Verizon branded M8 on T-Mobile - One (M8) Q&A, Help & Troubleshooting

Hello and thanks for reading,
I'm currently a T-Mobile subscriber, but I'm using an unlocked Verizon HTC One M8.
The phone is currently rooted has S-Off and Super CID.
The problem I have is that my data connection seems to constantly drop randomly.
Whether I'm on a call, sending or receiving group messages / MMS, or simply browsing the web.
I have to switch on airplane mode at least 20+ times a day to obtain a data signal.
My cellular network type is consistently on EDGE.
I CANT SEEM TO GET ANY 4G OR LTE.
Can someone point me in the correct path to fix the issue.

I used to have this issue, until I activated T-Mobile bands that are originally deactivated by Verizon from the factory. Maybe this was a huge coincidence, but I had the exact same problems until I did this. Also flashed LolliGPE at this time.
You can use CDMA tool to achieve this. There are numerous guides on how to do this on XDA, feel free to send a PM if you need more explanation or w/e.
Also, it wouldn't hurt to factory reset from stock recovery to correct any potentially corrupted NV items.

What I've found work good is install custom rom like viper one then enter your T-Mobile mms settings then use the app called 4g switch n click the drop down n select WCDMA n should be getting a constant four bar

Sorry for such a late reply, I am currently using ViperROM and still have troubles.
I've flashed several different roms all were affected, I've tried numerous firmware and radio's none have worked.
I'm not sure how to block CDMA network keys from functioning, care to elaborate a bit?

