phones as a means to say the sim card is good. Besides that's irrelevant to what is going on with the Note 10+
ackaite said:
im thinking att has something in the software to block other apns
Click to expand...
Click to collapse
Then this means one of two things... Either you didn't get the phone unlocked or else you did not convert to another carrier (or the U1 firmware XAA region) correctly.
If your using the unlocked firmware (U1 XAA region) then you should be able to edit the APN. If not then you should be able to create one.
ackaite said:
i dunno i unlocked it with a PUK code and flashed verizon firmware on it thinking i could get passed it but the verizon sim works 100% and the att sim works 100% too but a straighttalk sim card (verizon) towers the phone tries it shows 4g and disappears and then it shows it has service but cant call it just says emergency calls only
Click to expand...
Click to collapse
That sounds like either the sim card isn't good, the phone was not activated/provisioned properly in there systems (call them and double check IMEI and model information), the phone is not compatible with the service they offer in your area (I suggest using the XAA region U1 firmware in this case) or else your phone is not fully unlocked.
I would also suggest google searching or else asking them for any updated or alternative APN's to try. It maybe very likely the one you have is not suitable for the phone/area... It wouldn't be the first time I have had an issue similar to this like this.
I am opt to believe the first 3 are the most likely scenarios since the phone works on Verzion with the sim card per your indication.
Yeah and the only reason I tried the older phone is to see if the sim card is activate with the number and the phone itself pulled the apn from network when I tried to flash to U1 the phone gave me a error but it took the Verizon firmware for the 975U but its still not working do you know of a good link for the firmware your talking about so I can try that
ackaite said:
Yeah and the only reason I tried the older phone is to see if the sim card is activate with the number and the phone itself pulled the apn from network
Click to expand...
Click to collapse
From personal experience I would advise in the future you don't do that. When you activate the phone you should activate the one you are using and definitely do not use an older phone to activate a newer phone. I have had many problems with this in the past as provisioning for an older phone didn't always work for my newer ones..
ackaite said:
when I tried to flash to U1 the phone gave me a error but it took the Verizon firmware for the 975U but its still not working do you know of a good link for the firmware your talking about so I can try that
Click to expand...
Click to collapse
I waited for you to give more information on the issue, but you didn't. So I am sorry, but if you don't provide the details of what is going on it makes helping you very difficult. You didn't say what error you are getting, what the firmware version(s) are of what your trying to flash and what is currently on the phone.
Here's the last piece of help I can offer now.
I can tell you that the following can be found on the forum by searching:
Links and how to obtain the firmware - Multiple threads asking the same question exist here. Also Frija, SamFirm, SamMobile are just a few examples of what can be found referenced here.
Bootloader version(s) - what will happen when you try to downgrade and what will happen (along with a important thing) when you upgrade.
Websites to find firmware - SamMobile and some others have been mentioned.
Patched Odin - In case you need the latest version it has been mentioned here already.
I can also tell you that by using Google and searching for SM-975U1 XAA on Sammobile does in fact work.
Brother give me root file for note 10 plus SM-N975U android 10 version one Ul version 2.5 plz help me
Hey everyone,
I'm new to flashing phones but have experience flashing other hardware; still, I felt it prudent to ask for some guidance on this being my first attempt:
I have a Straight-Talk phone which is active and working with 4G that I would like to swap the SIM over to use in my Galaxy S10+ from Verizon.
Swapping the SIM without flashing limited the functionality to be contingent on WiFi; 4G would not work correctly.
So I suspect I'll need to flash with unlocked firmware to get it to work properly.
I have downloaded the G975U1_SAU_1.zip which is what I think I'll be needing to pull this off, as well as the latest available download of Odin (3.14.1).
Before I get started, I'd just like to ask some Questions:
Should I leave the intended SIM (Straight-Talk) in the S10+ (Verizon) while I'm flashing, or insert it after the flashing?
Am I using the correct firmware to flash this Verizon phone to work with Strait-Talk? (United States regions)
Also should I back up the intended SIM in some fashion before proceeding with this process (if so what software if any would be advisable for this?)
Is there anything I need to watch out for?
Am I on the right track for what I'm attempting to do?
Thanks in advanced for any help! :highfive:
=Bender
Bender The Great said:
Hey everyone,
I'm new to flashing phones but have experience flashing other hardware; still, I felt it prudent to ask for some guidance on this being my first attempt:
I have a Straight-Talk phone which is active and working with 4G that I would like to swap the SIM over to use in my Galaxy S10+ from Verizon.
Swapping the SIM without flashing limited the functionality to be contingent on WiFi; 4G would not work correctly.
So I suspect I'll need to flash with unlocked firmware to get it to work properly.
I have downloaded the G975U1_SAU_1.zip which is what I think I'll be needing to pull this off, as well as the latest available download of Odin (3.14.1).
Before I get started, I'd just like to ask some Questions:
Should I leave the intended SIM (Straight-Talk) in the S10+ (Verizon) while I'm flashing, or insert it after the flashing?
Am I using the correct firmware to flash this Verizon phone to work with Strait-Talk? (United States regions)
Also should I back up the intended SIM in some fashion before proceeding with this process (if so what software if any would be advisable for this?)
Is there anything I need to watch out for?
Am I on the right track for what I'm attempting to do?
Thanks in advanced for any help! :highfive:
=Bender
Click to expand...
