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Here's the issue. I purchased the At&t s3 (SGH-I747) last year. Long story short, I wanted to go to T-Mobile prepaid with the same phone.
I purchased the SIM activation kit for $10, popped my SIM in and it worked!
Before I put the SIM in it though, I paid for an unlock code. I still have the code.
No 'Network Unlock' screen.
No prompt for my unlock code.
I am getting H+ speeds with the at&t s3 on T-Mobile prepaid without doing ANYTHING.
My question is:
Why cant I get to the unlock screen? I have tried to dial "#7465625*638*# for the prompt to popup and NOTHING.
Can someone tell me...
1. Can I flash a T-mobile rom to this phone? (every time i try I get a build.prop error, even after changing the model to the T999 and all that jazz),
so I can't install a T-Mo rom?
2. Do I have to flash a modem/radio or anything else like that?
3. Or, should I just continue to flash At&t Roms with the t-mo prepaid sim?
I have searched for a while now, and noone has my problem. I never expected to just switch sim's and it would work, so ANY help would be appreciated.
Thanks!
bradhoschar said:
Here's the issue. I purchased the At&t s3 (SGH-I747) last year. Long story short, I wanted to go to T-Mobile prepaid with the same phone.
I purchased the SIM activation kit for $10, popped my SIM in and it worked!
Before I put the SIM in it though, I paid for an unlock code. I still have the code.
No 'Network Unlock' screen.
No prompt for my unlock code.
I am getting H+ speeds with the at&t s3 on T-Mobile prepaid without doing ANYTHING.
My question is:
Why cant I get to the unlock screen? I have tried to dial "#7465625*638*# for the prompt to popup and NOTHING.
Can someone tell me...
1. Can I flash a T-mobile rom to this phone? (every time i try I get a build.prop error, even after changing the model to the T999 and all that jazz),
so I can't install a T-Mo rom?
2. Do I have to flash a modem/radio or anything else like that?
3. Or, should I just continue to flash At&t Roms with the t-mo prepaid sim?
I have searched for a while now, and noone has my problem. I never expected to just switch sim's and it would work, so ANY help would be appreciated.
Thanks!
Click to expand...
Click to collapse
since your device is still an AT&T branded Galaxy S III (SGH-i747), you must keep with ROMs designed for that phone. flashing T-Mobile branded Galaxy S III (SGH-T999) ROMs will brick your device, same thing goes for flashing modems.
just because your SIM and Carrier is now T-Mobile, doesn't mean your phone is.
Okaham said:
since your device is still an AT&T branded Galaxy S III (SGH-i747), you must keep with ROMs designed for that phone. flashing T-Mobile branded Galaxy S III (SGH-T999) ROMs will brick your device, same thing goes for flashing modems.
just because your SIM and Carrier is now T-Mobile, doesn't mean your phone is.
Click to expand...
Click to collapse
You got that right.
:thumbup:
Sent while sleeping in chair.
Okaham said:
since your device is still an AT&T branded Galaxy S III (SGH-i747), you must keep with ROMs designed for that phone. flashing T-Mobile branded Galaxy S III (SGH-T999) ROMs will brick your device, same thing goes for flashing modems.
just because your SIM and Carrier is now T-Mobile, doesn't mean your phone is.
Click to expand...
Click to collapse
Wrong. Flashing an rom meant for the AT&T variant of the S3 on a T-Mobile variant S3 and vice versa will not brick the device. APN setting may get messed up and you have to enter them manually but it will not brick the device. Flashing a ROM for the international S3 on a U.S. variant of the S3 and vice versa will brick the device.
I wouldn't recommend flashing modems between the variants of S3s, that may or may not brick the device but wouldn't try it.
|When Emotion Goes up, Logic Goes Down|
---------- Post added at 03:40 PM ---------- Previous post was at 03:36 PM ----------
bradhoschar said:
Here's the issue. I purchased the At&t s3 (SGH-I747) last year. Long story short, I wanted to go to T-Mobile prepaid with the same phone.
I purchased the SIM activation kit for $10, popped my SIM in and it worked!
Before I put the SIM in it though, I paid for an unlock code. I still have the code.
No 'Network Unlock' screen.
No prompt for my unlock code.
I am getting H+ speeds with the at&t s3 on T-Mobile prepaid without doing ANYTHING.
My question is:
Why cant I get to the unlock screen? I have tried to dial "#7465625*638*# for the prompt to popup and NOTHING.
Can someone tell me...
1. Can I flash a T-mobile rom to this phone? (every time i try I get a build.prop error, even after changing the model to the T999 and all that jazz),
so I can't install a T-Mo rom?
2. Do I have to flash a modem/radio or anything else like that?
3. Or, should I just continue to flash At&t Roms with the t-mo prepaid sim?
I have searched for a while now, and noone has my problem. I never expected to just switch sim's and it would work, so ANY help would be appreciated.