Related

can't make or place calls, but SMS and data is fine

Hi all,
My problem is that my Galaxy S3 (i747M) cannot make or receive phone calls*, but I can send or receive most SMS**, and my LTE data is fine***. I've tested to ensure it's not my account with Rogers, or my SIM card. I took my SIM card and put it in two other phones, and both worked just fine (one Rogers, one Telus). Putting their SIMs into my phone and the same problem as with my own SIM in my phone. I have unlocked my S3 using the 4.2 trick, but I didn't have this problem back then. I'm assuming this isn't causing me issues now.
I used asterisks because each of the above has some additional details:
* I cannot reliably make and receive phone calls. For example, I can try calling the same phone number (home) 10 times, and it may only go out once. From my home phone I can try calling my cell phone 25 times and only get through once. Every time my calls out fail, it either sits at "Dialing..." for 30 seconds before ending in "Call Ended 0:00" or just immediately drops the call without the 30 seconds of "Dialing...".
** Most of the time I can send and receive SMS from any other cell phone. Occasionally a message won't send out even though I have 4/5 signal bars. Resending the message works. Not sure if this is related to my issues with calling.
*** LTE data is fine (using LTE APN). Switching away from LTE to just 4G/H+ and data is a bit spotty. Sometimes it connects, sometimes it doesn't. LTE always connects just fine.
I've tried all sorts of flashing and reflashing:
- problem started when I was on S3Rx 4.0, but I never thought much of it because most calls went through fine
- problem got worse when I was on Lollipop (CyanideL), progressively so
- used Odin to flash stock NF2 (downloaded from Sammobile site), was no different than when I was on Lollipop (CyanideL)
- used Kies to flash stock N__ (forgot exactly which one), still no different
- flashed different bootloaders and modems
- while in stock NF2 firmware, went into *#2263# and made sure it was set to Automatic.
So any ideas what problem this is? I just find it extremely odd that calls almost always fail, yet SMS and data aren't a problem. Of course, when my SIM is in another phone (Nexus 5 on Telus, Galaxy S5 on Rogers) I was able to do everything without any problems: calls, SMS, and data.
Thoughts as to what this could be? Is this a hardware issue? If it's software, what could it be? My warranty's out and I'm willing to flash anything or pop the phone open (already have to make sure antenna isn't disco'd).
Thanks!
Have you tried the fob1 firmware? It's the latest kk release for the Canadian s3.
Yup, that's the firmware I'm currently on. Downloaded it from SamMobile, flashed via Odin. I'm literally running the stock firmware right now, no root, only TWRP as recovery so I can more easily flash any modems or bootloaders (vs using fastboot).
OK, so further to this issue, I contacted Rogers technical support. Spent about half an hour on the phone with the tech, went through a few things:
1. He reset my voice account, didn't help
2. Had me search in the "Network Operators" list, no networks ever show up
3. Had me use my old phone (Nexus S, network unlocked) to ensure that it's not my account. All tests with the Nexus S went fine.
4. Had me test different network bands. Bingo!
The phone can place and receive calls when I set the network mode to 2G only (or GSM only). 3 out of 3 calls came in, 3 out of 3 calls went out. Then again later we tested incoming and outgoing calls, still on the 2G network.
So technically problem solved, but realistically not really. I am able to get voice, text, and data (solved!), but I'm paying for a LTE data package and should at least be getting 3G mad.
Any idea why my phone would be working on the 2G network and not on the other ones (3G, H+, LTE)?
This is crazy but the baseband and modem are one fob1? I know you said you flashed a stock rom but it may be worth checking.
My niece is using an unlocked bell s3 on Rogers and she has no problem with voice, data, or text when setting the network to wcdma only or wcdma/LTE.
Yes! Both Baseband (modem) and bootloader are the same. I just downloaded Phone Info (Samsung) to check this, and they both report being FOB1.
Now here's something that's irking me quite a bit. I only just discovered this and do not know if it is of consequence to my problem: I have no PDA or CSC version and Latest Firmware is reporting "Not Found" in the Firmware tab of Phone Info. I've attached a screenshot so you can all see what I mean. Is that normal?
Is phone running a custom rom?
That's right, I just restored a NANdroid of CyanideL (5.1.1).
So this also happens on a stock fob1 rom too?
I am almost tempted to say it may be a hardware issue.
That's right. This happens with a custom ROM (e.g. CyanideL, 5.1.1) as well as a stock ROM that's been freshly flashed via Odin (FOB1, 4.4.2). When flashing with Odin, I'm doing a full wipe via TWRP. Wiping /data partition as well.
I'm inclined to believe this is also a hardware issue, but it just seems bass ackwards in that I can get everything (minus LTE) working while on 2G, but I lose voice access if I move up beyond 2G. I could understand if I couldn't get any voice, SMS, or data, but that going down to 2G solves all my problems... it just seems weird!
Can you try the phone on another carrier? This would probably be the final test you could do. Sounds like you have tried everything.
Yup, tried that earlier on, when I tested my SIM card in some friends' phones (one on Rogers, one on Telus), and while doing that also tested their SIM cards in my phone. With their SIM cards in my phone, the same problem happens as when I'm using my own SIM card.
Gah! It's frustrating, but something I can live with for now until I can get a new phone. I just still can't get over the "everything's fine" on 2G, but moving up to 3G or beyond and I completely lose voice. A colleague of mine has the same phone and the same plan, bought only a month or two before I bought mine. He's got no problems at all with LTE and voice. Although he was on the unofficial CM 12.1 nightlies (5.1.1), I don't think that would have any perceivable difference than when I was on CyanideL 15.x (also 5.1.1).

