after i input the unlock code (sim unlock) from tmo, can i do a full factory reset? in other words, will the phone still be unlocked after a full factory reset or do i do the reset first and then input the unlock code?
thank you!
Yes, Once it is unlocked it is unlocked. You can factory reset, flash custom roms, odin back to stock. You will not loose the unlock.
Yeah your good dude like the other guy said once its unlocked the settings are saved deep inside the phones system so u can flash custom roms and all that
Sent from my SGH-T999 using xda premium
good to know fellas. thanks a bunch. time to sell this thing
Once you input unlock or do direct unlock is permanent ...
ok i have another question real quick.. do i need an active sim card to unlock the phone or not??
Guys,
I have a Sony Xperia ION Model - LT28i of my friend, and I just unlocked SIM with paid unlocked code but I would like to do a factory reset. Do you know if I do factory reset if it will affect SIM unlocked code or no?
I'm not sure and I would like to know just to be sure not to pay twice unlock code for the phone.
mqazimi said:
Guys,
I have a Sony Xperia ION Model - LT28i of my friend, and I just unlocked SIM with paid unlocked code but I would like to do a factory reset. Do you know if I do factory reset if it will affect SIM unlocked code or no?
I'm not sure and I would like to know just to be sure not to pay twice unlock code for the phone.
Click to expand...
Click to collapse
Once unlocked. Its permanent. You can update , u can flash , you can factory reset million times.
Captain Droid said:
Once unlocked. Its permanent. You can update , u can flash , you can factory reset million times.
Click to expand...
Click to collapse
Thanks a lot.
mqazimi said:
Thanks a lot.
Click to expand...
Click to collapse
Ur welcome
If I reset my phone to factory settings from root and S-Off will my unlocked status go away? I have Super CID and I unlocked my phone but I am trying to sell it as an unlocked device so wanted to check if that will disappear.
Bootloader unlock will remain, as will S-Off.
BenPope said:
Bootloader unlock will remain, as will S-Off.
Click to expand...
Click to collapse
i meant more as in carrier unlocked to use with other carriers since mine is a T-Mobile one
cromo8 said:
i meant more as in carrier unlocked to use with other carriers since mine is a T-Mobile one
Click to expand...
Click to collapse
Factory reset won't bring back a carrier/sim lock either.
BenPope said:
Factory reset won't bring back a carrier/sim lock either.
Click to expand...
Click to collapse
I mean a full RUU reset
If you have no plans to root the phone is there any reason to unlock the bootloader?
It would probably break Safety net and Android pay. BUT if you're unlocked, you have ability to flash factory images. That could be beneficial something goes really bad and your device won't boot up. You're also less secure with it unlocked.
Sent from my marlin using XDA Labs
You can always lock and unlock the bootloader when you want.
I would say you should at least have the option checked on in the Developer settings.
So just in case something happened and you can't fully boot the phone. you can still get into it and unlock the bootloader and do what you need to do.
This happened to a friend of mine where something happened and couldn't fully boot and couldn't unlock bootloader cause the option was never checked.
I don't believe the unlock option stays enabled after it boots up.
I would argue why WOULDN'T you unlock the bootloader? Regardless of rooting, an unlocked bootloader is a safety net for when things go south. Phone decides to bootloop tomorrow? No big deal, flash the latest images via fastboot and start from scratch.
Sure there's the counter argument of the phone being much less secure and vulnerable in the hands of a person who is tech savvy and stole/found your device. I'm not worried about my phone being stolen so I ALWAYS unlock my bootloader.
Pain-N-Panic said:
I would argue why WOULDN'T you unlock the bootloader? Regardless of rooting, an unlocked bootloader is a safety net for when things go south. Phone decides to bootloop tomorrow? No big deal, flash the latest images via fastboot and start from scratch.
Sure there's the counter argument of the phone being much less secure and vulnerable in the hands of a person who is tech savvy and stole/found your device. I'm not worried about my phone being stolen so I ALWAYS unlock my bootloader.
Click to expand...
Click to collapse
or just flash the full OTA image without an unlocked bootloader.
mngdew said:
You can always lock and unlock the bootloader when you want.
Click to expand...
Click to collapse
Does re-locking the bootloader wipe the phone?
foosion said:
Does re-locking the bootloader wipe the phone?
Click to expand...
Click to collapse
Yes, it does. That's why you should unlock or lock the bootloader when flashing factory images.
mngdew said:
Yes, it does.
Click to expand...
Click to collapse
Thanks
mngdew said:
That's why you should unlock or lock the bootloader when flashing factory images.
Click to expand...
Click to collapse
I don't understand what you mean by this.
You have to unlock the bootloader to flash a factory image and you can eliminate the w flag so that flashing the factory image won't wipe the phone.
uicnren said:
or just flash the full OTA image without an unlocked bootloader.
Click to expand...
