Unlocked AT&T G6 on T-Mobile - AT&T Samsung Galaxy S6

Hey folks, just wanted to know if any of you are using your unlocked AT&T G6 on T-Mobile and what your experience is like.
Additionally, if you're rooted, would flashing a T-Mobile modem work on a stock but rooted AT&T rom? Would it enhance network performance?
Thanks!

i'm using it but not recommended. you need an at&t sim for ota software update, can't use wifi calling and i read that lte b12 is disabled.

Thanks..hopefully there's a way to unlock b12 in the future, if that's the case.

Can anyone confirm or deny band 12 usage from personal experience?

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[Q] I dont know which moto x to pick for straight talk

Hi everyone, I'm thinking about getting a moto x but I dont know which carrier version to pick.
I currently have a droid 4 on verizon and I'm looking to ditch verizon in favor of straight talk in june.
My issue is that they're having a sale on the moto maker site and I dont know weather to choose a Verizon one to use untill my plan stops or if I should get the T-Mobile or at&t version so it will work better with straight talk when the time comes to change.
Something to consider is that 1. T-Mobile has pretty spotty coverage in my area 2. I dont think the moto x can be activated as cdma for straight talk.
Some other questions I have are 1. will a T-Mobile version work just fine on at&t? 2. are there any reasons I should pick an at&t branded one? 3. Are there any reasons i shouldn't pick the verizon version?
thank you for your time
Correct me on this if needed, but all Verizon phones are sim unlocked and work with GSM per FCC agreement. So you could get that version, but I would check it first when receiving it to see if it work with a GSM sim, if not you can get an RMA for a refund. The Verizon edition have the 3G bands to work with ATT, it lacks T-Mobile AWS 3G band (1700). Also it only support LTE band 13, it doesn't support LTE bands 2, 4 or 17 that come with the GSM unlocked version, so you will not get LTE on ATT or T-Mobile.
There is zero reason to get the ATT version what so ever, none, zilch. It's sim locked (though you could ask ATT to unlock it I guess), cannot unlock bootloader. The T-Mobile version is actually the unlocked version, it support every bands required by ATT, both 3G and LTE. T-Mobile version have unlocked sim and bootloader, doesn't have carrier logo nor carrier bloatwares.
Then there is the unlocked GSM Developer Edition which allow you to unlock bootloader without losing warranty, is similar to regular T-Mobile unlocked edition, except that it lacks T-Mobile AWS 3G band. You can get the Dev edition for Verizon as well which have the same bands support as the regular Verizon version. You can not unlock the bootloader for the regular version of ATT and Verizon.
sent via my Le Motonovo X
Thank you for the clarification, looks like im going the t-mobile route
eksasol said:
Correct me on this if needed, but all Verizon phones are sim unlocked and work with GSM per FCC agreement. So you could get that version, but I would check it first when receiving it to see if it work with a GSM sim, if not you can get an RMA for a refund. The Verizon edition have the 3G bands to work with ATT, it lacks T-Mobile AWS 3G band (1700). Also it only support LTE band 13, it doesn't support LTE bands 2, 4 or 17 that come with the GSM unlocked version, so you will not get LTE on ATT or T-Mobile.
There is zero reason to get the ATT version what so ever, none, zilch. It's sim locked (though you could ask ATT to unlock it I guess), cannot unlock bootloader. The T-Mobile version is actually the unlocked version, it support every bands required by ATT, both 3G and LTE. T-Mobile version have unlocked sim and bootloader, doesn't have carrier logo nor carrier bloatwares.
Then there is the unlocked GSM Developer Edition which allow you to unlock bootloader without losing warranty, is similar to regular T-Mobile unlocked edition, except that it lacks T-Mobile AWS 3G band. You can get the Dev edition for Verizon as well which have the same bands support as the regular Verizon version. You can not unlock the bootloader for the regular version of ATT and Verizon.
sent via my Le Motonovo X
Click to expand...
Click to collapse
So you're saying I could get the Verizon Dev Moto X, and theoretically toss a ATT SIM in it and it will work on ATT (3G-only)? Has anyone tried this?
I can't guarantee it, but that should be the case, all new Verizon phones have unlocked sim on the GSM side, if they don't they would violate the FCC agreement.
We had a discussion on this, see here: http://forum.xda-developers.com/showthread.php?t=2551692
sent via my Le Motonovo X

G4 Verizon on T-Mobile LTE Possible?

