Develop Bugs

[Q] Repeated "network unlock request unsuccessful" message even after unlocking

[Q] Repeated "network unlock request unsuccessful" message even after unlocking
[Note, I do not have root (it caused too many weird glitches and I missed OTA updates).]
I have the Samsung Galaxy Nexus GSM originally locked to O2 UK. Months ago they provided me an unlock code and unfreeze code. When I entered it, the phone unlocked. But often, when changing SIM cards, I'd need to enter the code again. No big deal.
A few months ago it took several reboots and inserting the original SIM before the phone would unlock, but randomly it did.
Now I am stuck overseas, and have been trying for 2 days to unlock this piece of ****. The exact same code will not work. The unfreeze code will not work. I even just paid $25 to an unlock website, and the just sent me the same codes, so the codes are definitely right.
I have tried all of the unlocking instructions in their email. Nothing is working.
None of these instructions work. No network unlock screen appears. I believe this feature does not work with this phone:
Code:
Method #2 Go to the dial screen on your phone as if you are going to make a call and press: #7465625*638*UNLOCKCODE# (8 digit unlock code)
OR
Method #3 Go to the dial screen on your phone as if you are going to make a call and press: #0111*UNLOCKCODE# (8 digit unlock code)
OR
Method #4 Go to the dial screen on your phone as if you are going to make a call and press #7465625*638*# Once prompted for code, enter the 8 digit Unlock Code.
When I insert a non-compatible SIM card, it asks me for the unlock code, then says "Network unlock request unsuccessful". If I try the unfreeze code, it gives the same message. Then I try the network unlock code again and it gives the same message again.
I have tried everything in the email they sent me, but nothing works.
I refuse to format my phone for this! I have so many settings that would be lost.
Is there anything you can do to help me get this working, or explain to me the correct digits to dial in the dialer to get the mysterious "network unlock screen" to appear? I repeat, the digits above such as #7465625*638*UNLOCKCODE# do not work.

CJSnet said:
[Note, I do not have root (it caused too many weird glitches and I missed OTA updates).]
I have the Samsung Galaxy Nexus GSM originally locked to O2 UK. Months ago they provided me an unlock code and unfreeze code. When I entered it, the phone unlocked. But often, when changing SIM cards, I'd need to enter the code again. No big deal.
A few months ago it took several reboots and inserting the original SIM before the phone would unlock, but randomly it did.
Now I am stuck overseas, and have been trying for 2 days to unlock this piece of ****. The exact same code will not work. The unfreeze code will not work. I even just paid $25 to an unlock website, and the just sent me the same codes, so the codes are definitely right.
I have tried all of the unlocking instructions in their email. Nothing is working.
None of these instructions work. No network unlock screen appears. I believe this feature does not work with this phone:
Code:
Method #2 Go to the dial screen on your phone as if you are going to make a call and press: #7465625*638*UNLOCKCODE# (8 digit unlock code)
OR
Method #3 Go to the dial screen on your phone as if you are going to make a call and press: #0111*UNLOCKCODE# (8 digit unlock code)
OR
Method #4 Go to the dial screen on your phone as if you are going to make a call and press #7465625*638*# Once prompted for code, enter the 8 digit Unlock Code.
When I insert a non-compatible SIM card, it asks me for the unlock code, then says "Network unlock request unsuccessful". If I try the unfreeze code, it gives the same message. Then I try the network unlock code again and it gives the same message again.
I have tried everything in the email they sent me, but nothing works.
I refuse to format my phone for this! I have so many settings that would be lost.
Is there anything you can do to help me get this working, or explain to me the correct digits to dial in the dialer to get the mysterious "network unlock screen" to appear? I repeat, the digits above such as #7465625*638*UNLOCKCODE# do not work.
Click to expand...
Click to collapse
leave me a pm message, include your google id in it, and your model number (eg sgh-t654, gt-b5310 etc)

Thanks. May I ask why?
Sent from my Galaxy Nexus using Tapatalk 2

CJSnet said:
Thanks. May I ask why?
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
thought i could help you unlock it directly without need for unlock code, but just found out it needs more than just a usb cable. I am helping out other guys via remote usb connection.
In your case, I cant really help coz ur phone is new on the playground so it needs sophisticated methods to direct unlock it.

