Develop Bugs

Galaxy S3 Unlock Code not working

I have a galaxy s3 and a valid unlock code from tmobile. The problem is when I enter the unlock code in, it says "sim unlock network unsucessful"
I called T-Mobile and they told me to try again after 24 hours, but it still does not work. Could it be because I am on a custom rom (AOKP MR1) ?
I am in India and am trying to use the phone on a local carrier here, such as aircel. What should I do? Thanks

Yup. You need to do it from the stock TW dialer.
Sent from my SGH-T999 using xda premium

Already unlocked sgh-i747 need recover

Hi THERE ,
I have an unlocked AT&T S3 phone and it has been flashed with stock ROM and updates of 4.4.2 has been installed and everything was deleted .
so now , how could i restore or recover the unlock code to use it again to unlock the phone ?
thanks FOR YOUR TIME

ahmad83it said:
Hi THERE ,
I have an unlocked AT&T S3 phone and it has been flashed with stock ROM and updates of 4.4.2 has been installed and everything was deleted .
so now , how could i restore or recover the unlock code to use it again to unlock the phone ?
thanks FOR YOUR TIME
Click to expand...
Click to collapse
If the phone was properly unlocked in the first instance, it would be impossible to lock it back again as the unlocking process should survive any firmware upgrade. I'm somewhat puzzled by your question. Could you please clarify? The only way to test if it is still locked would be to put a non-standard SIM inside (i.e. any non AT&T sim). If it requests an unlock code, then it means it was not unlocked at first.

Yes I did this I put non-att Sim card and it requests an unlock code
Before flashing it was working 100% without att Sim but now NO
Sent from my HUAWEI Y511-U30 using XDA Free mobile app

Were able to use the phone with another carrier's sim card? After fixing your phone, it will only work with an AT&T sim card?

Yes it like this
I am wondering from where could I get back the unlock code.
Any way any idea
Sent from my HUAWEI Y511-U30 using XDA Free mobile app

Did you buy a code? If you did, the unlock code would not have changed as long as the imei did not change.
If it was unlocked when you received the phone, you'll have to buy another unlock code.
I'm surprised it became locked after it was bricked. I didn't think this would happen.

Are there any firmware for unlocked sgh-i747.
Sent from my HUAWEI Y511-U30 using XDA Free mobile app

If you are on a stock ROM that is 4.3 or higher, you must buy a code.

Need help SIM unlocking

I searched the threads, I searched the google. I can't seem to get it to the point of prompting for a SIM unlock code.
The error I'm getting when I go to "Network Lock" or "Service Provider Lock" is "This phone is permanently locked and can not be unlocked."
Picture attached.

Are you on stock or a custom AOSP ROM?

Critical Detox said:
Are you on stock or a custom AOSP ROM?
Click to expand...
Click to collapse
I'm on a completely stock rom.

Is it a GSM model G3?

Yes. The D851

What sim are you trying to use? Did u purchase this phone brand new from the store?
Sent from my LG-D851 using XDA Free mobile app

Well, the phone sold, so it's no longer my problem. The guy who bought it is on T-Mobile, so whatever.

LG G3 SIM unlock problem

My LG G3 is running on stock Android 6 Marshmallow, version V30b-EUR-XX, using custom recovery (TWRP), rooted.
The phone is network locked to my carrier. I got a network unlock code (NCK), however, when I enter the unlock menu (2945#*855#) and go to network unlock option, enter the code I get a "SIM network unlock request unsuccessful" error and the attempt counter does NOT go up (always staying on 1/10).
From that I concluded that the phone isn't even trying to unlock the SIM.
Anyone got an idea on how to proceed?