Click to collapse
Insert SIM after flashing. You need the current U1 firmware from sam mobile. You also need the patched version of Odin that's floating around the forums here. No need to backup your SIM, but using Odin will reset your phone to brand new. Nothing that I can think of, you just put the correct Odin file in each slot and hit go. Seems like you're onto it, you need 3 things which are patched Odin, latest firmware, and I think phone drivers so your PC recognizes the phone. Should be able to find these on Samsung website or other parts of the web.
Thanks for the support!
After your encouragement, I rechecked my firmware made sure to acquire the USB Drivers from Samsung.
Successfully flashed the phone and its now working as intended!
:victory:
I used the Frija tool mentioned here to make sure I had the right files.
And the Driver install came from here.
Thanks again for your support! :highfive:
=Bender
No problem man, glad to help. Good you posted links too so others can do the same if they're having issues.
Absolutely!
Anything I can do to help pay it forward.
I should also mention I got my CSC code from the list posted at
Droid Views dot com /how-to-change-csc-in-samsung-galaxy-phones/
(Won't let me post the outside link given that I'm new)
The code was required to use Frija to download the correct firmware.
(The 4GB download averaged at 2.5MB/s)
Here is the list I saw on the aforementioned page; I used XAA
Code:
[LIST]
[*]ACG – Nextech/C Spire
[*]ATT – AT&T
[*]CCT – Comcast
[*]LRA – Bluegrass Cellular
[*]SPR – Sprint (CDMA)
[*]TFN – Tracfone
[*]TMB – T-Mobile
[*]USC – US Cellular
[*]VMU – Virgin Mobile USA
[*]VZW – Verizon
[*]XAA – USA (unbranded/unlocked/default)
[*]XAS – USA (unbranded/unlocked)
[/LIST]
Random questions:
If you start with a Tmobile GM-S975U that is carrier unlocked (got unlock code from tmobile)
Will it work just fine with straight talk? If not Does changing the CSC code work, and to which code?
Is different firmware required? like U1?
Unoid said:
Random questions:
If you start with a Tmobile GM-S975U that is carrier unlocked (got unlock code from tmobile)
Will it work just fine with straight talk? If not Does changing the CSC code work, and to which code?
Is different firmware required? like U1?
Click to expand...
Click to collapse
The U1 software for the S-10 plus is strait from Samsung and has no carrier bloat. All US S-10 pluses are the same, no matter who the carrier is. That means you can flash any vendors rom as long as you don't go backwards on the bootloader version. The phone gets set up by the simm card installed on the first boot. The good things about the U1 software is there is no vendor bloat and your updates come straight from Samsung. Don't forget, you have to us the customized Odin to flash with.
Deatailed info and Odin link can be found here. https://forum.xda-developers.com/s10-plus/how-to/guide-g975f-flashing-megathread-faqs-t3936704
Thanks for the reply. Should straight talk just work? My friend says data isn’t working on tmo firmware. What firmware and Csc code would work with them?
curious, do mobile Hotspot work, or is carrier still able to block it?
Hi,
I've got a Samsung A50 that I originally got from Xfinity Mobile, a Verizon MVNO. It worked fine when I switched to T-Mobile but wouldn't work on US Mobile, another Verizon MVNO, because on this model you can't change the APN's manually. I suspect that although it was supposed to be unlocked, Xfinity messed with the ROM to make it harder to use on other Verizon services.
Question: Is there a way I could reflash this so it would be a more standard A50, and allow me to edit APN's and then use it on US Mobile. I like the phone, and would love to keep using it but need to be able to manually edit APN's.
thanks for your help.
android94301 said:
Hi,
I've got a Samsung A50 that I originally got from Xfinity Mobile, a Verizon MVNO. It worked fine when I switched to T-Mobile but wouldn't work on US Mobile, another Verizon MVNO, because on this model you can't change the APN's manually. I suspect that although it was supposed to be unlocked, Xfinity messed with the ROM to make it harder to use on other Verizon services.
Question: Is there afway I could reflash this so it would be a more standard A50, and allow me to edit APN's and then use it on US Mobile. I like the phone, and would love to keep using it but need to be able to manually edit APN's.
thanks for your help.
Click to expand...
Click to collapse
I'm going to revise and revisit my post so that this goes a little more concisely for anyone who wants to do it in the future - Thanks for hanging in with me Android, too little sleep and time... LOL
Changing your device to VZW CSC - YES So this can certainly be done - XFinity exclusively runs on Verizon's network so your hardware won't give you any issues, you just need new ROM software. Let's start with first things first - did you pay off the device with Xfinity/Comcast and request the code from them to Carrier Unlock (OR carrier unlock it elsewhere) - because we'll need the hardware to be carrier unlocked before we continue too far down the road. I assumed you had - but to generalize it for everyone getting your device carrier unlocked so we CAN change its CSC will be step 1.
1. Make sure your device is Carrier Unlocked - (Will take the sim of any carrier it supports in hardware - not locked to XfinityMobile_ IF you paid off your phone with Xfinity Mobile you can just call them and request an unlock code and they'll send you one - if they can't/won't Samkey has 2 code readers - 1 of them oughta work PM me...
2. Now that you have an unlocked device your hardware will allow you to change CSC flash a new ROM, etc, but you still need the software for that VZW )Verizon) CSC to be available before you can switch your device to it. The vest way to accomplish this purpose is to crossflash yoru device from the carrier specific ROM device you have now the SM-A505U CCT to the SM-A505U1 XAA which is the US multi=carrier rom which wou ld have come with your phone if your bought an unlocked unbranded device fro Samsung direct in the first place - you can turn your unlocked U device into a U1 and back though why you'd want to??? by using the RaymondPatched Odin which will ignore the checks that it's the same model.