Thanks!
Click to expand...
Click to collapse
If you want to unlock the S3 (you must be stock to do this, stocked rooted may work, but I'm not sure):
Just dial the following keys *#197328640#
Main Menu
[1] UMTS
[1] Debug Screen
[8] Phone Control
[6] Network Lock
Options [3]Perso SHA256 OFF
(after choosing this option, wait about 30 seconds, then go back one step by pressing the Menu button then select Back, now you are in
[6] Network Lock then choose
[4] NW Lock NV Data INITIALLIZ ..... wait for a minute then reboot your phone
|When Emotion Goes up, Logic Goes Down|
Hello.
If you have signal then why are you trying to use the code? It is unlocked already!
im not an expert but this is what i know from reading a lot:
1.- I installed a t-mobile (t999) rom modified to work in a att s3 (i747), i think you can flash a any rom from the t999 section (i am not sure about this)
2.- Do NOT try to install a modem from t-mobile or you will hard brick your phone.
3.- Thats a good idea, do it and let me know if it works.
I used this files to convert an i747 to a t999 http://forum.xda-developers.com/showthread.php?t=1771021&page=25 (read from post #246) so now i use customs roms for the t999 i did it because where i live do not have good signal, was stuck at edge and with those files now i have 3g signal.
Btw, i am in the $30 prepaid t mo plan.
Please read forum rules before posting
Questions and help issues go in Q&A
Thread moved
Thank you for your cooperation
Friendly Neighborhood Moderator
re: Hmm
xmanberserker said:
Hello.
If you have signal then why are you trying to use the code? It is unlocked already!
im not an expert but this is what i know from reading a lot:
1.- I installed a t-mobile (t999) rom modified to work in a att s3 (i747), i think you can flash a any rom from the t999 section (i am not sure about this)
2.- Do NOT try to install a modem from t-mobile or you will hard brick your phone.
3.- Thats a good idea, do it and let me know if it works.
I used this files to convert an i747 to a t999 http://forum.xda-developers.com/show...771021&page=25 (read from post #246) so now i use customs roms for the t999 i did it because where i live do not have good signal, was stuck at edge and with those files now i have 3g signal.
Btw, i am in the $30 prepaid t mo plan.
Click to expand...
Click to collapse
#1: If you have a Unlocked AT&T I747 Galaxy S3 you don't need any files to convert it to work on any T999 Tmobile roms.
#2: You can use any T999 Tmobile custom roms as long as you have an Unlocked & Rooted AT&T Galaxy S3 I747 Phone.
#3: There is no such thing as installing or flashing any files which would would change the frequency for 3G on a I747 phone.
#4: Your link is dead... LOL
#4: Your link is dead... LOL[/QUOTE]
http://forum.xda-developers.com/showthread.php?t=1771021&page=25 Fixed
Misterjunky said:
#1: If you have a Unlocked AT&T I747 Galaxy S3 you don't need any files to convert it to work on any T999 Tmobile roms.
#2: You can use any T999 Tmobile custom roms as long as you have an Unlocked & Rooted AT&T Galaxy S3 I747 Phone.
#3: There is no such thing as installing or flashing any files which would would change the frequency for 3G on a I747 phone.
#4: Your link is dead... LOL
Click to expand...
Click to collapse
That is not true. Before following these instructions ( http://forum.xda-developers.com/showthread.php?t=1771021&page=25 ) I could NOT install any t-mo rom as CWM verifies the make/model before installing the rom.
Hence, me having the 'installation cannot continue' build.prop=d2att.
So, now AFTER flashing the 4 files, I was able to install 3 different T-Mobile ROMS. XTREMEPERIA ( http://forum.xda-developers.com/showthread.php?t=2199018 ) was the only one that is giving me 4G. I know, I know, its all in the APN settings, but this is the only one that gave me truly 4G speeds with a T-Mo sim.
re: 3G/4G
bradhoschar said:
That is not true. Before following these instructions ( http://forum.xda-developers.com/showthread.php?t=1771021&page=25 ) I could NOT install any t-mo rom as CWM verifies the make/model before installing the rom.
Hence, me having the 'installation cannot continue' build.prop=d2att.
So, now AFTER flashing the 4 files, I was able to install 3 different T-Mobile ROMS. XTREMEPERIA ( http://forum.xda-developers.com/showthread.php?t=2199018 ) was the only one that is giving me 4G. I know, I know, its all in the APN settings, but this is the only one that gave me truly 4G speeds with a T-Mo sim.
Click to expand...
Click to collapse
You are right, clockworkmod (Rom Manager) does verify, however if you select
and flash the Tmobile T999 recovery image when flashing clockworkmod recovery
all is fine.
Another thing, if you have a unlocked i747 and flash any Tmobile cwm zip file rom as
soon as it reboots and you check the network in the phones settings it will display
"T-Mobile US" and will work properly without the need of any other files or conversions.