Help 4g

Hello friend, i bought a new m9 and when i activate data mobile i have only 3g , i tryed factory reset, to setup my network,
I rooted my phone, installed custom room.. still no change.. anyone can know why ?
Well maybe you dont have great 4g signal in your area? Or change apn.
StyL3sX said:
Hello friend, i bought a new m9 and when i activate data mobile i have only 3g , i tryed factory reset, to setup my network,
I rooted my phone, installed custom room.. still no change.. anyone can know why ?
Click to expand...
Click to collapse
As stated already , the signal could be weak in your area. Type in the dialer key pad ##3282# and you can also look to make sure all the bands are enabled on your device. I don't see why they wouldn't be though. A handful of users have stated bad connectivity with the M9, but that's on the sprint network I have been reading about.
at ##3282# it say only OK.. nothing about enable bands and i tryed sim of my friend (vodafone 4g) he have m8 and 4g working... on my m9 doesnt..
StyL3sX said:
at ##3282# it say only OK.. nothing about enable bands and i tryed sim of my friend (vodafone 4g) he have m8 and 4g working... on my m9 doesnt..
Click to expand...
Click to collapse
I have same problem with my M9+. In Manchester Area UK
I had perfect 4G with my old M8 but with new phone only 3G!!
Let me know if you get any answers. HTC and Vodafone couldnt help me either.
Check access point names, make sure only one is listed and selected.
Go to networks and search for network, click automatic.
Open the connectivity selection and make sure that the scalable option is chosen (2g/3g/4g)
Are you using one Base with the wrong firmware? Make sure they match up.
Find a friend on the same network or shared network and see if they have 4g in your location.
Test the sim in another phone.
Call network to check for issues in your area and or if there is an error against your account, may need a new sim if that one is old.
Test in major parts of the city center next time you're shopping..
Perform a speed test to see what speed you're actually getting, hspa is up to 20mb, 4g AFAIK is around 60mb, I've had 48 before. Anything over 20 could be considered 4g, you will very very rarely see a 3G tariff go over 19mb, which is the most I've ever seen.
Good luck.
StyL3sX said:
Hello friend, i bought a new m9 and when i activate data mobile i have only 3g , i tryed factory reset, to setup my network,
I rooted my phone, installed custom room.. still no change.. anyone can know why ?
Click to expand...
Click to collapse
I have the same issue with the M9. Couldn't find an answer for this problem. Even tried opening lte bands as listed here but no luck.
The thing is that I used to get LTE where I am now, went on long holiday and can't get it to work again so no idea what's up.
Jhonys said:
I have the same issue with the M9. Couldn't find an answer for this problem. Even tried opening lte bands as listed here but no luck.
The thing is that I used to get LTE where I am now, went on long holiday and can't get it to work again so no idea what's up.
Click to expand...
Click to collapse
That's a network issue, get a new sim and speak with your provider. Try the things I listed too
dladz said:
That's a network issue, get a new sim and speak with your provider. Try the things I listed too
Click to expand...
Click to collapse
I tried my sim with my wife's iphone and i got 4g without any problem. It's not a sim issue. Whatever the problem is, it's with the device (hardware, software, settings). I remember it also took me a few weeks after getting the M9 to get a 4g signal, but then one day it just appeared so there's that to add to the mystery.
Jhonys said:
I tried my sim with my wife's iphone and i got 4g without any problem. It's not a sim issue. Whatever the problem is, it's with the device (hardware, software, settings). I remember it also took me a few weeks after getting the M9 to get a 4g signal, but then one day it just appeared so there's that to add to the mystery.
Click to expand...
Click to collapse
Reset your network settings mate, set to manual then back to automatic.
Make sure you actually catch the network on manual first before manual. You will find it, it's just a case of going through the motions.
Also click menu, reset to defaults in access point names.
dladz said:
Reset your network settings mate, set to manual then back to automatic.
Make sure you actually catch the network on manual first before manual. You will find it, it's just a case of going through the motions.
Also click menu, reset to defaults in access point names.
Click to expand...
Click to collapse
1. How do you "reset network settings"?
2. set to manual - you mean in 'Network operators' menu select 'Search networks', select my network, then go back and selecting 'Select automatically'?
3. What do you mean "just a case of going through the motions"?
4. Should I reset APN at the last step or at the beginning?