Click to collapse
Very true. If the phone goes into booploop due to a bad zip or whatever other reason you have a bricked device with no options to recover.
It's healthy for me to unlock my Bootloader ASAP on XDA!
Unlocking the bootloader was always the very first thing I did when I got a new phone. However, I use Android Pay all the time, and Google seems very determined to break AP for unlocked bootloaders with every new patch. Sure, someone usually finds a way to get it working again, but that sometimes takes time, and I simply use AP too much to deal with it. As long as AP won't work officially with an unlocked bootloader, mine stays locked unless I'm flashing an image, and even then, gets locked right after. Luckily, OTAs are posted by Google now, often at the same time as the Factory Images, so it hasn't really been an issue for me.
akenis said:
It would probably break Safety net and Android pay. BUT if you're unlocked, you have ability to flash factory images. That could be beneficial something goes really bad and your device won't boot up. You're also less secure with it unlocked.
Sent from my marlin using XDA Labs
Click to expand...
Click to collapse
Thank you what actually is compromised when phone is unlocked?
uicnren said:
or just flash the full OTA image without an unlocked bootloader.
Click to expand...
Click to collapse
How can you flash with a locked bootloader?
painfree said:
Thank you what actually is compromised when phone is unlocked?
Click to expand...
Click to collapse
Data?
https://www.google.com/amp/s/www.ho...unlocking-your-android-phones-bootloader/amp/
Sent from my marlin using XDA Labs
painfree said:
If you have no plans to root the phone is there any reason to unlock the bootloader?
Click to expand...
Click to collapse
If you ever contemplate going onto the Verizon network, when you first boot up after placing VZN sim into the phone,
the ability to ever unlock again is eliminated. You could relock it, but it will have the Unlock option in Developer
Option greyed out forever after that. I would unlock it maybe because of Verizon thing, but also to be able to flash factory a image in case I ever mess up the phone.
michaelbsheldon said:
If you ever contemplate going onto the Verizon network, when you first boot up after placing VZN sim into the phone,
the ability to ever unlock again is eliminated. You could relock it, but it will have the Unlock option in Developer
Option greyed out forever after that. I would unlock it maybe because of Verizon thing, but also to be able to flash factory a image in case I ever mess up the phone.
Click to expand...
Click to collapse
As long as you have the Google version it should never grey out on you at least that's how it was with the first pixels. I have Verizon I've never had it grey out.
jt3 said:
Unlocking the bootloader was always the very first thing I did when I got a new phone. However, I use Android Pay all the time, and Google seems very determined to break AP for unlocked bootloaders with every new patch. Sure, someone usually finds a way to get it working again, but that sometimes takes time, and I simply use AP too much to deal with it. As long as AP won't work officially with an unlocked bootloader, mine stays locked unless I'm flashing an image, and even then, gets locked right after. Luckily, OTAs are posted by Google now, often at the same time as the Factory Images, so it hasn't really been an issue for me.
Click to expand...
Click to collapse
This. Android Pay is pretty convenient and I always told myself I didn't need it compared to unlock+root. Wish Google would allow AP with unlocked bootloader but I can understand why they don't from a security standpoint.
Sent from my Pixel 2 XL using Tapatalk
foosion said:
Thanks
I don't understand what you mean by this.
You have to unlock the bootloader to flash a factory image and you can eliminate the w flag so that flashing the factory image won't wipe the phone.
Click to expand...
Click to collapse
When you unlock the bootloader, phone is wiped automatically.
I'm going to keep this short and sweet. I have a Sprint S9 SM-G960U and its activation locked and been factory reset. My friend gave me his old phone after he upgraded because he forgot the lock code and does not remember what google account was used to unlock the device after it was reset from the factory reset boot menu.
Is it possible to unlock the bootloader...if thats even needed, root the device, and flash a custom rom to get around this?
xVoidx said:
I'm going to keep this short and sweet. I have a Sprint S9 SM-G960U and its activation locked and been factory reset. My friend gave me his old phone after he upgraded because he forgot the lock code and does not remember what google account was used to unlock the device after it was reset from the factory reset boot menu.
Is it possible to unlock the bootloader...if thats even needed, root the device, and flash a custom rom to get around this?
Click to expand...
Click to collapse
AFAIK there is no reliable rooting / bootloader unlocking method available
Same question for a european SM-G960U (Snapdragon), where no "OEM unlock" option is available in Developers options.
I've just factory reset it, and am currently waiting for the tedious 7-day uptime period to pass, but am I keeping my hopes too up ??
Please share your results and whether or not it was successful. Thanks!
Well, no luck : no unlock option appeared, and the owner decided to get their device back, so I sadly don't have any result to contribue.
breversa said:
Well, no luck : no unlock option appeared, and the owner decided to get their device back, so I sadly don't have any result to contribue.
Click to expand...
Click to collapse
Bummer!!!