However the Unlocked I747 will never work with Tmobile's 3G or 4G networks.
Misterjunky said:
You are right, clockworkmod (Rom Manager) does verify, however if you select
and flash the Tmobile T999 recovery image when flashing clockworkmod recovery
all is fine.
Another thing, if you have a unlocked i747 and flash any Tmobile cwm zip file rom as
soon as it reboots and you check the network in the phones settings it will display
"T-Mobile US" and will work properly without the need of any other files or conversions.
However the Unlocked I747 will never work with Tmobile's 3G or 4G networks.
Click to expand...
Click to collapse
Ahh...good tip about CWM
I currently have 4g on my unlocked S3 from at&t currently on T-Mobile.
And, when I was on stock, I had 3g
re: Tmobile Network.
bradhoschar said:
Ahh...good tip about CWM
I currently have 4g on my unlocked S3 from at&t currently on T-Mobile.
And, when I was on stock, I had 3g
Click to expand...
Click to collapse
Yes but when you were on stock you were on the AT&T network not Tmobile.
Misterjunky said:
Yes but when you were on stock you were on the AT&T network not Tmobile.
Click to expand...
Click to collapse
No, that is incorrect. With the 4 files I flashed, I was on T-Mobile network. It was a T-Mobile ROM, T-Mobile sim, and T-Mobile radio.
bradhoschar said:
No, that is incorrect. With the 4 files I flashed, I was on T-Mobile network. It was a T-Mobile ROM, T-Mobile sim, and T-Mobile radio.
Click to expand...
Click to collapse
Quit saying you are using a T-Mobile radio before you help someone brick their phone. The radio files are NOT interchangeable between ANY of the US variants!
EtherealRemnant said:
Quit saying you are using a T-Mobile radio before you help someone brick their phone. The radio files are NOT interchangeable between ANY of the US variants!
Click to expand...
Click to collapse
Oh, my bad. I thought 'modem' and 'radio' were the same thing.
THEY ARE!!!!
Notice in the picture how under the 'phone' tab, it says MODEM.
Yes, I flashed all 4, and now have a t-mobile setup on an at&t s3.
bradhoschar said:
Oh, my bad. I thought 'modem' and 'radio' were the same thing.
THEY ARE!!!!
Notice in the picture how under the 'phone' tab, it says MODEM.
Yes, I flashed all 4, and now have a t-mobile setup on an at&t s3.
Click to expand...
Click to collapse
You need to specify that you are using an engineering image that T-Mobile used on the 747 before the T-999 was available to test the device. In general if you flash a T-Mobile radio image to a 747, you risk losing calls and data at minimum and a hard brick at worst. It is imperative to make sure to point out that it only works with THAT engineering set.
EtherealRemnant said:
You need to specify that you are using an engineering image that T-Mobile used on the 747 before the T-999 was available to test the device. In general if you flash a T-Mobile radio image to a 747, you risk losing calls and data at minimum and a hard brick at worst. It is imperative to make sure to point out that it only works with THAT engineering set.
Click to expand...
Click to collapse
Ahh...gotcha. Thats what it states in THAT OP, I just thought that once that build was on the phone, from that point on, any T-Mo anything would work. I did have the watermark on my wallpaper, but everything else said 't-mobile'.
But, yes in general, if you flash TMO onto AT&T, there be dragons.
Thanks all, and happy flashing!
Even with that configuration, the only thing T-Mobile you can flash is recovery and custom ROMs. A T-999 baseband or boot loader could very well cause a brick. Its a dangerous hack because it has everyone confused. For all intents and purposes, it is 747 software with T-Mobile's AWS capability. In fact it doesn't even seem to have DC-HSPA, only HSPA+ (21mbps versus 42). It has the benefit of supporting T-Mo LTE though.
Awesome
EtherealRemnant said:
Even with that configuration, the only thing T-Mobile you can flash is recovery and custom ROMs. A T-999 baseband or boot loader could very well cause a brick. Its a dangerous hack because it has everyone confused. For all intents and purposes, it is 747 software with T-Mobile's AWS capability. In fact it doesn't even seem to have DC-HSPA, only HSPA+ (21mbps versus 42). It has the benefit of supporting T-Mo LTE though.
Click to expand...
Click to collapse
Very good to know! Thanks for the info. Perhaps when T-Mo refarms their LTE, I won't have to do much to this beastly phone!
Thanks all!
:good:
bradhoschar said:
Very good to know! Thanks for the info. Perhaps when T-Mo refarms their LTE, I won't have to do much to this beastly phone!
Thanks all!
:good:
Click to expand...
Click to collapse
It doesn't make sense for T-Mobile to refarm their LTE. The 1700 AWS band is the most efficient spectrum they currently own and the AWS spectrum is going to be the most compatible across LTE networks. T-Mobile has pretty much no chance of ever getting the 700MHz that at&t and Verizon are using.