lg g3
Palaryel said:
My LG G3 is running on stock Android 6 Marshmallow, version V30b-EUR-XX, using custom recovery (TWRP), rooted.
The phone is network locked to my carrier. I got a network unlock code (NCK), however, when I enter the unlock menu (2945#*855#) and go to network unlock option, enter the code I get a "SIM network unlock request unsuccessful" error and the attempt counter does NOT go up (always staying on 1/10).
From that I concluded that the phone isn't even trying to unlock the SIM.
Anyone got an idea on how to proceed?
Click to expand...
Click to collapse
whta is the exact model no of ur lg g3

kalpesh patil said:
whta is the exact model no of ur lg g3
Click to expand...
Click to collapse
LG-D855

lg g3
Palaryel said:
LG-D855
Click to expand...
Click to collapse
before updating 6.0 network was working or not??
or it was locked before purchase

kalpesh patil said:
before updating 6.0 network was working or not??
or it was locked before purchase
Click to expand...
Click to collapse
Bought it on contract from carrier, was locked when I got it. Note that I got my unlock code from the carrier, its valid. I also went ahead a bought a key online from a website selling unlock keys. Got the same key as the one from carrier (wanted to confirm the key is indeed the correct one).

lg g3
Palaryel said:
Bought it on contract from carrier, was locked when I got it.
Click to expand...
Click to collapse
bro i will solve ur issue through teamviewer just msg me on my whatsapp no +917744894155

Msging you now
Sent from my LG-D855 using Tapatalk

Solved issue myself now, reflashed clean stock .kdz, it worked after (the issue was probably the custom recovery or the permissive kernel I think)!

Trying to unlock my Samsung S8+ with pre-installed T-Mobile device unlock app

Dear Friends,
I have Samsung S8+ with Device Unlock App for T-Mobile USA,
Its not stolen or reported black list however when i enter the IMEI on the T-Mobile official web site its status is blocked.
Regarding this issue if i will use a service my phone can be unlocked.
One more thing i have tried to change the firmware to G955U1 and i succeeded.
every time i enter the home screen this message "enter the network unlocking code" prompts out,i already ordered unlock code and inserted then it said:network unlocked successfully however its still locked on tmobile,i dont know what to do next regarding these givens above if any one have a solution for my issue indeed i need your help.
Thank you all
Thanks and many regards

Magika10 said:
Dear Friends,
I have Samsung S8+ with Device Unlock App for T-Mobile USA,
Its not stolen or reported black list however when i enter the IMEI on the T-Mobile official web site its status is blocked.
Regarding this issue if i will use a service my phone can be unlocked.
One more thing i have tried to change the firmware to G955U1 and i succeeded.
every time i enter the home screen this message "enter the network unlocking code" prompts out,i already ordered unlock code and inserted then it said:network unlocked successfully however its still locked on tmobile,i dont know what to do next regarding these givens above if any one have a solution for my issue indeed i need your help.
Thank you all
Thanks and many regards
Click to expand...
Click to collapse
If the T-Mobile site says it's blocked, then it is blacklisted. Sorry, it won't work on any network. You need to call T-Mobile and ask why it's blocked.
And the only way to network unlock the T-Mobile S8/+ is with the T-Mobile unlock app. Flashing the unlocked firmware and then entering an unlock code won't work. T-Mobile has to be the one to unlock it, and it has to be initiated through the app.

Mr. Orange 645 said:
If the T-Mobile site says it's blocked, then it is blacklisted. Sorry, it won't work on any network. You need to call T-Mobile and ask why it's blocked.
And the only way to network unlock the T-Mobile S8/+ is with the T-Mobile unlock app. Flashing the unlocked firmware and then entering an unlock code won't work. T-Mobile has to be the one to unlock it, and it has to be initiated through the app.
Click to expand...
Click to collapse
Sorry but now TMB can be unlocked through reading codes no need for unlock app, plus if the imei is blacklisted @ TMB so it is blocked for TMB only which means if he use AT&T sim after unlock it will definitely work !!!

instrumentaly said:
Sorry but now TMB can be unlocked through reading codes no need for unlock app, plus if the imei is blacklisted @ TMB so it is blocked for TMB only which means if he use AT&T sim after unlock it will definitely work !!!
Click to expand...
Click to collapse
That's absolutely false. If it's blacklisted through T-Mo, it's blacklisted for all US carriers.
And what's your source saying you can use unlock codes on T-Mo? Because no one here has been able to do that. Many people have lost money buying useless codes for T-Mobile.