The ODIN you shall use for the purpose is the 3.14.1 3B Patched ODIN, and you may find a copy of it in many places one of which is: https://odindownload.club/odin-3-14-1-patched-modded-for-windows/
You shall also need the ROM to flash - it's the ROM for the SM-A505U1 device with the XAA CSC which supports many carriers CSC including yours VZW. One place I like to find such a ROM is at samfw.com but you can use freyja tool and download it directly from Samsung if you wish - you'll just have to work a little harder... If you did this today - this would be the most current rom - just visit the device page for updates US XAA device main page https://samfw.com/firmware/SM-A505U1
Current ROM https://samfw.com/firmware/SM-A505U1/XAA/A505U1UESCCUD2
DL the ROM, unzip it, Make a backup - this will wipe your device and it should to give you a clean install and save probs down the road - use the CSC full file in the Odin slot for CSC not the CSC_Home which will save your data- you don't want to dirty flash a ROM change - the wipe will be better long term... Just backup your stuff first.
Flash your XAA rom to the device- after taking out your SIM of course....
Reboot, insert the VZW Verizon sim - should see that it's setting your device to the Verizon CSC - Profit...
If not, Use Samkey again or the code - but take the 2 off the end for Android 10. Other codes forthcoming to enter engineering - I'm tired just ask...
Good luck
L4XS
I appreciate your help. I believe USC is US Cellular, but I am using US Mobile, a Verizon MVNO so I would need VZW as my CSC. Would SamKey method allow me to change to VZW?
APN Chooser just shortcuts to the Access Points settings, where the add button and the reset to default are greyed out and not functional.
L!V3_4_XC3SS said:
I have an Xfinity device, what they've done with my device is left the underlying functionality intact, but just hidden the menu - with my formerly carrier locked device I took the action of downloading the APN Chooser app from the play store and was able to access the menu to edit my apn settings in this fashion.
You could also potentially buy a couple of SamKey credits and change your CSC to USC from CCT if the combo rom is installed on that phone, but YMMV depending on what Xfinity did to its rom.
If that fails the stock rom for your device (Your current CSC is CCT for Comcast/Xfinity Mobile) can be downloaded from https://samfw.com/firmware/SM-A505U and flashed with Odin or Heimdall either of which can be downloaded there as well - the latest rom of your phone with the US cellular CSC (carrier/country specific code) USC for settings and software is located at https://samfw.com/firmware/SM-A505U/USC/A505USQSCDUE1 Or you can look through all the roms and see which version you want if you don't want the latest and greatest for some reason.
Once again it will WIPE your device - backup what you want . I think I have an extra samkey credit you can have if you want to try that first hit me up in the PMs --
L4XS
PS - If you love US Cellular great - flash the Rom in my link- but if you think you might want to change again flash the XAS ROM (US Wholesale multi-carrier) which you can find easily from the first link on SamFW.com or you can use frija tool from the Samsung servers or whichever ROM source you prefer - if you install that one the CSC will switch to the settings of whatever carrier's sim you put in - you can see the carriers included on each rom by searching your model on samfw.com.
Click to expand...
Click to collapse
There's a good place to edit instead of making you read through the old stuff that's we found out is irrelevant. Comcast and Xfinity which are the same thing and Verizon both love to mess with their ROMS, The really the only way to proceed here and I know it gave you a scary message but if you already have your device unlocked directly from Xfinity they should have given you a code if you asked for one when you paid it off and you obviously have one or else you wouldn't have been able to use a T-Mobile SIM. Since the one-time thing if your device is unlocked it's unlocked perpetually. Which means now you can change by flashing from a single CSC ROM sm-a505u U model crossflash it with the patched Odin by Raymond will work that's 3 14. 1- B3 Patched crossflashb a U1 multi-device XAA rom regardless of whatever scary warning Samkey showed you.
They're easy to find or I can even attach him you can find the ROM on Samfw.com
Define the latest xaa ROM for the
PS - If you love US Cellular great - flash the Rom in my link- but if you think you might want to change again flash the XAS ROM (US Wholesale multi-carrier) which you can find easily from the first link on SamFW.com or you can use frija tool from the Samsung servers or whichever ROM source you prefer - if you install that one the CSC will switch to the settings of whatever carrier's sim you put in - you can see the carriers included on each rom by searching your model on samfw.com.
L!V3_4_XC3SS said:
Looks like I was reading too quickly... LOL - Yeah so with the US Mobile MVNO the best route is to do exactly that - change your CSC to VZW which is Verizon which network it's US Mobile MVNO's - and then manually enter the proper settings for your APN once you've inserted that sim - it will likely get you the correct default settings if you reset your network settings in the settings > General >reset network as the Verizon network knows how to handle US mobile sim traffic - but it's not a big deal to enter manually. If you don't have the functionality after a CSC change you'll have to change CSC and flash the VZW Rom which will definitely do the deed -
Try samkey First it's easier - I'll send you a u/p that I stil have
Click to expand...
Click to collapse
Thanks! I appreciate it. Fingers crossed.
So I checked the CSC on the phone after Odining a current Verizon firmware, but it is still CCT,CCT,CCT (comcast).
The version SW info is: A505USQSCDUE2/A505UOYNCDUE2/A505USQSCDUE2/A505USQSCDUE2
Using Samkey, it gives me an ominous warning. Says: "Your phone has special carrier settings. It is not recommended to change CSC on this model. Because Security Area (SEC) may get "Relocked" and no way to unlock it again. "
So I bailed. Any ideas? I don't understand the warning. What would happen if I continued? Is there another option?