Good Afternoon,
I currently have an unlock SGH-T999L with 4.1.2 and MD5 baseband. My current issue is that I get 4G once I put the ATT sim card but i dont get LTE. Does anyone have configuration modification to get LTE on a LTE Tmobile phone?
Looks like you have a T999 not T999L based on your baseband.. That device does not support lte so you will not pick up lte with it
Sent from my SGH-M919 using Tapatalk
serio22 said:
Looks like you have a T999 not T999L based on your baseband.. That device does not support lte so you will not pick up lte with it
Sent from my SGH-M919 using Tapatalk
Click to expand...
Click to collapse
My apologies I have the MB7 baseband which is the one for the T999L
Alright, on the apn make sure it reads fast.t-mobile.com, everything else should be fine how it is.. Should pick up lte after that
Edit: my mistake, you need the at&t lte APN make sure it is the correct one
Sent from my SGH-M919 using Tapatalk
serio22 said:
Alright, on the apn make sure it reads fast.t-mobile.com, everything else should be fine how it is.. Should pick up lte after that
Edit: my mistake, you need the at&t lte APN make sure it is the correct one
Sent from my SGH-M919 using Tapatalk
Click to expand...
Click to collapse
I put the right settings and its proven that even if you put a Tmobile LTE phone on ATT network the most you will get is 4g
Any update on this? Just bought a T999L to use with my ATT Straight Talk SIM card, got it unlocked and HSDPA is working fine. Is not connecting to LTE though, unless I force it using *#*#4696#*#*. At that point, it shows LTE by the signal bar, but I have no data and it says "Emergency Calls Only". After a few seconds it goes back to H+ and everything works again.
I can't think of any technical reason why the phone won't work on AT&T's network, unless AT&T has blocked non-AT&T IMEI numbers?
update
srnoth said:
Any update on this? Just bought a T999L to use with my ATT Straight Talk SIM card, got it unlocked and HSDPA is working fine. Is not connecting to LTE though, unless I force it using *#*#4696#*#*. At that point, it shows LTE by the signal bar, but I have no data and it says "Emergency Calls Only". After a few seconds it goes back to H+ and everything works again.
I can't think of any technical reason why the phone won't work on AT&T's network, unless AT&T has blocked non-AT&T IMEI numbers?
Click to expand...
Click to collapse
I had this problem and i fixed it updating the APN info... I also since then have rooted, flashed a custom rom and updated my baseband to the newer NC1 but eitherway I have been using LTE or so the phone says for almost a year now...
JeepinxJosh said:
I had this problem and i fixed it updating the APN info... I also since then have rooted, flashed a custom rom and updated my baseband to the newer NC1 but eitherway I have been using LTE or so the phone says for almost a year now...
Click to expand...
Click to collapse
Can you list your APN settings and results of a speed test? I just got this phone and I am only getting H+
distortedvoice said:
Can you list your APN settings and results of a speed test? I just got this phone and I am only getting H+
Click to expand...
Click to collapse
wow sorry i took so long I just saw this... Its just the APN settings that the AlL things ATT says... http://forum.xda-developers.com/showthread.php?t=2616221 like post #4 I think... APN settings make sure you flash the newest modem for your service provider (modem will not change bootloader) and flash the ATT modules also..l. and Kernel depending on what phone you have and what service your using.... I now am on an S4 I337 ATT on ATT but was running a Tmobile app the Sickness , deadly venom, dark carnage.... they all work together.... just flash rom the kernel if needed and always flash modules for your baseband so if your supposed to be on NJ4 att kk 4.4.4 flash the NJ4 modules... and so on... sorry hope this helps
Hey guys, I have an LG G3 now on 47A that I updated using LG Flash tool/kdz. Unrooted and stock. I want to flash Fulmics but every thread says that the older versions of Fulmics didn't have working mobile data and bad connectivity for the Verizon variant. Is the new version the same? Also to root my phone and flash twrp, I heard about the tot method. However, many users say their IMEI reset to 0000000 and their phones were unable to connect to any network. How true is this? Did anyone experience this as well? Thank you everyone in advance!
Note: i am using a non Verizon 4g Sim. As of now, 4g and networks work seamlessly. Ive tried the following carriers on 4g and they all work: T-Mobile US 4g, Airtel IN 3g and 4g (both sim cards work), Vodafone AU 4g.
lg g3
TheSkilledPlaya said:
Hey guys, I have an LG G3 now on 47A that I updated using LG Flash tool/kdz. Unrooted and stock. I want to flash Fulmics but every thread says that the older versions of Fulmics didn't have working mobile data and bad connectivity for the Verizon variant. Is the new version the same? Also to root my phone and flash twrp, I heard about the tot method. However, many users say their IMEI reset to 0000000 and their phones were unable to connect to any network. How true is this? Did anyone experience this as well? Thank you everyone in advance!
