Develop Bugs

AT&T Service Shutting off constantly, not sure how to fix it.

To keep things short, I'm a noob to most of the phone things. I have a HTC Google (T-mobile) G2 which is unlocked and has an AT&T Sim card. Right now it's running the Virtuous Quattro RC3 ROM. I did a full wipe of the phone and the ROM has been working great (despite the camera problems), but I noticed the phone would disconnect from the AT&T service every 10 mins or so. After using the phone all day I realized that everytime I unlock the phone, the phone disconnects from the service for about 1 min and then re-connects along with random times while I'm using the phone. I didn't have this problem with the last ROM (Virtuous Unity). But I know it's a problem with the phone because my house has perfect reception and I have never had a connection problem in the house. However, I do not know what could cause this problem and not sure if it is the Radio since I have read about alot of people talking about that. I have no idea what radio I'm using now and have no idea how to find it.
In addition, the phone cannot recognize my phone number in the settings and requires me to program the voicemail number (which of course I cannot figure out). Both of these were automatically recognized by my previous Virtuous Unity ROM.
Anyway, if someone could tell me what is causing this connection issue on my phone and how to fix it, I would be sooo grateful!
Please let me know if you need more information.

Use a T-Mobile SIM card.

blackknightavalon said:
Use a T-Mobile SIM card.
Click to expand...
Click to collapse
That seems to be the easiest solution, but I have been using this unlocked phone with AT&T service for a month now and can't change service providers at the moment. Since I know the phone can work with AT&T I would rather try to find a solution to this problem.

nds623 said:
That seems to be the easiest solution, but I have been using this unlocked phone with AT&T service for a month now and can't change service providers at the moment. Since I know the phone can work with AT&T I would rather try to find a solution to this problem.
Click to expand...
Click to collapse
Have you tried your AT&T SIM card in an AT&T phone?

blackknightavalon said:
Have you tried your AT&T SIM card in an AT&T phone?
Click to expand...
Click to collapse
I just did and it works perfectly in an AT&T phone and an Unlocked Nokia phone.

Try a different ROM.

Thanks for the advice. I started downloading the Affinity ROM to fix the problem. Just really liked the interface for the Quattro, but the camera bugs are annoying anyway.

you do realize with a tmobile branded g2 you won't have the proper cellular bands for high speed data? also you will need to change the apn to get things working. but yes changing radios may solve the dropped service I just couldn't tell you what radio works best, maybe test a few out... but as always be extra careful when playing with firmware
Sent from my HTC Vision using xda premium

demkantor said:
you do realize with a tmobile branded g2 you won't have the proper cellular bands for high speed data? also you will need to change the apn to get things working. but yes changing radios may solve the dropped service I just couldn't tell you what radio works best, maybe test a few out... but as always be extra careful when playing with firmware
Sent from my HTC Vision using xda premium
Click to expand...
Click to collapse
I got this phone from a friend when I badly needed a phone, but now that I can invest in a new phone, would any non-AT&T phones allow me to have high speed data? I don't want to pay for the smartphone plans, so I need something that is unlocked to stay on the cheaper plan.
I have tried to do some research on radios before and was having a hard time, but I will look again since I like the Quattro ROM much more than any of the other ROMs I've tried.

some will work some won't, try a wesite called gsm arena, this will give you phone specific radio bands
Sent from my HTC Vision using xda premium

[Q] Switched to T-Mobile with constant 4g to E switching. Can I flash a new Modem?

I eventually unlocked my AT&T SGS3 and switched to T-Mobile with a friend. I noticed often times i'll be in the same spot, and my phone with go from 4g to E in a matter of seconds, then keeps switching back and forth. My friend who switched with me has the Galaxy Note 2 from AT&T and we'll be in the same car and his phone will be on 4g, while i'll be stuck on Edge with no internet. I'm wondering if I flashed my modem to something else, if I were to get better reception. Or perhaps a newer ROM with better T-Mobile radios? I'm running the newest Cyanogen with the I747UCDLK3 Modem. I would appreciate any help! Thanks.