My phone has android 11, maybe that is the problem?
I am wondering if I should use the patched Odin and try again. Or just dump this phone and buy another? Help is very appreciated.
Ohhkay then... Let's get done for you what you wanted here... full change to VZW as your CSC --- You're not far off - CCT, is Xfinity Mobile - which is an MVNO that runs exclusively on the Verizon (VZW) network so I guess it was close- It would only have switched again if the phone had Xfinity sim into a device with relevant multi-CSC firmware... That being said, - If you want to switch it to Verizon on a device with either the multi-rom XAA or the VZW ROM that you flashed plus a SIM from the relevant network - or if you're a crazy like me who like to use 2 different CSC's on a dual-sim device - you don't even need more codes of SamKey -- do the following methodology and you should get what you want.
Using Google's phone dialer or a dialer of your choice that allows codes to be initialized - if you have stock Samsung phone you can try this minus the outside set of *# #* and see what you get...
Enter the Service Mode on your device as follows: Using the dialer from above type into ita *#*#276633683782#*#* -- This is for Android 11 OneUI 3.0+ take off the 2 for an older version Samsung device if you want to generalize my instructions.
You will enter the engineering menus at (5) RF TEST -- You may not use your normal back key to navigate here, you will exit the menus... Instead you will select the 3 dots top right corner which gives you the options - END, BACK, HELP, WIFI -- End/Back are going to be the ones that are relevant - don't bother with help it's not helpful... Back - the obvious, END, kicks you out of engineering and back to your phone.
Select your only choice - 5 RF TEST - and then a couple more random things (DON'T mess with the settings unless you know what it does) until it kicks you back to the full main menu.
It's going to have options 1-7 and say MAIN MENU at the top - You will be selecting option 1 - PROTOCOL STATE , then at the following menu Select 6 - PROTOCOL SIMULATION which you select and then you will be brought to a 3 option PROTOCOL SIMULATION menu -- Select 2 IMEI PRE CFG SIMULATION - which will take you to a 5 option menu - AP - (YOUR CURRENT CSC) --> and then you get to choose CSC options that you have available to simulate - but the thing is when you reboot after simming it, it will change your CSC settings for real if you've got a SIM and ROM from VZW or the Multi carrier XAA rom. - If you've got a verizon sim you should be able to change the 2 options CSC of AP and NET1 to VZW which will put you where you need to be - or some of the other US carriers... - Change the top 2 (or 3 if you have a dual sim device setup) CSC's to your preference - write them, reboot, It'll see your sim and change to your VZW network you wanted in the first place.
Let me know how this goes for you - I've done everything you can do with that phone - if you've got the right ROM on there which do - I'll bet you can get it to a VZW stock device - install their apps, delete their bloatware with the ADB command line, and you should be good.
Good luck bud, Let me know how it goes..
L4XS
L!V3_4_XC3SS said:
Ohhkay then... Let's get done for you what you wanted here... full change to VZW as your CSC --- You're not far off - CCT, is Xfinity Mobile - which is an MVNO that runs exclusively on the Verizon (VZW) network so I guess it was close- It would only have switched again if the phone had Xfinity sim into a device with relevant multi-CSC firmware... That being said, - If you want to switch it to Verizon on a device with either the multi-rom XAA or the VZW ROM that you flashed plus a SIM from the relevant network - or if you're a crazy like me who like to use 2 different CSC's on a dual-sim device - you don't even need more codes of SamKey -- do the following methodology and you should get what you want.
Using Google's phone dialer or a dialer of your choice that allows codes to be initialized - if you have stock Samsung phone you can try this minus the outside set of *# #* and see what you get...
Enter the Service Mode on your device as follows: Using the dialer from above type into ita *#*#276633683782#*#* -- This is for Android 11 OneUI 3.0+ take off the 2 for an older version Samsung device if you want to generalize my instructions.
You will enter the engineering menus at (5) RF TEST -- You may not use your normal back key to navigate here, you will exit the menus... Instead you will select the 3 dots top right corner which gives you the options - END, BACK, HELP, WIFI -- End/Back are going to be the ones that are relevant - don't bother with help it's not helpful... Back - the obvious, END, kicks you out of engineering and back to your phone.
Select your only choice - 5 RF TEST - and then a couple more random things (DON'T mess with the settings unless you know what it does) until it kicks you back to the full main menu.
It's going to have options 1-7 and say MAIN MENU at the top - You will be selecting option 1 - PROTOCOL STATE , then at the following menu Select 6 - PROTOCOL SIMULATION which you select and then you will be brought to a 3 option PROTOCOL SIMULATION menu -- Select 2 IMEI PRE CFG SIMULATION - which will take you to a 5 option menu - AP - (YOUR CURRENT CSC) --> and then you get to choose CSC options that you have available to simulate - but the thing is when you reboot after simming it, it will change your CSC settings for real if you've got a SIM and ROM from VZW or the Multi carrier XAA rom. - If you've got a verizon sim you should be able to change the 2 options CSC of AP and NET1 to VZW which will put you where you need to be - or some of the other US carriers... - Change the top 2 (or 3 if you have a dual sim device setup) CSC's to your preference - write them, reboot, It'll see your sim and change to your VZW network you wanted in the first place.
Let me know how this goes for you - I've done everything you can do with that phone - if you've got the right ROM on there which do - I'll bet you can get it to a VZW stock device - install their apps, delete their bloatware with the ADB command line, and you should be good.
