G900A SIM unlocked - can I also flash other ROMs now? - AT&T Samsung Galaxy S 5

Sorry for the newb question. I know the bootloader is always locked on AT&T devices. But now that it's SIM unlocked, will it allow me to flash other region ROMs like the 900I? Will be using it in Thailand.

Unfortunately, the answer is no. The SIM card settings doesn't have any bearing on flashability. You'll have to wait until there's a way to root the version of android that your phone is on.

Thank you for the clarification.

Related

what happen if unlocked phone is rooted and upgrade to custom rom

i buy the phone HTC DREAM from the internet (i'm from malaysia) so i don't have T MOBILE SIM, but it's already unlocked.
what happen if i rooted or flash the phone with custom rom such as JACHeroski and etc.
will the phone become locked again ??
if the phone is locked, can i still able to like root and flash the phone ??
a rooted phone with custom rom, can eliminate the unlocking process ???
thx in advance
sorry for my poor english
keatliang2005 said:
i buy the phone HTC DREAM from the internet (i'm from malaysia) so i don't have T MOBILE SIM, but it's already unlocked.
what happen if i rooted or flash the phone with custom rom such as JACHeroski and etc.
will the phone become locked again ??
if the phone is locked, can i still able to like root and flash the phone ??
a rooted phone with custom rom, can eliminate the unlocking process ???
thx in advance
sorry for my poor english
Click to expand...
Click to collapse
No. A custom ROM wouldn't lock or unlock the phone. It can be unlocked for any SIM and still be stock firmware, it can also be unlocked for any SIM and have a custom rom.
The two things are completely different.
Hope this helps.
You can do whatever you want to any rom, and that won't affect anything that makes it unlocked
thx for replying,
so meaning, currently the phone is unlocked, and i downgrade to RC29
so it wont be locked again ?
because need to downgrade to root-ed the firmware....
is this mean, downgrade my unlocked phone firmware to RC29
in the process, it will not reset my phone from unlock back to lock status ??
if it will not make my phone locked back again during the process
and i success downgrade to RC29 i can gain root access, then i can update to custom firmware
so another question, in the upgrading process (flasing to custom firmware or cupcake 1.5) will it set back from unlock to locked ??
sorry for my bad english
appreciate for replying, i need to know before i done anything
in the process,
Hi. I also have an unlocked phone. It was unlocked prior I downgraded it, and flashed new custom roms, and it is still unlocked. As the others said no need to worry, if i'm right the locking thing is in deeper level. Of course everything you do with your phone is your responsibility.
eami said:
Hi. I also have an unlocked phone. It was unlocked prior I downgraded it, and flashed new custom roms, and it is still unlocked. As the others said no need to worry, if i'm right the locking thing is in deeper level. Of course everything you do with your phone is your responsibility.
Click to expand...
Click to collapse
thx for the reply, now i can do the firmware flashing
unlock after root?
NPerry said:
No. A custom ROM wouldn't lock or unlock the phone. It can be unlocked for any SIM and still be stock firmware, it can also be unlocked for any SIM and have a custom rom.
The two things are completely different.
Hope this helps.
Click to expand...
Click to collapse
Can T-mobile still unlock the phone after I rooted it or would they know that I put a custom rom on it??
c_licious said:
Can T-mobile still unlock the phone after I rooted it or would they know that I put a custom rom on it??
Click to expand...
Click to collapse
Yes, you can still unlock it through T-Mo. No one at T-Mo needs to have physical access to your phone, they can give you an unlock code over the phone.
c_licious said:
Can T-mobile still unlock the phone after I rooted it or would they know that I put a custom rom on it??
Click to expand...
Click to collapse
One has nothing to do with the other. ROMs have nothing to do with the SIM cards and SIM cards have nothing to do with ROMs. T-Mobile isn't going to come to your house and spank you for having a custom ROM because they "know"
DirectMatrix said:
One has nothing to do with the other. ROMs have nothing to do with the SIM cards and SIM cards have nothing to do with ROMs. T-Mobile isn't going to come to your house and spank you for having a custom ROM because they "know"
Click to expand...
Click to collapse
Hmm highly unfortunate. Wouldn't have minded a little love tap from Cindy with Customer Service LOL
Thanks buddy!