OldJon said:
I eventually unlocked my AT&T SGS3 and switched to T-Mobile with a friend. I noticed often times i'll be in the same spot, and my phone with go from 4g to E in a matter of seconds, then keeps switching back and forth. My friend who switched with me has the Galaxy Note 2 from AT&T and we'll be in the same car and his phone will be on 4g, while i'll be stuck on Edge with no internet. I'm wondering if I flashed my modem to something else, if I were to get better reception. Or perhaps a newer ROM with better T-Mobile radios? I'm running the newest Cyanogen with the I747UCDLK3 Modem. I would appreciate any help! Thanks.
Click to expand...
Click to collapse
Mine stays on G.. how to enable 4g,?
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

OldJon said:
I eventually unlocked my AT&T SGS3 and switched to T-Mobile with a friend. I noticed often times i'll be in the same spot, and my phone with go from 4g to E in a matter of seconds, then keeps switching back and forth. My friend who switched with me has the Galaxy Note 2 from AT&T and we'll be in the same car and his phone will be on 4g, while i'll be stuck on Edge with no internet. I'm wondering if I flashed my modem to something else, if I were to get better reception. Or perhaps a newer ROM with better T-Mobile radios? I'm running the newest Cyanogen with the I747UCDLK3 Modem. I would appreciate any help! Thanks.
Click to expand...
Click to collapse
You can try different modems for your carrier (start with latest). There's a modem sticky thread.
One thing though, T-mobile is known to have bad 4G coverage and they're currently upgrading their towers so if your phone connects to a tower that doesn't have 4G yet, you connection will drop.

BWolf56 said:
You can try different modems for your carrier (start with latest). There's a modem sticky thread.
One thing though, T-mobile is known to have bad 4G coverage and they're currently upgrading their towers so if your phone connects to a tower that doesn't have 4G yet, you connection will drop.
Click to expand...
Click to collapse
You tried with success?
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

MandoH said:
You tried with success?
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
I do change my modem whenever there's a update to try it. Usually with better results than the last one.
I'm with Rogers though, so can't try it for T-Mobile. It's something to test as I can't know which one will work best in your area and on your device.

Unexplained weak signal and poor reception on an unlocked i317m, please help!

Hi all, this is my first time posting in these forums.
I've recently purchased a used rogers model i317m galaxy note 2 and used the dialer code so I could use it on Telus.
Since doing so, I have experienced intermittent, unexplainable signal drops, especially going into indoor areas. I have a friend with the same model phone, but Telus stock, and we have compared signal strength over the last two weeks. In a friends basement, he gets full reception on his note 2, while I get nothing.
In dealing with this issue, I have perused these forums for weeks. A variety of threads in the various note 2 forums all point to something fishy going on with galaxy note 2's that have been unlocked with the dialer code, and no conclusive evidence or answers regarding what the problem is, or how it can be fixed. It seems like those threads simply die because people cannot provide an explanation.
I have taken the phone to multiple repair shops, but their answers were all varying and they were more interested in trying to sell me on replacing the main board for $300 than helping me (no idea if it would actually fix anything if it's software related). I originally thought it could be a hardware antenna issue, but looking online and inquiring at the shops, antenna problems are so rare they don't even have stock, and have never been asked to replace one.
I doubt it's a hardware problem, and the other loose threads regarding this issue seem to confirm that it is software related, and only happens to dialer unlocked note 2's. And since I am getting reception (3bars and let outside, 1 bar and no data inside), the antennas do seem to be working.
ive tried a variety of solutions suggested on* the forums, but to no avail.
1) factory reset, no results
2) new sim card, no results
3) flashing a stock Telus rom, changing csc code, nothing
4) flashing new telus radio (even though I know rogers, Telus, sasktel all use the same radio), nothing
5) flashing aws band, made reception worse (maybe)
6) using *#*#2236# code, changing options, nothing
7) calling Telus, explaining the situation, having them make sure everything was fine on their side. Everything checked out and the Telus guy was equally confused by the problem.
8) main Samsung tech support, same issue. The representative was confused as well, and started cruising xda to try to help me!
This has been incredibly frustrating. The signal drop is so bad it basically renders the phone unusable. Right now I'm sitting in a house on the main floor on wifi next to big windows, and I'm getting one bar of reception and no data at all. On my nexus in the same room I was getting full signal.
The only thing I haven't tried is flashing modded baseband radios, but another person with the same problem on xda tried that and it didn't work for them at all.
I think I'm out of options. Planning on selling it to a used store for cheap and buying one fresh from Telus, or ordering an international model so this won't happen again.
Can anyone help?
Thanks so much.
WTF, W. T. F.
Sent from my SGH-I317M using xda app-developers app