I'm trying to understand your steps as clearly as i possible can because this no 4g issue took a lot of time and effort from me and it still doesn't work. Any help is very much appreciated.
Jhonys said:
1. How do you "reset network settings"?
2. set to manual - you mean in 'Network operators' menu select 'Search networks', select my network, then go back and selecting 'Select automatically'?
3. What do you mean "just a case of going through the motions"?
4. Should I reset APN at the last step or at the beginning?
I'm trying to understand your steps as clearly as i possible can because this no 4g issue took a lot of time and effort from me and it still doesn't work. Any help is very much appreciated.
Click to expand...
Click to collapse
I am trying to help you.
There are no steps it's just a case of trying everything to do with the network. If what you say is true and you've literally just had this issue occur out of the blue then it has to be a difference on the handset, especially seeing as you have tested the sim in another phone and it works.
Reset to default is with apn, doesn't matter when you do this just reset them, make sure it's checked and cycle mobile data on and off.
Clarify that your device is set to 2g/3g/4g within network mode (I believe it's called)
And I was referring to setting network selection to manual within mobile network settings, then choosing your network, then researching and selecting automatic.
The path is: settings / mobile data / network operators / search networks, wait for yours and select it, cycle mobile data (turn off then back on) if that doesn't work, switch back to automatic.
Reboot your phone after making changes, perform the full shut down method instead of the restart or power off methods, it's power and volume up AFAIK, hold for 10+ seconds, might be 15.
Going through the motions refers to checking anything and everything which influences the network, one of these setting will get it working..
Might be seen as overkill but a factory reset (if it's not been tried already) good luck.
dladz said:
I am trying to help you.
There are no steps it's just a case of trying everything to do with the network. If what you say is true and you've literally just had this issue occur out of the blue then it has to be a difference on the handset, especially seeing as you have tested the sim in another phone and it works.
Reset to default is with apn, doesn't matter when you do this just reset them, make sure it's checked and cycle mobile data on and off.
Clarify that your device is set to 2g/3g/4g within network mode (I believe it's called)
And I was referring to setting network selection to manual within mobile network settings, then choosing your network, then researching and selecting automatic.
The path is: settings / mobile data / network operators / search networks, wait for yours and select it, cycle mobile data (turn off then back on) if that doesn't work, switch back to automatic.
Reboot your phone after making changes, perform the full shut down method instead of the restart or power off methods, it's power and volume up AFAIK, hold for 10+ seconds, might be 15.
Going through the motions refers to checking anything and everything which influences the network, one of these setting will get it working..
Might be seen as overkill but a factory reset (if it's not been tried already) good luck.
Click to expand...
Click to collapse
I know you are trying to help me, and I very much appreciate it. Truly am.
I tried doing all the steps you listed, but no luck. Even tried at some point to force lte only in 4636 screen but that resulted in no signal at all. Trying to manually select a network in that setting only gives me the other 2 networks that work in the area but not vodafone which is what I use.
As a complete overkill I RUU earlier to the new 2.11.617 firmware without signing into my google account or restoring anything, and still no lte. What I did saw however, in the select network screen, was that next to my network, it said 2g/3g and next to the other 2 networks here it said 2g/3g/4g. Obliviously I can't select them as it's a vodafone simcard.
I added here SS from LTE discovery app while i was on 'lte only' mode. You can see signal is there but it cannot connect.
Any wild ideas or suggestions? I'm opened to try almost anything
Just out of interest, have you tried a different sim card? I know you said that your sim worked in another phone but I'd still be tempted to contact voda to get a new sim and to see if everything is set up on a network level, you may have to tell via that the issue is persistent in different phones or they may make you pay for it.
Also, might be something to do with the association between your phone and your sim. I once had a sim that blocked my missus, she could call me but I couldn't call her, no active diverts of any kind, I could call anyone and they could call me, got a new sim and it was sorted. Very strange, but anomalies like this do occur.
