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.
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rdoac said:
but if you don't touch the radios
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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.
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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?
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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.
Related
Greetings everyone! I'm a long-time lurker on this site, but have a bizarre problem that I need help with. I've searched all over, and haven't found anyone with this issue. Hopefully someone here can help! Ok, here it goes.
I purchased a used AT&T Galaxy S3, unlocked it, and put it on a T-Mobile prepaid plan. Everything works properly (calls, texts, data, etc.). But when I get to work I have the problem. While I'm in my building, the phone will show full bars for service, but it tells me it's not connected to any network when I try to do anything. If I try to make a call, it says for emergency calls only. Basically it acts the same as if the bill hadn't been paid, so they suspend your service while the phone still shows a signal. As soon as I leave the building, everything comes back as normal.
At first I was thinking the building was a dead zone, but it doesn't add up. Everyone else at work is always on their cell phones walking all around, and I've asked around to see if anyone else had these problems. Everyone says they have no reception issues at all, coming from people on various networks. Also, if it were a dead zone, I wouldn't think it'd be showing fluctuating signal bars. So I'm stumped, and desperately need to figure this out. Any ideas?
Tried a different modem?
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lonz358 said:
Tried a different modem?
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I tried three different modems this morning. No luck. Anyone have any other ideas?
damdlux said:
I tried three different modems this morning. No luck. Anyone have any other ideas?
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Flash a T-mobile ROM ? Since it's unlocked why not flash a stock or close to stock T-mobile ROM. A conflict of some sorts there
hednik said:
Flash a T-mobile ROM ? Since it's unlocked why not flash a stock or close to stock T-mobile ROM. A conflict of some sorts there
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Would I be able to get a stock T-mobile rom without having to downgrade from 4.1? The only one I could find was for 4.0.4.
damdlux said:
Would I be able to get a stock T-mobile rom without having to downgrade from 4.1? The only one I could find was for 4.0.4.
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http://forum.xda-developers.com/showthread.php?t=1949687
UVDLJA I believe it is is the t mobile stock one with root injected you can flash with odin
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Ok, so an update on this situation. I flashed the T-Mobile stock firmware via Odin as suggested. I tried that with a combination of different modems, and nothing worked. I finally caved and bought a T-Mobile S3 T999, which arrived last night. On my way to work I had 4G just about the whole way, seemingly great service. As soon as I got inside, the problem was back. Five bars, no service (now saying not registered on network). I'm starting to wonder if it's the fault of the S3 in general having poor signal quality, or if it's T-Mobile service. I'm hoping maybe someone else has some new ideas to try out, or suggestions on if I should get a different phone or network.
damdlux said:
Ok, so an update on this situation. I flashed the T-Mobile stock firmware via Odin as suggested. I tried that with a combination of different modems, and nothing worked. I finally caved and bought a T-Mobile S3 T999, which arrived last night. On my way to work I had 4G just about the whole way, seemingly great service. As soon as I got inside, the problem was back. Five bars, no service (now saying not registered on network). I'm starting to wonder if it's the fault of the S3 in general having poor signal quality, or if it's T-Mobile service. I'm hoping maybe someone else has some new ideas to try out, or suggestions on if I should get a different phone or network.
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Try this: http://forum.xda-developers.com/showpost.php?p=36801042&postcount=4
Dunno if it's gonna work but can't hurt to try.
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.
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Mine stays on G.. how to enable 4g,?
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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.
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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.
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You tried with success?
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MandoH said:
You tried with success?
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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.
First of all i wanna say, you all do an amazing job with all of this. So ive been looking around the forums and i cant find an answer to my question, so i will post and wait for replay. i have the at&t version (i747) of the gs3 and had updated to 4.1.1 via kies. early march i found a post on your forums about sim/carrier unlocking and tried it out. it worked w/o any problems, so i headed to t-mobile to jump on their monthly unlimited 4g plan. installed sim and had no problems. all functions work: calls, im, sms, mms, data (edge, 3g, and HSPA+), everything. on march 17th, i decided to try out a custom rom. i odin rooted my phone with cwm then tried out [ROM][4.2.2][STABLE] LiquidSmooth v2.1 - d2att - 3|16|13. works absolutely fine. sorry for the long wind but i just want to make sure i give all info before posting my question as i may prevent unness replies. having an at&t phone using tmobile as the carrier, can i use roms intended for t-mobile only, or do i have to stick to at&t/multi-carrier roms only?