I had the same problem, reset flash counter to zero and returned it to Samsung for warranty. They fixed it for me. I am on my phone now so i can't link to the thread, but if you Google reset flash counter to zero gn2 xda, you should find the answer. Hope this helps.
Sent from my SGH-I317M using xda app-developers app

Thanks. Was it confirmed to be a hardware problem? Will they accept used phones under warranty?
Sent from my SGH-I317M using xda app-developers app

Try flashing this rom and flash your modem/radio before you reboot system. I am using it right now and my signal increased with this stock rom. I am using Ma3 modem with it and works great.
http://forum.xda-developers.com/showthread.php?t=2301141
Sent from my l317M

Yes, they told me it hard ware, and yes, it was used and still under warranty. Try contacting Samsung through online chat via their help center.
Sent from my SGH-I317M using xda app-developers app

AIDAKU said:
What is that *#*#2236# code?
Sent from my SAMSUNG-SGH-I317
Click to expand...
Click to collapse
It's a hidden menu, that's within the phone. Same way you unlock it by using the hidden menu!
Just my 2¢®
Sent from my SAMSUNG-SGH-I317 using Tapatalk 4 Beta

eltee38 said:
Hi all, this is my first time posting in these forums.
I've recently purchased a used rogers model i317m galaxy note 2 and used the dialer code so I could use it on Telus.
Since doing so, I have experienced intermittent, unexplainable signal drops, especially going into indoor areas. I have a friend with the same model phone, but Telus stock, and we have compared signal strength over the last two weeks. In a friends basement, he gets full reception on his note 2, while I get nothing.
In dealing with this issue, I have perused these forums for weeks. A variety of threads in the various note 2 forums all point to something fishy going on with galaxy note 2's that have been unlocked with the dialer code, and no conclusive evidence or answers regarding what the problem is, or how it can be fixed. It seems like those threads simply die because people cannot provide an explanation.
I have taken the phone to multiple repair shops, but their answers were all varying and they were more interested in trying to sell me on replacing the main board for $300 than helping me (no idea if it would actually fix anything if it's software related). I originally thought it could be a hardware antenna issue, but looking online and inquiring at the shops, antenna problems are so rare they don't even have stock, and have never been asked to replace one.
I doubt it's a hardware problem, and the other loose threads regarding this issue seem to confirm that it is software related, and only happens to dialer unlocked note 2's. And since I am getting reception (3bars and let outside, 1 bar and no data inside), the antennas do seem to be working.
ive tried a variety of solutions suggested on* the forums, but to no avail.
1) factory reset, no results
2) new sim card, no results
3) flashing a stock Telus rom, changing csc code, nothing
4) flashing new telus radio (even though I know rogers, Telus, sasktel all use the same radio), nothing
5) flashing aws band, made reception worse (maybe)
6) using *#*#2236# code, changing options, nothing
7) calling Telus, explaining the situation, having them make sure everything was fine on their side. Everything checked out and the Telus guy was equally confused by the problem.
8) main Samsung tech support, same issue. The representative was confused as well, and started cruising xda to try to help me!
This has been incredibly frustrating. The signal drop is so bad it basically renders the phone unusable. Right now I'm sitting in a house on the main floor on wifi next to big windows, and I'm getting one bar of reception and no data at all. On my nexus in the same room I was getting full signal.
The only thing I haven't tried is flashing modded baseband radios, but another person with the same problem on xda tried that and it didn't work for them at all.
I think I'm out of options. Planning on selling it to a used store for cheap and buying one fresh from Telus, or ordering an international model so this won't happen again.
Can anyone help?
Thanks so much.
WTF, W. T. F.
Sent from my SGH-I317M using xda app-developers app
Click to expand...
Click to collapse
Did you fix this. I have the same problem,

I am having the same problem, how did you get this fixed? Does anyone else have a suggestion?

i'm having the same issue, any luck resolving this problem??