Am I dumb? Re: Unlocking

Hi. The day I got the HTC One (from Bell) I went through the "unlock bootloader" and rooting process. Everything went fine and I've been using various ROMs and Kernels.
My question is: Is my phone "unlocked" as in able to be used with other carriers? I thought that's what unlocking the bootloader is.
I'm asking this because I got a SIM card for cheap roaming in the US, which I tried to test yesterday. When I booted the phone after putting in the Roam sim card, it prompted me to enter an 8 digit access (or pin) code. I had no idea what that was. And when I called support they said I would get that prompt if my phone wasn't unlocked.
So... is unlocking bootloader the same as unlocking from a specific carrier?
Yes, you can use all carrer if your phone isn't SIMLocked by the carrier.
So, seems that your sim is blocked, 8 digit for pin is the puk for unlock your sim.
How can I know 100% if my phone is unlocked? (other than inserting a SIM from another carriers). Is there something in settings that indicates unlocked?
FligMupple said:
How can I know 100% if my phone is unlocked? (other than inserting a SIM from another carriers). Is there something in settings that indicates unlocked?
Click to expand...
Click to collapse
Nope...
Is branded your phone?
Sent from One with Tapa4 Beta
Guich said:
Nope...
Is branded your phone?
Click to expand...
Click to collapse
I'm not sure what you mean. The phone was originally branded with Bell Canada. Then I unlocked the bootloader and rooted.
FligMupple said:
I'm not sure what you mean. The phone was originally branded with Bell Canada. Then I unlocked the bootloader and rooted.
Click to expand...
Click to collapse
So, probably, you phone is SimLocked by Bell Canada
You can contact they and check...
Sent from One with Tapa4 Beta
Unlocking the bootloader has nothing to do with unlocking the phone to use on other carriers. Your device is still SIM locked If you want to be able to use your phone with another carrier's SIM card, you will have to find a website that provides such service, like cellunlocker.netcellunlocker.net
Sent from my HTC One using xda premium
kassemalaa said:
Unlocking the bootloader has nothing to do with unlocking the phone to use on other carriers. Your device is still SIM locked If you want to be able to use your phone with another carrier's SIM card, you will have to find a website that provides such service, like cellunlocker.netcellunlocker.net
Click to expand...
Click to collapse
Thanks, that is what I wanted to know!