Note: i am using a non Verizon 4g Sim. As of now, 4g and networks work seamlessly. Ive tried the following carriers on 4g and they all work: T-Mobile US 4g, Airtel IN 3g and 4g (both sim cards work), Vodafone AU 4g.
Click to expand...
Click to collapse
no its not true
i have lg g3 vs985 ,i tried many custom roms and flashed stock rom with the help of tot method ,nothing happens.
TheSkilledPlaya said:
Hey guys, I have an LG G3 now on 47A that I updated using LG Flash tool/kdz. Unrooted and stock. I want to flash Fulmics but every thread says that the older versions of Fulmics didn't have working mobile data and bad connectivity for the Verizon variant. Is the new version the same? Also to root my phone and flash twrp, I heard about the tot method. However, many users say their IMEI reset to 0000000 and their phones were unable to connect to any network. How true is this? Did anyone experience this as well? Thank you everyone in advance!
Note: i am using a non Verizon 4g Sim. As of now, 4g and networks work seamlessly. Ive tried the following carriers on 4g and they all work: T-Mobile US 4g, Airtel IN 3g and 4g (both sim cards work), Vodafone AU 4g.
Click to expand...
Click to collapse
The VS985 variant takes on the ROM flawlessly, but yes there have been reported data issues regarding using the variant with the Verizon network. I believe it stems from the international GSM rom built around the GSM radio interface layer. I would NOT be surprised to see that T-Mobile and others work well, but you will need to research the Fulmics thread to know for sure, as I only know that my VZW SIM does not work properly. (3G only)
kp263 said:
no its not true
i have lg g3 vs985 ,i tried many custom roms and flashed stock rom with the help of tot method ,nothing happens.
Click to expand...
Click to collapse
Thank you very much for your input. I may give it a try later.
b00ster23 said:
The VS985 variant takes on the ROM flawlessly, but yes there have been reported data issues regarding using the variant with the Verizon network. I believe it stems from the international GSM rom built around the GSM radio interface layer. I would NOT be surprised to see that T-Mobile and others work well, but you will need to research the Fulmics thread to know for sure, as I only know that my VZW SIM does not work properly. (3G only)
Click to expand...
Click to collapse
Ahh alright, I guess 3G only is fine with me (I only message people over mobile data, nothing else). I'll do my research then. So text messaging/calling works?
Thanks.
TheSkilledPlaya said:
Ahh alright, I guess 3G only is fine with me (I only message people over mobile data, nothing else). I'll do my research then. So text messaging/calling works?
Thanks.
Click to expand...
Click to collapse
Seems like SMS/Calling worked for me...but had troubles with MMS. Others were able to get both working with Textra/Handscent/etc but not the stock messenger app. It's been awhile ago since I tried the international ROM's and they're all kind of a blur from some reason. Not being able to get signal bars working was a deal breaker for me (travel in the states quite a bit) so I broke away. I believe the XSPIRIT is working on fixes for the international ROM. Once his source code becomes available it should open up a world of LG Goodness. Currently , the ROM's I tried were Andy's, TekCafe, LG Prime, Fulmics....all display the same problem, the ability for Verizon SIM's to completely work properly.
Hello, All.
I've successfully completed my quest in getting my Verizon Galaxy S7 to work with AT&T's primary LTE band; Band 17.
At first I was using the PE1 firmware with root. I first used Phone INFO (for Samsung) app to access the service code 2263. On PE1, only the factory Verizon-supplied bands were showing as supported. Band 12/17 were not showing in the service menu.
I took my chances and flashed the G930U firmware (found on the AT&T S7 forum of all things) and booted the phone with my AT&T SIM card. I ran LTE Discovery and achieved profit. Band 17 was working with the same signal as the iPhone 6S the SIM card came out of.
Also, the 930U firmware completely debrands the phone, which is perfect since I'll be using it on AT&T. After I confirmed band 17 I proceeded to root using the normal method of flashing the engboot and installing the root/SuperSU package per the root instructions. I did not use the Verizon PE1 debloater/fixes .zip files to make necessary tweaks, post root. I performed the tweaks manually (wifi fix, CPU governer: interactive, and SecurityLogAgent) .. Let me know if I'm missing anything in those regards please.
The ONLY thing I can't do now is view all the LTE bands in 2263 Service Mode. I get a "RAT Selection option: is restricted".. I want to see if all LTE bands are unlocked now. If you know of another way to see all the supported LTE bands, please let me know!
I now have exactly what I was set out to accomplish and it's great. The S7 is replacing my iPhone 6S on AT&T and I will be buying a Note 7 to replace the S7 on Verizon. If/when root is achieved on the Note 7 I will do the same and replace the Note 7 on Verizon with the iPhone 7 (I cycle my personal/business phones as a guilty pleasure if you can't tell already)
Screen shots attached
nice work, thanks for taking the plunge
Just did the same on a friend's S7 that he was trying to get on Cricket's LTE, as the VZW firmware kept him on HSPA+ at most. All I had to do was flash the AT&T firmware and bam, LTE. I forgot to check what band it was on but at least it's an additional proof of concept.
