Carrier unlocking question - Galaxy S6 Q&A, Help & Troubleshooting

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 carrier 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!!

Valantur said:
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 carrier 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!!
Click to expand...
Click to collapse
Once device is unlocked, it'll stay unlocked.

Related

[Q] unlocking device

guys i have a question. tmobile emailed me an unlocking code for my g2x and i was wonder if the unlocking will work with any rom?
or anytime i flash a rom i need to put the code on the phone i dont know!
gypsy214 said:
guys i have a question. tmobile emailed me an unlocking code for my g2x and i was wonder if the unlocking will work with any rom?
or anytime i flash a rom i need to put the code on the phone i dont know!
Click to expand...
Click to collapse
It will work with any rom and it is permanent.
Sent from my Calculator with Android.
Unlock the phone by putting in a non T-Mobile sim and turning on the phone. The code entry box will appear. Unlock it now before flashing a custom roms. Most customs roms don't have the necessary code to perform the unlock. But once you have unlocked it you never have to do it again no matter what rom you flash.

[Q] Will installing custom ROMs on my Desire S lose my unlock.

Hi,
I bought a brand new Desire S today off someone as it was an unwanted upgrade. The phone was locked on Orange UK and the before I bought it off the person they purchased an unlock code and had someone from a shop unlock the phone. The phone is unlocked and works on O2 UK perfectly. My question is if I was to root my device and s-off (which i've only just heard/read about as this is my first HTC) and install custom ROMs via CWM would my unlock still work?
I apologise if this is noob question.
Thanks
collinsc2 said:
Hi,
I bought a brand new Desire S today off someone as it was an unwanted upgrade. The phone was locked on Orange UK and the before I bought it off the person they purchased an unlock code and had someone from a shop unlock the phone. The phone is unlocked and works on O2 UK perfectly. My question is if I was to root my device and s-off (which i've only just heard/read about as this is my first HTC) and install custom ROMs via CWM would my unlock still work?
I apologise if this is noob question.
Thanks
Click to expand...
Click to collapse
SIM unlock and bootloader unlock are two completely different things. You will not lose SIM unlock by rooting / custom ROM installation. Go ahead and have fun.
enigmaamit said:
SIM unlock and bootloader unlock are two completely different things. You will not lose SIM unlock by rooting / custom ROM installation. Go ahead and have fun.
Click to expand...
Click to collapse
Thanks foryour friendly reply. Great can't wait to get rid of all the unessesary apps that they clogged my device with.

[Q] diff b/w unlocking and rooting

Hi. i m a little confused about phone unlocking. i m on Three UK with a HTC phone which is carrier locked. so no other sim is gonna be used on that phone. if i unlock the boot loader via HTCdev and after that i install/flash a custom rom, will it stay locked? even after flashing another ROM? and can someone tell me how the carriers put a lock on their devices?
thank u.

Carrier Locked

I'm just curious so I asked this. My M2 is Carrier Locked and came from the UK. I live in Asia so I can't use any network with it.
I'm planning to install custom recovery and ROM on my phone. Now, will that affect the phone? I mean am I still Carrier locked if I did install Rom and Recovery? Or I cant do that because I am locked? I'm really confused.
Hope you will answer this one. Kinda noob question. Lol Thank you.
If it's carrier locked to a network then more than likely the Bootloader will not be unlockable. Have you checked as it's usually only sim free network unlocked devices that have unlockable Bootloaders. If this is the case non stock custom roms are out. Also if it's locked to a specific network you'll need a pac code from the network it was on in the UK before it'll work on any other network.
Yes, you can install a custom ROM and recovery, but your phone will still remain carrier locked.

ATT sim lock problem

Actually have ATT A9(CID is BS-US001) with unlocked bootloader , root and s-off. after flashing unlocked ROM 1.57.617.52 still ask me for unlock code when i insert anouther sim. with ATT sim work properly. never see that before. Need your ideas. in getprop [gsm.network.type]: [Unknown]. so may be need to cnange gsm.version.baseband????
Thank in advise!
You have to get an unlock code from AT&T and unlock it yourself. Flashing a rom isn't going to sim unlock your phone.
creusset said:
You have to get an unlock code from AT&T and unlock it yourself. Flashing a rom isn't going to sim unlock your phone.
Click to expand...
Click to collapse
Is unlocked ROM means unlocked GSM like Google play edition for M7? wich one ROM give me unlocked (sim free) phone?
UAALEX said:
Is unlocked ROM means unlocked GSM like Google play edition for M7? wich one ROM give me unlocked (sim free) phone?
Click to expand...
Click to collapse
There's no rom that unlocks your phone. Call att and request an unlock code.
creusset said:
There's no rom that unlocks your phone. Call att and request an unlock code.
Click to expand...
Click to collapse
i have an unlock code but...... the phone not accepted it. may be need brick it totally and then flash it. i am s-off.
Ahhh I thought you were trying to unlock the phone by flashing a rom lol. All you need to do is go back to any stock rom you want and then put the non ATT Sim in, use the unlock code, and then flash whatever other rom you want

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