Carrier unlock a G920T permanently

Hi guys,
I need some clarification re: carrier unlocking and how it works. I recently purchased a carrier unlocked G920T, and I was going to start messing with custom roms/kernels and other goodies. My question is: Will the phone revert back to being locked if I do a factory reset or if I unlock the bootloader and flash custom roms?
I'm not a T-Mobile user, so I can't get another unlock code from them.
Thanks!!
The G920T has a carrier unlocked version, which is probably the one you have, not the T-Mobile one. Even if it is, usually a carrier unlocked device will remain unlocked forever unless it was unlocked using a different or hacky method, then there is a possibility that it will relock
Sent from my SM-G920T using Tapatalk
Yeahh go ahead, mess with it. when it is carrier unlocked, the software doesn't affect it, unless it is a hacky method like @serio22 said, but there isnt such hacky method for the GS6 so have fun.
If it is a G920T (the T means it's from T-Mobile), then carrier unlocking is not a guaranteed state. I paid T-Mobile the full price to get my GS6 and they "permanently" unlocked it. Then after a OTA software patch all of a sudden it locked itself again and I couldn't use my phone for 2 days while they tried to unlock it. T-Mobile's new device unlocking uses a new system which has the phone "phone home" to their servers to check if you're allowed to use it outside of their network. It happened again when I accepted the Android 5.1.1 OTA. So...beware of T-Mobile's not-very-permanent permanent carrier unlocking.
I am living in india..
My relatives brought me the t model ( i wanted f model instead of i sold in india for quicker updates but got t model...lol )
Anyways,
The moment i inserted my sim, it worked like a charm so its unlocked at the moment.
I dont know how they made payment their or how it was unlocked, but the way used must be legit coz its still stock at the moment without root / recovery etc. .
I read humo saying it can get locked again...
My main question, what are the odds of that happening?
Also since i live in india, i wont be able to contact t mobile via phone/walk in, are there ways i can get it unlocked again?
I dont have the bill too if it matters
i believe they have an app that unlock ur device since that is how i unlocked mine. if not u can try to contact customer service online since u r not in US.
With device unlock app , will i have to pay for unlock my s6 g920t or it'll unlock my device for free.
I have an unlocked s6 tmobile from usa, i heard the flashing stock rom will relock the device.
If the phone will relock then how can i unlock it again?
I'm not sure about flashing a stock ROM relocking the device. Mine re-locked when T-Mobile sent Android security patches. This week I did the Android 6.0 OTA update and it has remained unlocked.
Hey guys! i have a factory unlocked version of s6 tmobile, my question is if i can flash the tmobile MM firmware . My model says "country: cellular south" and the firmware country says us tmobile, so i dont know if i can flash without any problems, (Sorry for my english it sucks) thanks !
polipol15 said:
Hey guys! i have a factory unlocked version of s6 tmobile, my question is if i can flash the tmobile MM firmware . My model says "country: cellular south" and the firmware country says us tmobile, so i dont know if i can flash without any problems, (Sorry for my english it sucks) thanks !
Click to expand...
Click to collapse
Polio, i have the same phone and i flashed MM without any problems. Check out the q&a section here and theres a recent thread that talks about how to that refers to a reddit post
Sent from my SM-G920T using XDA-Developers mobile app
bitbank said:
If it is a G920T (the T means it's from T-Mobile), then carrier unlocking is not a guaranteed state. I paid T-Mobile the full price to get my GS6 and they "permanently" unlocked it. Then after a OTA software patch all of a sudden it locked itself again and I couldn't use my phone for 2 days while they tried to unlock it. T-Mobile's new device unlocking uses a new system which has the phone "phone home" to their servers to check if you're allowed to use it outside of their network. It happened again when I accepted the Android 5.1.1 OTA. So...beware of T-Mobile's not-very-permanent permanent carrier unlocking.
Click to expand...
Click to collapse
How did you solve this? My phone stopped working flashed newest (G920TUES5DPK1_G920TXAR5DPK1_G920TUES5DPK1_HOME.tar.rar) and i can't go to older version as that gives me ;
Code:
SW REV. CHECK FAIL DEVICE: 5 BINARY: 3
Christiaanjadieja said:
How did you solve this? My phone stopped working flashed newest (G920TUES5DPK1_G920TXAR5DPK1_G920TUES5DPK1_HOME.tar.rar) and i can't go to older version as that gives me ;
Code:
SW REV. CHECK FAIL DEVICE: 5 BINARY: 3
Click to expand...
Click to collapse
You can't downgrade your bootloader so you'd have to pay to unlock it unfortunately
crixley said:
You can't downgrade your bootloader so you'd have to pay to unlock it unfortunately
Click to expand...
Click to collapse
Got it done remotely!
I have a Galaxy S6 (SM-G920T) from T-Mobile. It was locked. But it has an "Unlock" app installed by default. I used it and phone was instantly unlocked! Fast, easy and free!
I used to live in the US for a year and bought a g920T. Since i had the requirements i Unlocked and came back to my country but because of a problem, I had to install a stock firmware and now the unlock is gone.
So i'm wondering, if someone with a unlocked phone made firmware backup, remove the IMEI, and send it online would it work? I mean, right now it works just fine, so i can backup my IMEI and ID and just restore it if needed.
Please help
danveer said:
I am living in india..
My relatives brought me the t model ( i wanted f model instead of i sold in india for quicker updates but got t model...lol )
Anyways,
The moment i inserted my sim, it worked like a charm so its unlocked at the moment.
I dont know how they made payment their or how it was unlocked, but the way used must be legit coz its still stock at the moment without root / recovery etc. .
I read humo saying it can get locked again...
My main question, what are the odds of that happening?
Also since i live in india, i wont be able to contact t mobile via phone/walk in, are there ways i can get it unlocked again?
I dont have the bill too if it matters
Click to expand...
Click to collapse
I am in same scenario as you are/were,I am also having s6 (Tmobile) please tell me did flashing relocked your device?
So far no
I have flashed recovery - custom rom - kernel
Messed up sometimes so even went back to stock using odin then flashed everything again
Its still unkocked
Hello! I've bought my S6 (SM-G920T) as carrier unlocked but when my pcb has burned due to factory fault and sent my phone to Samsung they gave me again it was locked. I'm from Argentina and I haven't T-Mobile sim to unlock with default application. I've called to my carrier in Argentina and they said me the IMEI it's unlocked but my phone still sais it's network blocked... Can anybody help me?
vita_lp said:
Hello! I've bought my S6 (SM-G920T) as carrier unlocked but when my pcb has burned due to factory fault and sent my phone to Samsung they gave me again it was locked. I'm from Argentina and I haven't T-Mobile sim to unlock with default application. I've called to my carrier in Argentina and they said me the IMEI it's unlocked but my phone still sais it's network blocked... Can anybody help me?
Click to expand...
Click to collapse
Have you tried with the tmobile device unloced app.? If that doesnt work then head over to this awesome guy, he can help you unlock it remotely. https://forum.xda-developers.com/tmobile-galaxy-s6/general/sim-unlock-honestly-free-t3601740