Good luck bud, Let me know how it goes..
L4XS
Click to expand...
Click to collapse
The first step gets me in HW test, and then I can't get anywhere else.
So thanks for the updating of your ROM and Device specs, and that shed the light necessary for me to understand where we are at with your device...
So the reason this has happened is because this was an originally carrier locked - model U with only a specific carrier's ROM prob the Xfinity CCT - that's the only thing it could give you as far as a CSC which is why SamKey didn't get it done for you. I'll be happy to give you another SamKey code but you won't need it - and I'll also give you a different corrected code for entry intp the menus for the second methodology I spoke about as well...
To fix this situation you'll need:
A copy of the Raymond patch version of Odin which is 3.14.1 3B Patched you can search or here's one place -- https://odindownload.club/odin-3-14-1-patched-modded-for-windows/
It needs to be patched even though you're flashing stock FW because you're going to crossflash a U device to a U1 rom which is fine 'cus it's the same hardware but full official Odin still wouldnt' allow it. This will allow you to flash a rom to your device with the XAA CSC which the multi rom... it supports myriad US carriers including the one you want. VZW...
Remember that you're going to want to backup important data before you execute this procedure - you always want to use the full CSC file in the relevant Odin slot when you change a device's ROM not the HOME_CSC (you can get away with it if you're changing CSC on same rom) because you need a wipe to ensure the best possible flash on your device - don't dirty flash the U1 ROM in an attempt to avoid backup & keep your data it will bring problems down the road.
Take out your sim before flashing the new rom
Flash your SM-A505u device with the orginal CCT CSC to a u1 (originally unlocked) device with the XAA CSC as follows:
Download the latest XAA rom for the sm-A505U1 device
here's one place that usually does a decent speed download:
https://samfw.com/firmware/SM-A505U1 then go choose XAA in the CSC box,
If you did it today this would be the latest ROM https://samfw.com/firmware/SM-A505U1/XAA/A505U1UESCCUD2
I usually recommend the latest unless you have some reason you don't want to increment your bootloader or etc. not usually relevant.
You have the patched ODIN from above, already, so now you DL the latest rom for the U1 device with the XAA CSC (American Multi-rom has a bunch of US CSC's
Extract the ODIN, unzip the Rom zip file into its parts - run the ODIN find the unzipped roms pieces and put them where they go -- except home_csc won't need that one this time. Reboot phone into download/odin mode adb reboot download at the adb prompt ought to do it 4u, and then when it comes up you can flash the rom... as i stated above
After a successful flash/reboot change CSC to VZW by rebooting after you insert the sim card of your preferred network and then it should change you over to the new CSC appropriately. In your case VZW (Verizon) should be on point.
If for some reason it doesn't, I'll give you another samkey credit or you can go for the 2nd method you won't need any credits - enter the service mode by
*#*#197328640#*#* instead of my first code and let's see where that gets us...
You could use this same situation for an international A50 device but you'd have to sub the correct ROM for your region..
Sorry this one was a little convoluted but we'll get there... Maybe I'll come back and clean it when it works for you so it will be more useful to others.
L4XS
android94301 said:
So I checked the CSC on the phone after Odining a current Verizon firmware, but it is still CCT,CCT,CCT (comcast).
The version SW info is: A505USQSCDUE2/A505UOYNCDUE2/A505USQSCDUE2/A505USQSCDUE2
Using Samkey, it gives me an ominous warning. Says: "Your phone has special carrier settings. It is not recommended to change CSC on this model. Because Security Area (SEC) may get "Relocked" and no way to unlock it again. "
So I bailed. Any ideas? I don't understand the warning. What would happen if I continued? Is there another option?
My phone has android 11, maybe that is the problem?
I am wondering if I should use the patched Odin and try again. Or just dump this phone and buy another? Help is very appreciated.
android94301 said:
The first step gets me in HW test, and then I can't get anywhere else.
Click to expand...
Click to collapse
Click to expand...
Click to collapse
android94301 said:
So I checked the CSC on the phone after Odining a current Verizon firmware, but it is still CCT,CCT,CCT (comcast).
The version SW info is: A505USQSCDUE2/A505UOYNCDUE2/A505USQSCDUE2/A505USQSCDUE2
Using Samkey, it gives me an ominous warning. Says: "Your phone has special carrier settings. It is not recommended to change CSC on this model. Because Security Area (SEC) may get "Relocked" and no way to unlock it again. "
So I bailed. Any ideas? I don't understand the warning. What would happen if I continued? Is there another option?
My phone has android 11, maybe that is the problem?
I am wondering if I should use the patched Odin and try again. Or just dump this phone and buy another? Help is very appreciated.
Click to expand...
Click to collapse
You aren't going to get locked out because you are going to get rid of that RoM that Comcast and Verizon have done a number on you got a proceed by a cross flashing your device which is hardware identical to the U1 unlocked device with the US multi-rom which is the XAA ROM available on samfw.com. Search sm-A505U1 then XAA there will be a bunch of cscs in most every us provider but that's what the xaa multi-rom does.. it gives you an unbranded device and then when you put in that Verizon sim you should switch you over automatically.. in other words with a SIM card from Verizon you should end up with the VZW CSC accordingly... But if not you can use the two methods one of Sam key you certainly welcome to have another credit or two if you need them. You're not going to break your device or leave it permanently locked and you're not getting much utility out of the damn thing anyway as is but I've done Chimera on flashing I've done all sorts of crazy things to the Samsung devices and you really they're pretty hard to break if you really really know what you're doing and how to restore things even from the Qualcomm edl mode I mean that modem is always listening for something you got to cross flash to that XAA ROM once you've done that with patched Odin your device will for all intents and purposes be exactly like the unlocked device that somebody bought directly from Samsung in the first place. I'm not going to attach the xaa ROM for obvious reasons but here's the correct Odin.