Honestly making sure you have a T-Mobile put in is all that matters. Other than that they are fairly interchangeable.
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hednik said:
Honestly making sure you have a T-Mobile put in is all that matters. Other than that they are fairly interchangeable.
Sent from my SAMSUNG-SGH-I747 using xda premium
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I have been making roms, from Canada claro i747m, and tmobile t999 and att 747 and they all work as they should. no problems at all, using stock att modem i747ucdlk3 without any issues...
all I did was change the build prop to represent d2att..
I have simplemobile which is a tmobile company.. except for now I just used up my 4g.. I usually get 3g, but for some reason im getting an E which speed is like 2g edge.. slow at the moment.. never seen that in 3 months..
check my signature, for my roms... they r all stock original roms..
I'm in the same situation as the op. I have at&t i747 unlocked to use with tmobile. My question is, if I flash a multi-rom What carrier do I choose during the aroma install? do I pick tmobile because thats what network im using now or do I pick at&t because its originally an at&t device? any help or advice would be greatly aprecciated.
during the install of liquidsmooth i chose att since i do have the branded phone. i cant use the lte settings for network cause tmob doesnt have their lte out yet (soon to drop), but i am wanting to try the tmobile install and see if i get any difference in data speeds. other than that, liquidsmooth is a pretty solid build. this is the only rom i have tried on my gs3 so far. id like to try others to maybe help give feedback for builders, i just wasnt sure if i could use tmobile or had to stick to att roms. thanks for the info.
on a side note, the rom unlocked a 1080p video record and i like showing ppl the OC ability. 1.9Ghz. YAY!!!
when I first made my Canada Claro rom d2can everything worked out the box. the only thing was it was showing me info of I747m, everything was still working, same when I made my tmobile rom, it was showing d2tmo, everything worked out the box, just that it showed me info of T999, so both of the roms worked, all I did was change the build prop to represent d2att ATT info..
So the answer is yes, u can use other roms... just be careful not to install the modem. I never changed that. I remove them from the rom.
Danger,, I tried making the international GT I9300 and removed the modem, changed the build prop.. almost bricked my phone, played with it to try to make it work, It would hang and sometimes not boot up... so stay away from international one.
so if u try Canada or tmobile u should be safe, its the same phones... or if someone post roms that are ported to att i747.
I am using i747 for T-Mobile.
Can somebody tell me what ROM i should use in order to get WIFI Calling on it ?
Thank you.
Just like the headers says,
I unlocked my tmobile phone a few days ago, I had to downgrade from 4.1.2 to 4.1.1 in order to do so. Problem is that although it shows att on my lock screen, when i try to upgrade back to 4.1.2 it tries to go to tmobile's servers instead of going to att and upgrading to their software. I also get an invalid sim error when i turn on wifi calling and i have no 4GLTE....just 4G. I setup and saved a couple of APN's but it still tries to upgrade from tmobile. Texting and MMS work good and i have tried all of the standard settings on the phone with no luck as well. Am i correct in guessing that it is not the hardware but instead is the software trying to phone back to tmobile. I want a simple factory image from att,BUT my phone is an 889 and i am not sure what image to flash to it. It is also at the moment rooted but if it unroots after the flash i will just re-root it afterwards.
What i am hoping for is that if i get att's software on it ,it will upgrade from att.
Thanks.
Sounds of your trying to upgrade from the phone it self. don't
Dude just flash a stock Rom, clean Rom is what most use. You'll find it in the development section. That way you don't have all the bloat that AT&T adds in the firmware.. JUST make sure it has no modem, cuz that you don't want to do!!.
You don't want to flash a AT&T modem on a T-Mobile GN2. Would just give you boot loops..
Your IN the same boat my buddy was in. He has the same phone you do. So I flashed a AT&T custom Rom on his phone after the unlock process. Then after a few days told him to upgrade back to the newest modem from TMO.
As a side note I changed his model in his build prop to a I317. Just too c what would happen. But lo and behold I had his phone next to mine the other day. LTE area, checked mine and his we're both on AT&T LTE network. LTE 14
Oh yeah let me state that I did no AWS bands unlocking thing. Was just kinda amazed that he was getting LTE from att, on a TMO GN2.