Firmware question

Hello, guys! I`m using my s6 at&t in Ukraine, and it works perfectly with my sim. Firmware is 5.1.1 Is it possible to install 6.x and it is possible to get my phone locked to at&t after installin it? thanks in advance
I doubt that if your phone is a unlocked phone also known as a sim unlock phone that is that it can be used with any carrier would get locked due to a software update. Since you mentioned that you are in Ukraine and if it works with the local sim that means that the phone is a sim unlocked phone and would probably not be affected by a software update.
Also just use odin to update the phone
mnp261194 said:
I doubt that if your phone is a unlocked phone also known as a sim unlock phone that is that it can be used with any carrier would get locked due to a software update. Since you mentioned that you are in Ukraine and if it works with the local sim that means that the phone is a sim unlocked phone and would probably not be affected by a software update.
Also just use odin to update the phone
Click to expand...
Click to collapse
Thank you so much! i will try to upgrade it

Bootlaoder Unlocking

Hey:
Trying to help a friend unlock the bootlaoder on his S5 g900a. Was reading a how-to thread on this site, but now, can't find it. I want everyone to understand something...this is an S5 g900a, meaning; sold by AT&T. This particular model is a different animal than other S5's. AT&T 'locked" (or had Samsung) the bootloader. You CANNOT root this phone!!! and, so far, cannot unlock the factory 'locked" bootloader. So, need to unlock this phones bootloader using D/l software and instructions. His phone is running Mm 6.0.1 w/ 8Gb SD card. Someone here know what I'm discussing and could help?
THANX:
RICK
There are multiple threads that answer this...the Bootloader can not be unlocked at this time.
johnkirchner said:
There are multiple threads that answer this...the Bootloader can not be unlocked at this time.
Click to expand...
Click to collapse
Evening John:
Not meaning to contradict or argue, but could you explain how/why E-Bay sells that particular model (g900a--AT&T) 'unlocked"...which couldn't be accomplished without unlocking the bootloader?
Rick
It's probably SIM unlocked meaning you can use on any carrier that uses a SIM card. Trust me the bootloader is locked tighter than fort Knox. There are some working on trying to unlock it though.

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