Note 2 bad reception after root and rom 4.4.2
whhw31 said:
i'm having the same issue, any luck resolving this problem??
Click to expand...
Click to collapse
I was having the same problem on my Note 2 i317 and seem to have fixed it with the latest modem i317UCAMH3. It still fluxuates, but now I get a full 5 bars of reception and it lasts much longer. I also downloaded an app call OpenSignal, that seems to help...cannot image exactly why, but when I get low reception, I open this app and watch it jump to at least 2 bars and then I can make a call again (this was before flashing the newer modem), now I just use the app for visual purposes, as the Beanstalk image for reception is hard to see, OpenSignal has nice big green bars that are easy to see. Try the new modem and give it at least 15 minutes to connect, then it seems to stay connected for me...except when it locks and goes to sleep...it still loses reception when that happens, but that is an issue for another day.
Cheers!

[Q] Stopped getting 4G after CM flash

i unlocked a sgh-i747 sgs3 for use on tmobile. when i was stock, i could get 4G and Edge only. After a suggestion, i updated my phone and it connected to all manner of 4G and HSPA networks.
i decided that i wasnt happy with the ROM and upgraded to CM 10.1.2-d2att by means of CWM v6.0.3.1.
after getting this happily flashed, i loaded CM and am now stuck in 3g.
any ideas???

I may be wrong, so don't try it without confirmation, but if you don't touch the radios, don't you need the t-mobile roms rather than the at&t ones? I suspect the problem using an at&t Rom is your apn's are messed up. Also check the order your networks try.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 4

rdoac said:
but if you don't touch the radios
Click to expand...
Click to collapse
can you elaborate on this? i know what a radio is, but i don't know if i follow you. as someone pretty new to all this, i feel that i did mess with the radio in order to get the AT&T phone, before i installed CM, to connect properly to the 3G signals.

In recovery you can flash modems and baseband. These are specific to the hardware in your phone. You should only flash ones specific to your model number. However the Roms are basically the same between different versions of the phone but with minor changes (at least between t mobile and at&t). There was a thread around explaining how to use a t mobile Rom on an at&t phone.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 4

i tried to straight flash the tmobile rom and the little android guy died
rofl
meh... im in a bad place. i can't flash the CM i want because apparently the bootloader that fixes the 3G issue for me is based on ICS. if i update the bootloader so i can get the good CM, i guess i lose the fix... right now, i've reverted to the touchwiz that comes with the fix i talked about in my OP and 4G works properly again.
rock and a hard place.

Am glad you got something working. Can you sell that gs3 and get the T Mob version? If it were me, I'd probably stick with a touch wiz version for a while.
I'll try and read up some tomorrow.
Sent from my Nexus 7 using Tapatalk 4

rdoac said:
Can you sell that gs3 and get the T Mob version?
Click to expand...
Click to collapse
heh, i just bought it. got it this morning from the post office! it was the cheapest one i could get given certain circumstances. you're right, it would be so much easier to just have the official tmobile version.
i have it back in CM now, but it's CM10.0.*. android 4.1 i think. and i'm getting HSPA+ with it. my biggest issue is that 3G fix... it sticks me on a ICS bootloader and that holds back the CM version from being anything 10.1.*. but at least i'm running CM now, even if it's not 4.2.

Lte on m919v 4.4.2

OK i have tried to find the answer to this question i have a S4 M919V ( Videotron/Wind) on 4.4.2 (M919VVLUFNB5) And I'm currently with virgin mobile (Bell) i have evething set up to receive LTE on the phone. the sim card is LTE ready but i have no way of getting the phone to receive it.
I've tried to go into setting ( phone dial *#2263#) of that but nothing worked.
I don't mind rooting my phone but would love to get LTE without having to sell my phone and buying another one

humonculi said:
OK i have tried to find the answer to this question i have a S4 M919V ( Videotron/Wind) on 4.4.2 (M919VVLUFNB5) And I'm currently with virgin mobile (Bell) i have evething set up to receive LTE on the phone. the sim card is LTE ready but i have no way of getting the phone to receive it.
I've tried to go into setting ( phone dial *#2263#) of that but nothing worked.
I don't mind rooting my phone but would love to get LTE without having to sell my phone and buying another one
Click to expand...
Click to collapse
have you tried the settings here?
Settings/More networks/mobile networks
Your Network mode should show LTE,WCDMA (auto connect)
if not, tap on the network mode and select the LTE/WCDMA (auto connect) option and back all the way out.
Turn on airplane mode for about 30 seconds and then turn it back off and see what your results are.
You need to be SURE that LTE reception is possible where you are trying this. After all, no matter how good your hearing is, you won't hear me talking if you're out of earshot, right? LOL
Good luck!

