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[Q] replace ATT S5 with T-Mobile

I think I can get a T-Mobile S5 and a SIM unlock and use it on AT&Ts network. Is this correct? I really want an unlocked bootloader and the abilty to run non touchwiz roms. Also, is it possible to create a hybrid kernel gto support AOSP roms under touchwiz. Never mind, locked boot loader can't change the kernel anyway, can I?
The other option may be the verizon dev edition phone. Is it possible to unlock it for ATT Network use? I'm a developer myself but just into android and cell phones in general, and I do not yet know what parts fit togrther

dposea123 said:
I think I can get a T-Mobile S5 and a SIM unlock and use it on AT&Ts network. Is this correct? I really want an unlocked bootloader and the abilty to run non touchwiz roms. Also, is it possible to create a hybrid kernel gto support AOSP roms under touchwiz. Never mind, locked boot loader can't change the kernel anyway, can I?
The other option may be the verizon dev edition phone. Is it possible to unlock it for ATT Network use? I'm a developer myself but just into android and cell phones in general, and I do not yet know what parts fit togrther
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Click to collapse
The T-Mobile S5 is capable of being unlocked and used on at&t's network.

I use a T-Mobile variant on AT&T and love it.
All the required bands, excellent speeds and plenty of ROM options.

Unlock G900A
seanpr123 said:
I use a T-Mobile variant on AT&T and love it.
All the required bands, excellent speeds and plenty of ROM options.
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Click to collapse
I have an ATT SM-G900A S5 that is locked. I have the unlock code but don't know how to enter it. I have an old T-Mobile Sim but it is deactivated so it wont trigger the unlock fields. is there a code( *#xxx#) I can use to allow me to enter the unlock code?
Do I have to find an active T-Mobile sim?
Thanks for the advise. I just got this S5 and can do all but use it as a hot spot! ugh HELP!

MWTTRON said:
I have an ATT SM-G900A S5 that is locked. I have the unlock code but don't know how to enter it. I have an old T-Mobile Sim but it is deactivated so it wont trigger the unlock fields. is there a code( *#xxx#) I can use to allow me to enter the unlock code?
Do I have to find an active T-Mobile sim?
Thanks for the advise. I just got this S5 and can do all but use it as a hot spot! ugh HELP!
Click to expand...
Click to collapse
First of all don't just randomly post in other peoples threads. Do you have a question? Thoroughly use the site's search function and search google. If, and only if, you haven't found your answer you start your own thread (not just randomly post in other peoples threads).
As far as I know you need a working sim card of another operator. I'm sure you can order them for free online.
Don't post in this thread no more. Make your own instead.
Here is a really good start for you. Good luck. :good:

Flashing international Firmware

Hello everyone,
yesterday, a family member gifted me an s7 from the USA (SM-G930P). He bought the phone off SPRINT as a SPRINT unlocked version, and, of course, because I live in Europe and want to use the phone with a European SIM card I have the "hands free activation" mark that is sitting on the top left edge of the display. I also noticed some changes, for example the "mobile data" toggle is nowhere to be found and also I don't have the options to choose the network mode (2G/3G/4G). I love the phone and I also would like to keep using it, I only need some answers from you guys.
My first question is, if the phone will actually let me use 4G network with my European SIM card, or will I be limited to 3G?
My second question is, If I can flash an international firmware for another carrier and another country on the phone, and if so, will I have the advantages of that firmware, like the Mobile Data Toggle??
Thank you very much for your answers.

If you install the 'Network' app you might be able to change the network type.
In general you should be able to use an unlocked P variant with a foreign SIM but you may have to activate with a Sprint SIM first.
You can't flash the international version since it's Exynos and the P version is Qualcomm CPU.
I am not sure if this model has Samsung region lock which is another thing to consider.
If I was you I would try to flash the U firmware (US unlocked) as it has the most support for international 4G bands among the Qualcomm US models. It also doesn't have all of the Sprint bloatware on it.

myphone12345 said:
If you install the 'Network' app you might be able to change the network type.
In general you should be able to use an unlocked P variant with a foreign SIM but you may have to activate with a Sprint SIM first.
You can't flash the international version since it's Exynos and the P version is Qualcomm CPU.
I am not sure if this model has Samsung region lock which is another thing to consider.
If I was you I would try to flash the U firmware (US unlocked) as it has the most support for international 4G bands among the Qualcomm US models. It also doesn't have all of the Sprint bloatware on it.
Click to expand...
Click to collapse
Thank you for your reply. I am currently using the European Sim from my carrier and I have no problems with it. I managed to get rid of the Bloatware by using Package Disabler Pro, but it still sits there somewhere on my phone. So far, the phone is working very well and other than the bloat sitting on my memory and the lack of LTE, I have no complaints.
Can you tell me if someone has tried to flash the U firmware on a P model with success?

KingFoltest said:
Thank you for your reply. I am currently using the European Sim from my carrier and I have no problems with it. I managed to get rid of the Bloatware by using Package Disabler Pro, but it still sits there somewhere on my phone. So far, the phone is working very well and other than the bloat sitting on my memory and the lack of LTE, I have no complaints.
Can you tell me if someone has tried to flash the U firmware on a P model with success?
Click to expand...
Click to collapse
My phone was 930p now it's using 930U it runs significantly better on the 930U variant

vegoja said:
My phone was 930p now it's using 930U it runs significantly better on the 930U variant
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Click to collapse
Could you tell me how you did it, or link me a guide??