Thanks for the info!
Can u link that ROM
I haven't tried with Samsung, however, most phones with Qualcomm modems can be accessed via QXDM or similar PC software. Often the so called hacked HTC modem driver will allow QXDM to communicate with the phone.
There are XDA threads detailing how to access the appropriate LTE bands and selecting bands of choice using the above method.
AT&T and VzW both use bands 2 and 4, so you probably have all the bands that you need covered already.
xdadevnube said:
I haven't tried with Samsung, however, most phones with Qualcomm modems can be accessed via QXDM or similar PC software. Often the so called hacked HTC modem driver will allow QXDM to communicate with the phone.
There are XDA threads detailing how to access the appropriate LTE bands and selecting bands of choice using the above method.
AT&T and VzW both use bands 2 and 4, so you probably have all the bands that you need covered already.
Click to expand...
Click to collapse
The factory Verizon firmware did NOT have LTE band 12 or 17 unlocked so I was only getting HSPA+ with little spurts of band 2/4 LTE every once in a while with the AT&T SIM card in it. Flashing the 930U unlocked band 12/17 for me so I have full LTE coverage in the same spots where I only had HSPA+ before.
parin11 said:
Can u link that ROM
Click to expand...
Click to collapse
http://forum.xda-developers.com/att-galaxy-s7/how-to/xda-community-love-g930u-t3415875
One thing to note also is that the G930U firmware auto detects your carrier settings and has you restart after first boot. I'm assuming it will unlock correct bands depending on the carrier SIM you use. The G930U firmware does NOT, however, like the Verizon SIM. Upon updating carrier settings with a Verizon SIM installed, the device will reboot into recovery. Every time you power on the device it will prompt you to update the carrier settings and will have you reboot again.. back into recovery. Rinse and repeat. I had to refresh the U firmware to get my band 12/17 back after putting the Verizon SIM in.
MrBaltazar said:
One thing to note also is that the G930U firmware auto detects your carrier settings and has you restart after first boot. I'm assuming it will unlock correct bands depending on the carrier SIM you use. The G930U firmware does NOT, however, like the Verizon SIM. Upon updating carrier settings with a Verizon SIM installed, the device will reboot into recovery. Every time you power on the device it will prompt you to update the carrier settings and will have you reboot again.. back into recovery. Rinse and repeat. I had to refresh the U firmware to get my band 12/17 back after putting the Verizon SIM in.
Click to expand...
Click to collapse
That happened to me when I rooted on the ufirmware forced to reboot.
Sent from my SM-G930U using XDA-Developers mobile app
MrBaltazar said:
Hello, All.
I've successfully completed my quest in getting my Verizon Galaxy S7 to work with AT&T's primary LTE band; Band 17.
At first I was using the PE1 firmware with root. I first used Phone INFO (for Samsung) app to access the service code 2263. On PE1, only the factory Verizon-supplied bands were showing as supported. Band 12/17 were not showing in the service menu.
I took my chances and flashed the G930U firmware (found on the AT&T S7 forum of all things) and booted the phone with my AT&T SIM card. I ran LTE Discovery and achieved profit. Band 17 was working with the same signal as the iPhone 6S the SIM card came out of.
Also, the 930U firmware completely debrands the phone, which is perfect since I'll be using it on AT&T. After I confirmed band 17 I proceeded to root using the normal method of flashing the engboot and installing the root/SuperSU package per the root instructions. I did not use the Verizon PE1 debloater/fixes .zip files to make necessary tweaks, post root. I performed the tweaks manually (wifi fix, CPU governer: interactive, and SecurityLogAgent) .. Let me know if I'm missing anything in those regards please.
The ONLY thing I can't do now is view all the LTE bands in 2263 Service Mode. I get a "RAT Selection option: is restricted".. I want to see if all LTE bands are unlocked now. If you know of another way to see all the supported LTE bands, please let me know!
I now have exactly what I was set out to accomplish and it's great. The S7 is replacing my iPhone 6S on AT&T and I will be buying a Note 7 to replace the S7 on Verizon. If/when root is achieved on the Note 7 I will do the same and replace the Note 7 on Verizon with the iPhone 7 (I cycle my personal/business phones as a guilty pleasure if you can't tell already)
Screen shots attached
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With flashing the 930u firmware being possible would it be possible to then get twrp recovery working? Debating on trying just because I have an extra s7
eg2_Justin said:
With flashing the 930u firmware being possible would it be possible to then get twrp recovery working? Debating on trying just because I have an extra s7
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Unfortunately no. Bootloader is still locked and we cannot flash custom recoveries at this time.