L!V3_4_XC3SS said:
So thanks for the updating of your ROM and Device specs, and that shed the light necessary for me to understand where we are at with your device...
So the reason this has happened is because this was an originally carrier locked - model U with only a specific carrier's ROM prob the Xfinity CCT - that's the only thing it could give you as far as a CSC which is why SamKey didn't get it done for you. I'll be happy to give you another SamKey code but you won't need it - and I'll also give you a different corrected code for entry intp the menus for the second methodology I spoke about as well...
To fix this situation you'll need:
A copy of the Raymond patch version of Odin which is 3.14.1 3B Patched you can search or here's one place -- https://odindownload.club/odin-3-14-1-patched-modded-for-windows/
It needs to be patched even though you're flashing stock FW because you're going to crossflash a U device to a U1 rom which is fine 'cus it's the same hardware but full official Odin still wouldnt' allow it. This will allow you to flash a rom to your device with the XAA CSC which the multi rom... it supports myriad US carriers including the one you want. VZW...
Remember that you're going to want to backup important data before you execute this procedure - you always want to use the full CSC file in the relevant Odin slot when you change a device's ROM not the HOME_CSC (you can get away with it if you're changing CSC on same rom) because you need a wipe to ensure the best possible flash on your device - don't dirty flash the U1 ROM in an attempt to avoid backup & keep your data it will bring problems down the road.
Take out your sim before flashing the new rom
Flash your SM-A505u device with the orginal CCT CSC to a u1 (originally unlocked) device with the XAA CSC as follows:
Download the latest XAA rom for the sm-A505U1 device
here's one place that usually does a decent speed download:
https://samfw.com/firmware/SM-A505U1 then go choose XAA in the CSC box,
If you did it today this would be the latest ROM https://samfw.com/firmware/SM-A505U1/XAA/A505U1UESCCUD2
I usually recommend the latest unless you have some reason you don't want to increment your bootloader or etc. not usually relevant.
You have the patched ODIN from above, already, so now you DL the latest rom for the U1 device with the XAA CSC (American Multi-rom has a bunch of US CSC's
Extract the ODIN, unzip the Rom zip file into its parts - run the ODIN find the unzipped roms pieces and put them where they go -- except home_csc won't need that one this time. Reboot phone into download/odin mode adb reboot download at the adb prompt ought to do it 4u, and then when it comes up you can flash the rom... as i stated above
After a successful flash/reboot change CSC to VZW by rebooting after you insert the sim card of your preferred network and then it should change you over to the new CSC appropriately. In your case VZW (Verizon) should be on point.
If for some reason it doesn't, I'll give you another samkey credit or you can go for the 2nd method you won't need any credits - enter the service mode by
*#*#197328640#*#* instead of my first code and let's see where that gets us...
You could use this same situation for an international A50 device but you'd have to sub the correct ROM for your region..
Sorry this one was a little convoluted but we'll get there... Maybe I'll come back and clean it when it works for you so it will be more useful to others.
L4XS
Click to expand...
Click to collapse
Yay! success at last. I can't thank you enough. Did what you said, it flashed fine, and inserted my Verizon sim, and the phone switched right over. Phone works, for data, text and voice!
Interestingly enough, the APN section of settings is still greyed out for adding or editing APN's, but since everything is working, I can live with that.
Best of all, no more Xfinity Mobile branding on the phone!
Thanks a million.
android94301 said:
Yay! success at last. I can't thank you enough. Did what you said, it flashed fine, and inserted my Verizon sim, and the phone switched right over. Phone works, for data, text and voice!
Interestingly enough, the APN section of settings is still greyed out for adding or editing APN's, but since everything is working, I can live with that.
Best of all, no more Xfinity Mobile branding on the phone!
Thanks a million.
Click to expand...
Click to collapse
I'm glad you were able to achieve a good outcome finally brother just had to fully understand where we started before we could get to the finish line-
FYI, I think in this case the grayed APN's are because it's actually being managed by Verizon's high permissioned carrier specific app which has the ability to enable/disable settings which it wants to take over itself and manage this 4u - they will send out configuration info over the air and your device will make the adjustment automatically with no intervention required from Joe User. Verizon is notorious for thinking they know better and doing this sort of thing - Xfinity that you had before runs entirely on the VZW network so you probably had the same thing there... you might be able to get em with an management app or a hiddensettings app if you really want to play around with your APN's but Verizon's thing actually does a pretty good job of keeping you on the network at a decent speed - most people wouldn't be able to improve on the verizon privileged app and it's management anyway so there's not much upside to making minor tweaks.
Hope you enjoy your sojourn on the Verizon network
L4XS
Howdy all-
I have a similar situation....I have a Galaxy A50 that was previously on Xfinity mobile. I just unlocked it with the code Xfinity provided but it is not working on US Mobile for me. No voice, text or data. USMobile tech support says it could take a day or two to "fully" unlock but I think that is a crock of $hit.
I can't change APNs and Network Operator is greyed out and says Xfinity Mobile with the new US Mobile SIM card installed.
It's my son's phone and I really do not want to wipe it to make it usable on US Mobile. Any way to adjust the settings without wiping the phone?