Have you got any mods or are you at stock at the moment? I know you said ruu. Oh and lol click thanks BTW.
dladz said:
Just out of interest, have you tried a different sim card? I know you said that your sim worked in another phone but I'd still be tempted to contact voda to get a new sim and to see if everything is set up on a network level, you may have to tell via that the issue is persistent in different phones or they may make you pay for it.
Also, might be something to do with the association between your phone and your sim. I once had a sim that blocked my missus, she could call me but I couldn't call her, no active diverts of any kind, I could call anyone and they could call me, got a new sim and it was sorted. Very strange, but anomalies like this do occur.
Have you got any mods or are you at stock at the moment? I know you said ruu. Oh and lol click thanks BTW.
Click to expand...
Click to collapse
Well the thing is that my wife's sim card in my phone only gets 3g. On her iPhone it's 4g. My sim card in my wife's iPhone gets 4g. On my phone only 3g so it seems like a very specific problem with my device.
Shortly after ruu I installed viper 3.5 without any mods..
Can it be that my device is somehow blocked by the network towers or something of that nature?
Maybe a hidden setting somewhere that blocking the phone's 4g capabilities? This is getting ridiculous..
Thanks for your help mate. Can't believe I forgot to press the thanks button [emoji2]
Sent from my HTC One M9 using Tapatalk
Jhonys said:
Well the thing is that my wife's sim card in my phone only gets 3g. On her iPhone it's 4g. My sim card in my wife's iPhone gets 4g. On my phone only 3g so it seems like a very specific problem with my device.
Shortly after ruu I installed viper 3.5 without any mods..
Can it be that my device is somehow blocked by the network towers or something of that nature?
Maybe a hidden setting somewhere that blocking the phone's 4g capabilities? This is getting ridiculous..
Thanks for your help mate. Can't believe I forgot to press the thanks button [emoji2]
Sent from my HTC One M9 using Tapatalk
Click to expand...
Click to collapse
No worries fella
If you've already tried another sim and it's still not happening, the firmware matches the rom, your sim works in other phones with 4g. Then I'm really not sure mate..
Give Lee droid a whirl that's what I'm using at the moment.. A simple but great rom..
I'm pretty much out of ideas now, if all of the above has been checked then it's something that I'm not aware of.. Sorry mate..
for the record it is a weird one, something should have got it working by now..
---------- Post added at 12:58 AM ---------- Previous post was at 12:56 AM ----------
Are you in a position to be able to return the device? Just in case
dladz said:
No worries fella
If you've already tried another sim and it's still not happening, the firmware matches the rom, your sim works in other phones with 4g. Then I'm really not sure mate..
Give Lee droid a whirl that's what I'm using at the moment.. A simple but great rom..
I'm pretty much out of ideas now, if all of the above has been checked then it's something that I'm not aware of.. Sorry mate..
for the record it is a weird one, something should have got it working by now..
---------- Post added at 12:58 AM ---------- Previous post was at 12:56 AM ----------
Are you in a position to be able to return the device? Just in case
Click to expand...
Click to collapse
Thanks for the help mate.
I can't return the device as it was bought in the states and I live in Europe at the moment.
I think I will try to change my sim card for a new one just in case, and will change back to stock 2.11.617 for a couple of days to see if that can make any difference.
Will post an update if i will have one.
Jhonys said:
Thanks for the help mate.
I can't return the device as it was bought in the states and I live in Europe at the moment.
I think I will try to change my sim card for a new one just in case, and will change back to stock 2.11.617 for a couple of days to see if that can make any difference.
Will post an update if i will have one.
Click to expand...
Click to collapse
Good luck fella, hope it all works out for you. With it being bought in the states would the band frequency of the device make a difference? Just spitballing there. Good luck..
dladz said:
Good luck fella, hope it all works out for you. With it being bought in the states would the band frequency of the device make a difference? Just spitballing there. Good luck..
Click to expand...
Click to collapse
Yes it would. He probably bought a cdma and has to have the correct bandwidths unlocked.
Sent from a stolen (and crap) HTC M9
shivadow said:
Yes it would. He probably bought a cdma and has to have the correct bandwidths unlocked.
Sent from a stolen (and crap) HTC M9
Click to expand...
Click to collapse
Then that would make sense.