MrBaltazar said:
Unfortunately no. Bootloader is still locked and we cannot flash custom recoveries at this time.
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Ahh I figured that was the case
Currently on stock. I get LTE with a att sim card until i place a call then it reverts to 3G. Any known issues with this method? I would really enjoy having full LTE coverage if possible
XxCyberHackerxX said:
Currently on stock. I get LTE with a att sim card until i place a call then it reverts to 3G. Any known issues with this method? I would really enjoy having full LTE coverage if possible
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Have this issue as well on VZW mvno.
Illogi.xbone said:
Have this issue as well on VZW mvno.
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I'm hoping this method can eliminate that issue. I just need multiple people to confirm this works (too scared to try it without feedback)
XxCyberHackerxX said:
I'm hoping this method can eliminate that issue. I just need multiple people to confirm this works (too scared to try it without feedback)
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The issue I have is with the U Firmware. However, the method does not trip knox. Make a Smartswitch backup and give it a go. If it still doesn't work flash back to AT&T stock and restore from your backup.
OP: if you haven't been able to allow the RAT selection i'd suggest this.
go to Service mode main menu (either broadcast cmd 27663368378 or app like shortcut master), 2. ue setting > 1. setting > 1. protocol > 5. sim > 4. EF_RAT Free Supporting > 1. EF rat free supporting on (select even if it shows on)> now RAT Free Support.
Then business as usual.
XxCyberHackerxX said:
Currently on stock. I get LTE with a att sim card until i place a call then it reverts to 3G. Any known issues with this method? I would really enjoy having full LTE coverage if possible
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Your call is being transmitted over LTE so the data reverts back to Hspa during the call. Mine does this but returns to LTE after I hang up.
MrBaltazar said:
Your call is being transmitted over LTE so the data reverts back to Hspa during the call. Mine does this but returns to LTE after I hang up.
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Thanks for the explanation. So at this point what is the point of this method? Does unlocking the band lead to a stronger signal?
XxCyberHackerxX said:
Thanks for the explanation. So at this point what is the point of this method? Does unlocking the band lead to a stronger signal?
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You unlock the band that AT&T primarily uses for LTE. Much more LTE signal throughout the nation on band 17.
I have a HTC 10 Sprint unlocked, can i use it with other carriers LTE like AT&T or T-mobile? Thanks guys
hainguyen91 said:
I have a HTC 10 Sprint unlocked, can i use it with other carriers LTE like AT&T or T-mobile? Thanks guys
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I took the chance myself and as it turns out it does work!
I can give mire detailed information and proof later.
You could convert it to a unlocked HTC 10 also. I did it to my Verizon HTC 10, now it's us unlocked with att
afuller42 said:
You could convert it to a unlocked HTC 10 also. I did it to my Verizon HTC 10, now it's us unlocked with att
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Sprint HTC 10 is a different animal. The bands will not unlock with the conversion and the GSM radio from Unlocked FW is not compatible. You would still need to flash the Sprint Radio back.
jblparisi said:
Sprint HTC 10 is a different animal. The bands will not unlock with the conversion and the GSM radio from Unlocked FW is not compatible. You would still need to flash the Sprint Radio back.
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did you managed to unlock lte band for sprint htc 10 (bootloader unlocked, S-off)? i tried to flash with US Unlocked but no imei, flash back to sprint RUU, and nv unlock it. now i'm stuck at 3G and 2G. tried with DFS i need to unlock LTE band 3 or 8 but also useless.
any advice?
the attachment is after i reflash to Sprint RUU
thanks
I have a Sprint unlocked variant running 4G on Telcel MX, in theory you can flash another firmware variant (S-OFF, of course), but the radio must be still from the equivalent Sprint firmware...
kenter said:
did you managed to unlock lte band for sprint htc 10 (bootloader unlocked, S-off)? i tried to flash with US Unlocked but no imei, flash back to sprint RUU, and nv unlock it. now i'm stuck at 3G and 2G. tried with DFS i need to unlock LTE band 3 or 8 but also useless.
any advice?
the attachment is after i reflash to Sprint RUU
thanks
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I moved on to a v20 and v10, but as I recall yes I did unlock them for ATT specifically. Tmobile LTE support is already there, but not ATT(missing one of the bands I forget which)
jblparisi said:
I moved on to a v20 and v10, but as I recall yes I did unlock them for ATT specifically. Tmobile LTE support is already there, but not ATT(missing one of the bands I forget which)
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Care to educate this ignorant fool?
Thanks
It has most bands you are good
kenter said:
Care to educate this ignorant fool?
Thanks
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Google around for LTE band unlock QXDM method for htc. You'll need the htc diag mode drivers and Qualcomm's QXDM program. I was able to unlock all of the US bands for my phone.