ClockerXP said:
Howdy all-
I have a similar situation....I have a Galaxy A50 that was previously on Xfinity mobile. I just unlocked it with the code Xfinity provided but it is not working on US Mobile for me. No voice, text or data. USMobile tech support says it could take a day or two to "fully" unlock but I think that is a crock of $hit.
I can't change APNs and Network Operator is greyed out and says Xfinity Mobile with the new US Mobile SIM card installed.
It's my son's phone and I really do not want to wipe it to make it usable on US Mobile. Any way to adjust the settings without wiping the phone?
Click to expand...
Click to collapse
So you have an unlocked phone orignating with Xfinity Mobile -
I'll tell ya that's a complete crock of **** - just a phone rep not wanting to ruin his call stats actually trying to solve your problem - they don't have the knowledge to do it anyway so don't worry about it. So you want to get it to work on US Cellular's network without any love - which version of Android is it running? 10?
Tell me what it says in the APN if you have access to APN settings... What I'm asking is does it have any correct settings for US Mobile, or is it still pointing to the Xfinity servers (Verizon) because that could very well be the issue is that your phone needs to be provisioned on the network.
I assume your US Mobile sim is active, just not connecting in that hardware? type into the Samsung dialer (Phone) if you haven't changed anything, *#4636#* put another set of *# #* on the outside if you're using google dialer, shift the cell info refresh rate toggle to immediate, and tell me which toggles are set to provisioned. Go ahead and scroll down to the bottom, trigger a carrier provisioning event there and let's see if that gives us anything.
Thanks for taking the time to try to help me out.
I can get to the APN setting screen but when I get there, all that I see is that it says " Access Point Name settings are not available for this user " . I cannot add or edit anything like I have done on other phones (like my GS9 for example).
It is running Android 11 and I 'unlocked' it using the code provided by Xfinity Mobile although it seems the code does not fully unlock the thing.
I'm trying to get it to work on US Mobile by the way NOT US Cellular (they are different, right?)
Obviously we
ClockerXP said:
Thanks for taking the time to try to help me out.
I can get to the APN setting screen but when I get there, all that I see is that it says " Access Point Name settings are not available for this user " . I cannot add or edit anything like I have done on other phones (like my GS9 for example).
It is running Android 11 and I 'unlocked' it using the code provided by Xfinity Mobile although it seems the code does not fully unlock the thing.
I'm trying to get it to work on US Mobile by the way NOT US Cellular (they are different, right?)
Click to expand...
Click to collapse
Yes they are certainly different US Mobile is an MVNO that operates on Tmobile and Verizon, so thanks for making that clear. OK so your phone is unlocked for network but Verizon/Xfinity (operates on Verizon network exclusivey) like to mess around with their roms and there's a secondary lock sometines on these devices which greys out the APN - they dont want the end user to be able to mess with it... first of all do you have the option to reset the APN settings? Sometimes that will push it out as it did for the OP of this thread. I'm not sure I've ever seen a viable solution to access this greyed out APN so type in the code *#4636#* in the default samsung phone dialer and down at the bottom trigger carrier provisioning and see if you can get US Mobile to push out a new APN to your phone first of all. Sorry for the double post - thought the first one was lost. Had a connectivity issue myself... LOL
ClockerXP said:
Thanks for taking the time to try to help me out.
I can get to the APN setting screen but when I get there, all that I see is that it says " Access Point Name settings are not available for this user " . I cannot add or edit anything like I have done on other phones (like my GS9 for example).
It is running Android 11 and I 'unlocked' it using the code provided by Xfinity Mobile although it seems the code does not fully unlock the thing.
I'm trying to get it to work on US Mobile by the way NOT US Cellular (they are different, right?)
Click to expand...
Click to collapse
Yes they are indeed 2 separate providers, the one you are trying is an MVNO which operates on T-Mobile and Verizon - so good news at least the device is compatible... LOL... so put in the code that I edited my first post to show you *#*#4636#*#* in the google dialer, or if you still have the default Samsung phone app take off the outside set of *# #* and tell me which toggles are on, you can change which bands it operates on, do a ping test for data connectivity, and down at the bottom you should be able to trigger carrier provisioning - do that please, pull the simcard, put it back in, then reboot your device and tell me if any connectivity was restored first of all - that would mean the APN was pushed out by the network to your device. Verizon & Xfiniity have a secondary lock on the APN they **** around with their ROMS so people have a hard time using a device on another network. Annoying. But we'll get it. Let me know where we stand.
Well...I have used that code before on other phones to find out how it is locked etc. When I put it in on the A50, absolutely nothing happens now, unfortunately. I did do the code before the phone was unlocked and the phone was still on Xfinity, and the only lock that was present was the carrier lock. When I got the unlock code from Xfinity and started the phone with a new SIM from USMobile, I did get the prompt for the unlock code and entering the provided code seemed to get me past the Carrier lock. But...still in my current OP situation...
That second prompt when you put in the US Mobile Sim is deceiving - that's what we wanted... 000000 or 123456 probably would have done it - I think it's the same as the SPC (Service Programming Code) there is almost no research in this area that I've been able to find outside of my own, and I'm limited in what I can do because I'm not in possession of an A-50 with the problem so if we get this you're helping others by bearing with me.
Of course the obvious thing that could be done is to just fflash the multi-rom with the US Mobile CSC included, like we did above, but that still won't unlock the APN - it's just likey to populate it with the correct values from the carrier. To do that properly would wipe your son's A50
So let's try to unlock this as it's the first best choice...
Go get this and tell me what it says on the status of your sim - should be nework unlocked but it may show the secondary protection.