Ported AT&T from Cricket (AT&T), nxtgenphone APN gives no data?????

So I jumped on the AT&T/DirecTV Unlimited data deal and ported my phone today. It all looked normal and I got the activation texts and such - it even populated the nxtgenphone APN info (though it was deselected and I had to select it). Anyway, I've had no data at all. As a test, I switched the APN to phone and data works, but the speeds appear to be much lower than what my wife's iPhone is seeing on the nxtgenphone APN. Anyone got any tips?
I'm running Viper 2.5, latest US unlocked firmware and US unlocked selected as carrier, and it works fine on AT&T other than this......only other thing I can mention is when I select preferred band or whatever it shows WCDMA/GSM and if I change it to WCDMA/GSM/LTE it reverts back for some reason. Any help much appreciated. I've called AT&T and they're like, uh, we don't sell the HTC 10 so can't really help you... grrrrrr.....
vettejock99 said:
So I jumped on the AT&T/DirecTV Unlimited data deal and ported my phone today. It all looked normal and I got the activation texts and such - it even populated the nxtgenphone APN info (though it was deselected and I had to select it). Anyway, I've had no data at all. As a test, I switched the APN to phone and data works, but the speeds appear to be much lower than what my wife's iPhone is seeing on the nxtgenphone APN. Anyone got any tips?
I'm running Viper 2.5, latest US unlocked firmware and US unlocked selected as carrier, and it works fine on AT&T other than this......only other thing I can mention is when I select preferred band or whatever it shows WCDMA/GSM and if I change it to WCDMA/GSM/LTE it reverts back for some reason. Any help much appreciated. I've called AT&T and they're like, uh, we don't sell the HTC 10 so can't really help you... grrrrrr.....
Click to expand...
Click to collapse
I'd suggest ruu to stock us unlocked rom and see if the issue persists.
Or, try clean flash of viper.
I have no issues using US unlocked on AT&T with both stock rom and ice.
Thanks for trying to help. I just finished trying stock RUU and same problem. I'm convinced, as I was before, that this is AT&T's issue. I've read numerous posts this afternoon that because the HTC 10 (and other phones) aren't in their "LTE approved" database, nxtgenphone APN won't work, or it will only give HSPA speeds. Seems like everyone who has resolved it, or didn't run into the issue at all had another AT&T LTE phone they could use for the IMEI on the account, or the rep entered the model as an iPhone or similar to make it work. Really, really frustrating, as they refuse to help me and I'm starting to think I should just terminate in the 14 day window and do T-mobile or Verizon.
I have at&t and everything worked out of the box, I've never been on stock rom, always on Viper I did the unlock and s-off without a sim and never had an issue or called at&t to activate the device I just transferred my sim from my note 4 to the HTC 10, no provisioning issues at all, VOLTE works, LTE is fine as well while on a phone call... No issues... If you need anything to compare let me know
Sent from my htc_pmewl using XDA Labs
jocarog said:
I have at&t and everything worked out of the box, I've never been on stock rom, always on Viper I did the unlock and s-off without a sim and never had an issue or called at&t to activate the device I just transferred my sim from my note 4 to the HTC 10, no provisioning issues at all, VOLTE works, LTE is fine as well while on a phone call... No issues... If you need anything to compare let me know
Sent from my htc_pmewl using XDA Labs
Click to expand...
Click to collapse
Thanks for replying. They did confirm it was a provisioning issue and they fixed it today. They had to do something different, as the default HTC 10 provisioning and IMEI check didn't fix it even when they tried it a second time, but they were able to adjust something and LTE definitely works now. VoLTE working here, too. Thanks!