Edit
This was the method I used. It still works in LeeDroid (used a few weeks ago): https://forum.xda-developers.com/one-m9/general/how-to-change-network-bands-gsm-devices-t3135401
thunder2132 said:
Google around for LTE band unlock QXDM method for htc. You'll need the htc diag mode drivers and Qualcomm's QXDM program. I was able to unlock all of the US bands for my phone.
Edit
This was the method I used. It still works in LeeDroid (used a few weeks ago): https://forum.xda-developers.com/one-m9/general/how-to-change-network-bands-gsm-devices-t3135401
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Are yours is sprint htc 10 or other than that?
Cheers
kenter said:
Are yours is sprint htc 10 or other than that?
Cheers
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Mine was a network locked Sprint model. I unlocked the sim first then unlocked the bands. I'm on AT&T now with full LTE support and all of their bands unlocked. Verizon is the only one our phone won't work with.
thunder2132 said:
Mine was a network locked Sprint model. I unlocked the sim first then unlocked the bands. I'm on AT&T now with full LTE support and all of their bands unlocked. Verizon is the only one our phone won't work with.
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Thank you mate. Let me trying and i'll get back to you later. Cheers
kenter said:
Thank you mate. Let me trying and i'll get back to you later. Cheers
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Sounds good, basic process was this:
1. Install HTC diag drivers
2. Dial ##diag# in dialer or execute adb shell commands to enter diag mode
3. Open QXDM, go to options and communications, select your device and open communications to it (don't remember exactly how to do this, it was pretty self explainatory)
4. In QXDM, go to NV-items then find the LTE configs (pointed out in the threads linked)
5. Use an LTE nv calculator to find the DEC number for the bands you want (select all bands you want and it'll put out a number)
6. Enter this number into QXDM and write it. (there are two places to enter it)
7. Exit diag mode and reboot.
8. This should survive for quite some time, any time you do a ruu double check to see if it held. Factory wipes from recovery should be fine. Using a new rom should be fine. When I wiped modemst1 and modemst2 I lost this and had to redo it.
thunder2132 said:
Sounds good, basic process was this:
1. Install HTC diag drivers
2. Dial ##diag# in dialer or execute adb shell commands to enter diag mode
3. Open QXDM, go to options and communications, select your device and open communications to it (don't remember exactly how to do this, it was pretty self explainatory)
4. In QXDM, go to NV-items then find the LTE configs (pointed out in the threads linked)
5. Use an LTE nv calculator to find the DEC number for the bands you want (select all bands you want and it'll put out a number)
6. Enter this number into QXDM and write it. (there are two places to enter it)
7. Exit diag mode and reboot.
8. This should survive for quite some time, any time you do a ruu double check to see if it held. Factory wipes from recovery should be fine. Using a new rom should be fine. When I wiped modemst1 and modemst2 I lost this and had to redo it.
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i've tried with official sprint but no luck also i flash to LeeDroid v.3.9.0 stable doing exactly as you told above
using QXDM and NV calculator to change/add the lte band i want.
it just not picking up any lte signal from band 3 on *#*#4636#*#*
perhaps any step i'm missing?
thank
What carrier are you on? Have you tested with another phone to see if band 3 is active in your area?
Sent from my HTC 10 using XDA Labs
thunder2132 said:
What carrier are you on? Have you tested with another phone to see if band 3 is active in your area?
Sent from my HTC 10 using XDA Labs
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well, i'm not in the USA. i'm in indonesia.
i've tried with iphone and see band 3
kenter said:
well, i'm not in the USA. i'm in indonesia.
i've tried with iphone and see band 3
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Sorry, no clue. My best recommendation would be to do the process over and see if your settings stuck.
Sent from my HTC 10 using XDA Labs
thunder2132 said:
Mine was a network locked Sprint model. I unlocked the sim first then unlocked the bands. I'm on AT&T now with full LTE support and all of their bands unlocked. Verizon is the only one our phone won't work with.
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Are you 100% sure that the sprint version can't work on verizon even with unlocking all the bands and unlocking sim? What about doing this - https://forum.xda-developers.com/verizon-htc-10/how-to/guide-convert-unlocked-to-verizon-t3380615? Or does your phone have to be officially US unlocked version to do the switch? I'm s-off, sim unlocked, using the sprint version with AT&T right now and want to use it with a verizon mvno. So is that absolutely not possible or should I just give it a shot and see what happens? Thanks
cjbr0wn said:
Are you 100% sure that the sprint version can't work on verizon even with unlocking all the bands and unlocking sim? What about doing this - https://forum.xda-developers.com/verizon-htc-10/how-to/guide-convert-unlocked-to-verizon-t3380615? Or does your phone have to be officially US unlocked version to do the switch? I'm s-off, sim unlocked, using the sprint version with AT&T right now and want to use it with a verizon mvno. So is that absolutely not possible or should I just give it a shot and see what happens? Thanks
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The Sprint version requires the Sprint radios are in use, otherwise it won't get any signal. The Sprint radios are incompatible with Verizon, so it can't be done.