Network/WIFI Info & Sim Query - Apps on Google Play
Get all details of your Mobile Network, WiFi & Sim Information.
play.google.com
This should give you a good shortcut into the APN settings to check and see if you can 1. reset to default if that will give you connectivity, and 2. Add an APN when we unlock the phone
APN Settings Shortcut - Apps on Google Play
1 Tap to open APN settings. This is shortcut app. Minimum ad. No Permission.
play.google.com
As there are a lot of folks who didn't find this obscure thread who will be happy if we figure it out. Let's try the easy stuff first and then I'll get into the ADB command line stuff and tools and codes if we can't get any love with this . So first let's try to clear the prompt "This user not allowerd to change APN Settinggs, etc.::
Make sure that you are in the range of a known Wifi Network and follow the next steps:
Turn on Wifi and wait for your phone to connect to it
While connected to the Wifi Network, reboot the phone
As soon as the device restarts it will automatically connect to the previous Wifi network
Go to APN settings following the above-mentioned path and check if you are now able to view/edit
OR
Turn Wifi ON
Go to Settings -> Mobile Networks -> Network Operators
A search will be executed and afterward, the list will be populated with one or more Network Operators
Choose the Network Provider from where you bought the SIM card
Go to Access Point Names and add the new APN
Save the data and done.
OR
With Wifi on pull your sim and reboot the phone - once booted reinsert your sim and see if it asks for a code....
Try 000000, if that doesnt' work try 123456
If none of that works We will make the attempt to access the APN settings using ADB which is the command line Android Debug Bridge... if you don't have it installed there are guides on how to do so all over XDA, the ADB shell runs not quite as root but at a much higher privilege than the normal user account, so we'll try it from there if none of those work. I 'm sorry I don't have the device or I'd come back with a definitive how to - but for now we'll have to go trial and error, guarantee we'll figure it out, it's I know Samsung devices in general and they're not that different. Many roads my friend.
ADB
Service Mode Codes
My toolbox has utilities that will get it 4 certain if need be.
L4XS
FYSA:
I recently ran into an issue with my AT&T/FirstNet Galaxy Z Fold3, on Android 12, not being able to make or receive calls when on 4G LTE. When the device was set to use only 3G/2G, it could make and receive calls just fine. Our FirstNet representative worked with his folks and it was assumed that I would need a warranty replacement device. I found this to be not true.
Here's some backround on my Fold3:
1. It was moved from ATT firmware to XAA eg. F926U to F926U1 via patched Odin.
2. It was running Android 12 when I noticed the issue.
3. Reverting to older Android 11 Firmware did not resolve the issue.
Here's the steps I took to resolve the issues with my Fold3:
1. Remove FirstNet SIM from the device and flash the latest U1 Firmware, which can be found at https://samfw.com/firmware/SM-F926U1
2. Let the device boot, skip all steps requiring sign-in, and things of that sort to just get the desktop.
3. Put an AT&T SIM into the device, it does not need to be active or provisioned. Give it a few seconds, the device will tell you its updating carrier settings, etc; and reboot.
4. Turn the device off, and boot it into Download mode.
5. Flash the firmware and userdata which can be found at https://androidfilehost.com/?w=files&flid=327759
6. Let the device boot, you'll see the AT&T logo appear, and the AT&T bloat apps.
7. Replace the inert AT&T SIM with the FirstNet SIM.
8. Profit.
I hope this helps someone, this appears to be an issue that's cropped up here and there on AT&T Forums and Reddit and I figured I'd write this up as it resolved the issue for me.
whirl08 said:
FYSA:
I recently ran into an issue with my AT&T/FirstNet Galaxy Z Fold3, on Android 12, not being able to make or receive calls when on 4G LTE. When the device was set to use only 3G/2G, it could make and receive calls just fine. Our FirstNet representative worked with his folks and it was assumed that I would need a warranty replacement device. I found this to be not true.
Here's some backround on my Fold3:
1. It was moved from ATT firmware to XAA eg. F926U to F926U1 via patched Odin.
2. It was running Android 12 when I noticed the issue.
3. Reverting to older Android 11 Firmware did not resolve the issue.
Here's the steps I took to resolve the issues with my Fold3:
1. Remove FirstNet SIM from the device and flash the latest U1 Firmware, which can be found at https://samfw.com/firmware/SM-F926U1
2. Let the device boot, skip all steps requiring sign-in, and things of that sort to just get the desktop.
3. Put an AT&T SIM into the device, it does not need to be active or provisioned. Give it a few seconds, the device will tell you its updating carrier settings, etc; and reboot.
4. Turn the device off, and boot it into Download mode.
5. Flash the firmware and userdata which can be found at https://androidfilehost.com/?w=files&flid=327759
6. Let the device boot, you'll see the AT&T logo appear, and the AT&T bloat apps.
7. Replace the inert AT&T SIM with the FirstNet SIM.
8. Profit.
I hope this helps someone, this appears to be an issue that's cropped up here and there on AT&T Forums and Reddit and I figured I'd write this up as it resolved the issue for me.
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Just to confirm this did in fact downgrade your device from One UI 4, Android 12 back down to Android 11 correct? Thanks.
mbellis said:
Just to confirm this did in fact downgrade your device from One UI 4, Android 12 back down to Android 11 correct? Thanks.
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Indeed it did. And then I updated through the OS back to 12.
I understand you flashed the U1 firmware, but what model phone do you have?
EDIT: Never mind, saw you are the person helping me Iin my thread lol