At&t on a3000 issue

I've been having issues with calling, such as when I go to call someone, sometimes they can't hear me, but I can hear them, and other times, I can't hear them but they can hear me. I notice I switch from lte or lte+ to h or h+, mostly h+. Could that be the problem? Could it be not selecting the right wcdma or umts band? Im at a loss to solve this problem. I've tried changing and modifying apns and preferred bands, in the hidden menu and in the sim card menu. I've also tried both stock and custom roms. Anyone else have this issue? I'm currently using rr remix nougat rom.
EDIT: I found out something interesting. I tried throwing my phone in 3g and making a call and it worked with no problem, surprisingly it didn't freeze the phone dialer. Will do more tests.
EDIT 2: OK, after attempt after attempt, I completely wiped the phone, like formatted EVERYTHING, multiple times/changed file systems back and fourth, then adb side loaded oxygen os with stock recovery. And after the phone booted, I noticed a sound issue, but I flashed a stock audio zip. Then.... Walla no issues, radio is more smooth, calls now work when received or made, the switch from lte or lte+ to h or h+ is now smooth asf. I will post again if to have problems.
i experience the same thing, it changing to h+ is normal b/c att does not have LTE over voice, so it will automatically goto h+ when making a call. It could be a number of things, it could be ur coverage location or it could just be a bug in the phone or just att, I work at att so i know its not perfect, i always seemed to have more issues with custom roms though
I haven't noticed it being better or worse on stock or custom roms, thanks for your imput though.
Something to try would be to get a prepaid sim from another carrier and drop it into sim 2. Do some test calls from the alt carrier and see if the same problem exists. If it does then it's possibly a hardware issue. If the issue seems to to clear up on the alt carrier then it's possibly AT&T.
I've heard others say its at&t, and even the store people said its a known issue with the one plus 3 and other unlocked phones

Problem 4G+ Galaxy note 10+ (SM-N975F)