I had bought an unlocked Sprint galaxy S7 (930P) off ebay which died on me. Got it repaired from the service center and they sent me a locked device instead. The phone is currently on Software Version - G930PVPS4BQC1 and the hardware revision is Rev 0.6. I'll be using the phone in India and have a few questions.
1. I need to get this SIM unlocked from a service online. Does anyone know of a reliable place to do so?
2. If I flash the U Rom on it after unlocking it, will I lose the unlock? (I don't mind downgrading from Nougat to Marshmallow)
3. Should I unlock first then flash the ROM or flash the ROM first and then try to get it unlocked?
4. Will flashing the ROM directly unlock the phone itself?
Please advise.

...
you could try gsm zambia to unlock your phone it works i tried it myself a few days ago, also after my phone got unlocked i flash the U firmware/rom and the unlocked remained. so you should unlock your device first then flash the U firmware :good:
PS. if you one nougat better to downgrade if you can do marshmallow so when you wont have any issues flashing to U firmware. :cool
2kool2btrue said:
I had bought an unlocked Sprint galaxy S7 (930P) off ebay which died on me. Got it repaired from the service center and they sent me a locked device instead. The phone is currently on Software Version - G930PVPS4BQC1 and the hardware revision is Rev 0.6. I'll be using the phone in India and have a few questions.
1. I need to get this SIM unlocked from a service online. Does anyone know of a reliable place to do so?
2. If I flash the U Rom on it after unlocking it, will I lose the unlock? (I don't mind downgrading from Nougat to Marshmallow)
3. Should I unlock first then flash the ROM or flash the ROM first and then try to get it unlocked?
4. Will flashing the ROM directly unlock the phone itself?
Please advise.
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Click to collapse

Verizon & T-Mobile Question

I have a verizon S4 that I want to use on the t-mobile network and was thinking about rooting with the intent of installed a custom ROM. My question is can I install the t-mobile stock ROM on it? if not does anyone have a recommendation on what ROM would be good to install in it?

If the phone is locked to Verizon's network only, then you won't be able to use it on T-Mobile not matter how many ROMs you put on it.

Pwnycorn said:
If the phone is locked to Verizon's network only, then you won't be able to use it on T-Mobile not matter how many ROMs you put on it.
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It is not locked, I am able to use a T-Mobile SIM card successfully, it just has all of the branding and I keep getting an "non verizon sim card installed" message. I can make calls and access the internet just fine. It shows connected to 4G LTE

Can't a stock T-Mobile ROM onto a verizon s4.

Using the AT&T H910 outside of the US. Does that mean I will never get any update?

Using the AT&T H910 outside of the US. Does that mean I will never get any update?
I heard that an active AT&T sim card is required for software or system update. Is it possible that I buy an AT&T prepaid sim card from ebay and use it solely for system update outside of the US?

Yes. As long as you are on an AT&T network. Roaming on another provider will not work. You have to have an AT&T SIM *AND* be on the AT&T network.
The other very LONG way, is to root your phone, and then flash the latest firmware. If you don't want to stay rooted, then you can flash the latest full stock firmware which will take you back to stock.
-- Brian

I have this issue as well, unlocked AT&T version on Cricket, I bought a GoPhone SIM hoping that just putting it in the phone would work, but it needs to be active.

Okay thanks for your replies. I guess there is nothing more I can do about it then.

york824 said:
I heard that an active AT&T sim card is required for software or system update. Is it possible that I buy an AT&T prepaid sim card from ebay and use it solely for system update outside of the US?
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Click to collapse
If using 900ds on Cricket, will cricket push updates or can one use the att SIM trick? Ty

Wich LG v20 is better for root and custom rom?

Hi, want to buy a used LG v20 but i want to make sure it will be able to root it and custum it....
for now i buy a lgv20 only 50$ on ebay but it's locked and with US cellular... so i cant do nothing with it.... so i think i should buy another one... but wich one... this is the question...
i would like to have the root function, the FM function activated... the multi user activated... for now nothing of that is possible with the lgv 20 US cellular
thx

Someone posted on this forum recently that you CAN get OFFICIAL bootloader unlock from LG on US Cellular. Try it!

I have the same question. Is there a preferred model for the V20? I was thinking of getting an unlocked US996 model, primarily for audio/video use with no sim. I would, however, like it to work with AT&T as a backup to my iPhone. I know it uses the same nano-sim format. Of course I would like to root, etc as safely as possible. I haven't bought it yet, so advise is very welcome and appreciated.
I understand the US996 can get official bootloader unlock directly from LG.

rlw6534 said:
I have the same question. Is there a preferred model for the V20? I was thinking of getting an unlocked US996 model, primarily for audio/video use with no sim. I would, however, like it to work with AT&T as a backup to my iPhone. I know it uses the same nano-sim format. Of course I would like to root, etc as safely as possible. I haven't bought it yet, so advise is very welcome and appreciated.
I understand the US996 can get official bootloader unlock directly from LG.
Click to expand...
Click to collapse
The unlocked US996 is by far the easiest to root and will work on AT&T, but you won't get VoLTE and Wi-Fi calling if those matter to you. Only the AT&T-branded H910 will have those working.

C D said:
The unlocked US996 is by far the easiest to root and will work on AT&T, but you won't get VoLTE and Wi-Fi calling if those matter to you. Only the AT&T-branded H910 will have those working.
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Thank you for responding!!!
Rooting is more important for me as I don't plan on using it as my primary phone anyway. Sound like US996 is the way to go if you like to play with custom ROMs, etc.