Yeah I've tried it and for some reason I don't have this option but your right about checking if the lte is available before doing anything

humonculi said:
Yeah I've tried it and for some reason I don't have this option but your right about checking if the lte is available before doing anything
Click to expand...
Click to collapse
Do you have any S5 apps installed?
If using a build prop mod you can lose your LTE settings in "networks".
Pp.
sent from my bluetooth controlled toaster that also takes pictures.

I have an unrooted galaxy s4 running on stock 4.4.2

humonculi said:
I have an unrooted galaxy s4 running on stock 4.4.2
Click to expand...
Click to collapse
Thats strange, this issue has been encountered with rooted phones running stock/custom roms while running some mods.
You may have to do a factory reset, or stop by a TMOBILE store and let them check it out.
Pp.
sent from my bluetooth controlled toaster that also takes pictures.

humonculi said:
OK i have tried to find the answer to this question i have a S4 M919V ( Videotron/Wind) on 4.4.2 (M919VVLUFNB5) And I'm currently with virgin mobile (Bell) i have evething set up to receive LTE on the phone. the sim card is LTE ready but i have no way of getting the phone to receive it.
I've tried to go into setting ( phone dial *#2263#) of that but nothing worked.
I don't mind rooting my phone but would love to get LTE without having to sell my phone and buying another one
Click to expand...
Click to collapse
Does that phone even support LTE?
PanchoPlanet said:
Thats strange, this issue has been encountered with rooted phones running stock/custom roms while running some mods.
You may have to do a factory reset, or stop by a TMOBILE store and let them check it out.
Pp.
sent from my bluetooth controlled toaster that also takes pictures.
Click to expand...
Click to collapse
They don't have T-Mobile, and its not a T-Mobile device
Sent from my SGH-M919 using Tapatalk

On 4.2, my friend, with the exact same phone was able to force lte. But cutting any phone line

humonculi said:
On 4.2, my friend, with the exact same phone was able to force lte. But cutting any phone line
Click to expand...
Click to collapse
Were they on the same network as you?
Sent from my SGH-M919 using Tapatalk

I don't know to be honest.
I got a legit lte sim car from virgin mobile because they offer lte and i've read that the t-mobile phone (m919) supports bell 's LTE frequencies

humonculi said:
I don't know to be honest.
I got a legit lte sim car from virgin mobile because the offer lte
Click to expand...
Click to collapse
Could be that it doesn't support LTE from your carrier.. I think it may be capable to support LTE but its disabled on that model.. I've seen people flash M919 modems and gotten LTE to work. Just make sure you do some research, and more research if you device to do this
Sent from my SGH-M919 using Tapatalk

I've been rooting my phone as if it was a normal t-mobile m919 but I tried searching for into to see it there was a way to simply make my V (m919V) disappear and solve all my problems but nothing yet I know you can but as far as warranty, brick and risks go I have not found much information regarding this issue and that why I started this post
I wanted to say thank you to everyone for your help and suggestions

OK I've done some research and it seem that the m919v has the lte hardware to run the frequency 700
( http://www.morecellphone.com/compar...vs-samsung-galaxy-s4-lte-gt-i9505-64gb/340724)
And that virgin mobile (bell's network)
(bell is one of the biggest telecommunications companies in canada)
has this frequency on their network
(http://en.m.wikipedia.org/wiki/List_of_LTE_networks)

The only thing is that the lte frequency off 700 was lunched in Ontario last month and I'm in Montreal
But the fact that t-mobile only has 1700 and that virgin uses this here means that the phone isn't the problem and with this information, i've concluded that it a software issue

serio22 said:
Were they on the same network as you?
Sent from my SGH-M919 using Tapatalk
Click to expand...
Click to collapse
So the question would be is There a way I can flash radio (baseband) without having everything getting messed up
And will i lose my data.
ive done a nandroid backup just in case. The phone is also rooted used T-Mobile files