Not sure if this is the correct forum but I can't seem to find anything about using VZ G4 on T-mobile? I don't mind if it need to be rooted, just want a stable setting that I can do. TIA.
Unless something has changed lately, you can't. Verizon uses CDMA for its voice network and T-Mobile uses GSM.
With that being said, the only way I've seen any Verizon phone being used on a GSM network is if the phone supports a SIM card (and I'm not sure the SIM card for the LTE counts) and the phone is unlocked to use international SIM cards (which, by default, will allow it to use T-Mobile). There's a catch to that, however. You may not be able to use the optimum frequencies T-Mobile uses if the Verizon phone doesn't support them, which may cause a less than desirable experience with your phone.
An unlocked AT&T G4 would be a better bet. Some international versions of the phone may also be better than the Verizon version. You'll have to do some research on the last one.
In the past I know Verizon would let their cdma/gsm phones work with international sim cards but not att or t-mobile. The verizon g4 supports lte bands 2 and 4 and that's the two main bands that t-mobile uses. It's not clear from the tech specs if the phone supports wcdma but if it does not you might drop to edge while on a call.
like tkirton said you would be much better off with a phone that's intended mainly for GSM. t-mobile branded phones, newer nexus phones(6 and later), and the iphone also have the advantage of volte and wifi calling.
My Verizon G2 worked on T-Mobile and Cricket which as both GSM. I got LTE also, but you'll loose LTE on calls, and probably won't have HD voice. So, G4 might be the same.
MicroMod777 said:
My Verizon G2 worked on T-Mobile and Cricket which as both GSM. I got LTE also, but you'll loose LTE on calls, and probably won't have HD voice. So, G4 might be the same.
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Click to collapse
i can backup/confirm this, i was using the G2 (VS980 Verizon) with T-mobile and i was getting nice LTE Speed in my area but loose some T-Mo features of course....

Tmobile G6 unlocked support AT&T radio bands?

So I am thinking of buying a LG G6 Tmobile unlocked. Will it work on AT&T's network? Just asking, looking at the radio bands they appear to be the same on both phones.
slayer214 said:
So I am thinking of buying a LG G6 Tmobile unlocked. Will it work on AT&T's network? Just asking, looking at the radio bands they appear to be the same on both phones.
Click to expand...
Click to collapse
Yes my SIM unlocked T-Mobile LG G6 works on AT&T. what you lose is the ability to use Video Calls and AT&T Wifi calling. if you plan to use these features, then it would be best to stick with the AT&T version.
cortez.i said:
Yes my SIM unlocked T-Mobile LG G6 works on AT&T. what you lose is the ability to use Video Calls and AT&T Wifi calling. if you plan to use these features, then it would be best to stick with the AT&T version.
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Click to collapse
So I guess you're coverag is ok without band 17, that the Tmobile version doesn't have?

SM-N920R4 US Cellular Variant

Hello all.
I would please like to ask if its possible to install a T-Mobile Note 5 rom on this phone so that i can get Nougat and Wireless calling. I read on the S7 threads its possible to switch from an AT&T phone to a T-Mobile rom. I am hopeful we can do the same for the US Cellular variant as its quite slow with updates, im still on MM albeit April 1 security update.
Thanks
No help?
AT&T and T-Mobile are both GSM carriers. US Cellular is CDMA so you would be better off trying to flash a Verizon firmware and I am not even sure you could do that.
CodeNameRedNeck said:
AT&T and T-Mobile are both GSM carriers. US Cellular is CDMA so you would be better off trying to flash a Verizon firmware and I am not even sure you could do that.
Click to expand...
Click to collapse
i understand that but thats just an LTE band issue. the phone works happily on Tmobile. Its closest relative is a Sprint Note 5 but i dont want to flash Sprint firmware, i want to have Tmobile firmware on it cos im Tmobile.

Flash N920I

Hey folks!
I've had the N920I for all of a week, and I think the experience could be a lot better. I'm currently using it on AT&T in the US. I don't care too much about wifi calling / volte at the moment as I'm on a prepaid plan which doesn't support them. I'm more concerned about 3CA and band support. I understand that if a phone doesn't support an LTE band you can't simply enable it. However, the 3CA configuration is apparently software based, so in lies my question.
Can the N920I be flashed (either whole-firmware or the modem.bin) to allow 3CA on US carrier? Whether or not the flash will be successful is another question entirely. But could this be possible?
Thanks.
Anybody?...

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