Just my 2¢®
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Bajanman said:
Sounds of your trying to upgrade from the phone it self. don't
Dude just flash a stock Rom, clean Rom is what most use. You'll find it in the development section. That way you don't have all the bloat that AT&T adds in the firmware.. JUST make sure it has no modem, cuz that you don't want to do!!.
You don't want to flash a AT&T modem on a T-Mobile GN2. Would just give you boot loops..
Your IN the same boat my buddy was in. He has the same phone you do. So I flashed a AT&T custom Rom on his phone after the unlock process. Then after a few days told him to upgrade back to the newest modem from TMO.
As a side note I changed his model in his build prop to a I317. Just too c what would happen. But lo and behold I had his phone next to mine the other day. LTE area, checked mine and his we're both on AT&T LTE network. LTE 14
Oh yeah let me state that I did no AWS bands unlocking thing. Was just kinda amazed that he was getting LTE from att, on a TMO GN2.
Just my 2¢®
Sent from my SAMSUNG-SGH-I317 using Xparent SkyBlue Tapatalk 2
Click to expand...
Click to collapse
Thanks for the info.
I understand the what but not the how....if that makes sense. There are some things i like that come stock like s pen...etc. But with all of the acronyms, i am kind of lost.
Ghostnotes1221 said:
Thanks for the info.
I understand the what but not the how....if that makes sense. There are some things i like that come stock like s pen...etc. But with all of the acronyms, i am kind of lost.
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Click to collapse
I am still on the fence on how about going to do this. If someone can point me to the proper files(that's my biggest problem) I think i can do the rest.
Thanks.
http://forum.xda-developers.com/showthread.php?t=1986893
This is what you want to install.
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Hello all,
I have an international version Note II (GT-N7100). I am on T-Mobile in an area where most of the towers now use the 1900mHz band. I'm wandering if I can flash a T-Mobile branded ROM to get the use of Wifi Calling, which I've cherished the ability to have (sometimes with hacked apks and libs), on previous phones. Would flashing one of these ROMs work well with my version of the phone? Or if even better, is there a package I can get like THIS that will push the wifi calling to my phone?
If it is workable for me to flash one of these ROMs, should I be flashing a radio as well? Or any other tips to make this conversion work out?
Do not flash an LTE Note 2 modem on the non-LTE version, they have different hardware. I know there were some porting guides to modify ROMs to go from one to the other, so this won't be a straight-forward flash.
You should be able to flash t-mobile roms and get the Wi-Fi calling feature.
I am using it on my AT & T note 2 and Wi-Fi calling is working flawlessly.
Try Tweaked ROM from T mobile note 2 section and make sure you keep your existing RADIO/Modem.
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Thank you both for the replies. I will try to get one working. Had some issues for a couple days recovering from trying Android 4.3... lol I like to experiment.
Curious as well
I bought this international version as well I live in the states and have been using it with att but now I'm about to switch to tmobile. I have rooted the phone but I am curious if I can flash it with a stock tmobile version of firmware (where ever that is) and use it with our services here. I understand Ill need to reset the counter and all that crap too. I have experience with rooting and installing CFW's but having a tmobile stock firmware that will accomplish things like wifi calling and ota updates would be very beneficial at least until that final firmware update is released then I will probably root it again.. real shame they wont let you OTA update just for a simple root but then again I guess with warranties and law suits and the chance of screwing up your possible custom firmware maybe its a good thing. Anyways point me in the right direction HAHA. The phone is amazing so far and works flawlessly with the towers here. Thanks. I checked the tweaked firmware for tmobile seems like it might work like you said but Im extra cautious at times and so I would like to know If what i stated above will work ok or not ???? Its not a huge deal if i cant have ota updates but yeah I would def like to have wifi calling and maybe some of tmobiles other things but yeah Looking forward to some advice
Same issue here
DemonLoader said:
Thank you both for the replies. I will try to get one working. Had some issues for a couple days recovering from trying Android 4.3... lol I like to experiment.
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Were you able to get the software on your N7100? I am curious as I would like to know how to get it done as well. thanks in advance.