Hello everyone, first of all I would like to apologize because I am French and I don't speak English very well, but I think you are my last hope for the trouble I am currently experiencing.
I own a Samsung Galaxy Note 10+ (SM-N975F) with a Rom Surcouche Operator Bouygues Telecom :
- N975FXXU4CTE9/N975FBOG4CTE9/N975FXXU4CTE9
I wanted to remove my Bouygues Telecom Rom Operator to install a Samsung Rom Stock without any overlayer operator. The operation is well finished so I am now on the Samsung Rom Stock:
- N975FXXS6DTI5/N975FOXM6DDTH7/N975FXXS6DTI5
Except that since this change of Rom I have almost no more 4G+ where I live knowing that before I was always in 4G+ So I would like to know why just by having changed the Rom I lost my 4G+. ( Worries which lasts since September 21st, 2020 ) I wanted to go back but I passed from a bootloader 4 to a bootloader 6
Knowing that I'm with the Free operator, I tested my Free SIM card in my wife's Samsung, I'm getting 4G+ so the problem is not my SIM card, I also sent my phone to Samsung, the phone has no hardware anomaly so it's from the change of Rom, I tried to reinstall the same problem, I also made the wipe I tried everything ...
I also have at home a 4G+ router with a 4G+ plan with the operator Free and I am in 4G+ at full speed ...
I hope to get some help from you because on the French forums I don't have a single answer ... Thanks in advance for your help and sorry again for my english
Test the internet speed on both phones using your sim's data plan with speedtest. If the speed is the same in both then the problem of the 4G indicator is only aesthetic.
Hello bigcalvin, unfortunately I have tested but the speed is not the same at all in 4G+ I go up to 235Mb/s while in H+ I go up to 3Mb/s so there is no problem with the 4G indicator
thominekevin76000 said:
Hello bigcalvin, unfortunately I have tested but the speed is not the same at all in 4G+ I go up to 235Mb/s while in H+ I go up to 3Mb/s so there is no problem with the 4G indicator
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Click to collapse
Have you tried in different areas? What it seems like, is that the stock Samsung ROM is not compatible with your carrier. With system on a chip (SoC), carriers can turn off bands that they don't need, or as a means of locking you into their network.
Sent from my SM-N976V using Tapatalk
Honestly I'm not going to lie to you I've tried everything I've tried a Bouygues télécom rom (bog) a SFR rom (sfr) a France télécom rom (ftm) and a Samsung stock France rom (xef) with my old Bouygues télécom rom (bog) bootloader 4 I always get the 4G+ since I changed my rom and I switched to bootloader 6 I never get the 4G/4G+ again and I sometimes get the 4G+ logos but there are 10 seconds left and then switch to the H+. ..
Hello, sorry for the double post but I don't know where to find help you wouldn't have a solution to my problem? Thanks in advance
I don't understand anything anymore on this phone knowing that my wife and at free and I can receive the 4g very well. I have a 4g router, I can receive the 4g free and my phone since the update doesn't receive anything anymore, I have to go out of my house and walk a good 100 meters to hope to receive the 4g whereas I didn't have this problem before I made the really strange update...
No one would have a solution to give me or manipulation to do I take all the information.
Try a "reset network settings" if you haven't already.
Clear the system cache on the boot menu; it never hurts to do so.
Hi, thank you for your answer unfortunately I have already reset the network settings I have also done the factory settings system cache also reinstallation of a new rom I had to do it about twenty times but still nothing :/
thominekevin76000 said:
Hi, thank you for your answer unfortunately I have already reset the network settings I have also done the factory settings system cache also reinstallation of a new rom I had to do it about twenty times but still nothing :/
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Yeah pretty basic stuff... that's all I got
Most likely a settings issue but you probably know more than myself at this point to troubleshoot this problem.
Try doing Google searches and view the results for other Samsung phone models and years.
Most times I can find a solution like this or trip over it as an indirect result while searching.
Some of the Samsung software issues have been around for years...
I've already searched everything on google I'm French I've searched on English forums and everything but I can't find anything at all.
I am in France with the mobile operator "Free" which uses the frequencies 700mhz/1800mhz/2600mhz I would like to know if there is a possibility on this phone to choose the frequency that I want one by one I have the impression that it is my 700mhz frequency that has a problem on my phone :/
By using the free App 'Shortcut Master (Lite) from Google Play, you can get access to the Network Settings. In there you can make Band Selection, allowing you to test network connections and performance per band (=frequency) or combinations of bands.
See following thread: https://forum.xda-developers.com/ga...guide-hidden-network-settings-exynos-t3995501
Hope this helps!
Hello OnnoJ, unfortunately I have already tested with this application so it doesn't work. However I compared everything with my wife's phone a Samsung so I have exactly the same settings as on her phone ...
I have to go out of my house and walk a good 200 meters to hope to get 4G, however I specify that before I made this famous update I was always in 4G at home inside and outside of the house and this is not a concern of the mobile operator because otherwise my wife would have exactly the same problem as I have now and I would also have exactly the same problem on my 4G router ...
I think I've done everything and above all I've tested everything and unfortunately I had Samsung on the phone and they put the blame on the operator whereas as explained above my 4G router and my wife's phone have exactly the same mobile operator so they would have the same problem as me ... ...
I would try to revert to the newest firmware that your carrier uses, just to see if the issue is about the bands, search for the latest firm for your carrier, provided that it is of an equal or higher bootloader version to the one you currently have installed, that is what I would do
@thominekevin76000.
Not saying it may help you, but the application works fine for me to access network settings. I use it all the time, as it helps me at home and at work to make the optimum band selection for that specific location to prevent hopping between different cell towers and to have a stable and fastest possible 4G+ connection. CellMapper app allows me to see connection possibilities with the various cell towers and their power.
Hello winol, I can't go back to my old Rom because I had a bootloader of 4 and now I switched to a bootloader of 6 so I can't go back :/)

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