Can't Unlock from Rogers: Invalid MMI

I'm trying to unlock my Rogers SGS3, so I can pick up a paygo card while down in the U.S later this month. I purchased and received my unlock code through CellUnlocker.net yesterday.
However, no matter what I do I can't get any of the dial codes they give to work. They all result in "Connection problem or invalid MMI code." errors.
I've tried reverting to a backup of my rooted Rogers stock ROM, as other threads I've seen suggest that dial codes don't work on AOSP-based ROMs, but the results are still the same. *#06# works to retrieve my IMEI (worked under Jellybam 3.3.0 as well), and *#0011# works to bring up the Service Mode menu.
However, all the codes given by CellUnlocker.net in their email don't:
Different phones have different Unlock Code Input Instructions, Try the following Instructions in Order:
Method #1 Insert a Non accepted simcard in your phone and power on. Once finished loading your phone will ask you to enter a code, enter the Unlock Code
Note: Non Accepted Simcard is any simcard not from the original provider
Method #2 Go to the dial screen on your phone as if you are going to make a call and press: #7465625*638*UNLOCKCODE# (8 digit unlock code)
Method #3 Go to the dial screen on your phone as if you are going to make a call and press: #0111*UNLOCKCODE# (8 digit unlock code)
Method #4 Go to the dial screen on your phone as if you are going to make a call and press #7465625*638*# Once prompted for code, enter the 8 digit Unlock Code.
If Phone says, "Code Accepted" or "Network Unlock Successful" or "Not Yet Personalized" your phone is fully Unlocked
--------------------------------------------
How do I know my Phone's Network is Fully Unlocked?
Go to the dial screen on your phone, and press *#7465625#
A menu will be displayed that will resemble the following...
1. [ ] Network lock
2. [ ] Subset lock
3. [ ] SP lock
If everything if OFF, then your phone is fully unlocked.
Click to expand...
Click to collapse
I haven't yet tried inserting a non-Rogers SIM card, because I don't know anyone with a phone that uses micro-SIMs. I'm also a bit wary to go and spend $20 on a Roam Mobility SIM card if I'm not going to be able to get it to work.
Any idea what might be the issue?
To verify that I am indeed running a stock ROM (as I restored from a backup I had labelled "Stock"):
Android version: 4.1.1
Baseband version: I747MVLDLK4
Kernel version: 3.0.31-538866
Build number: JRO03L.I747MVLDLK4

I believe you can't unlock without a different sim card.
Sent from my SGH-I747 using xda app-developers app

Yeah. You're gonna need another SIM. Stop by a T-Mobile store & ask them politely. They will probably let you use one.
Sent from my Galaxy S3

Thanks for the comments. I went and picked up a Roam Mobility SIM card at lunch, and putting it in I was prompted to enter my unlock code.
All seems to be working now.

Just search around here there is a free way to unlock your phone. Lots of people have done it successfully
Sent from my SGH-I747M using xda premium

[Q] Samsung S3 unlock code error (cyanogenmod)

Hi I am trying to unlock samsung s3 for friend, it has this cyanogenmod on the phone. I have ordered all level codes for it network, defreeze, provider, subprovider. I tried both the defreeze code and network code. they are not working and everytime I am getting unsuccessful unlock message. Anybody know how to unlock it. thanks

ak.89 said:
Hi I am trying to unlock samsung s3 for friend, it has this cyanogenmod on the phone. I have ordered all level codes for it network, defreeze, provider, subprovider. I tried both the defreeze code and network code. they are not working and everytime I am getting unsuccessful unlock message. Anybody know how to unlock it. thanks
Click to expand...
Click to collapse
Do a factory reset insert the unfreeze code,will say unsuccessful but is ok,then insert the unlock and should accept it.If still not working do a backup of your current rom and flash the stock firmware and try the codes again

[Q] SIM Unlock Code From T-Mobile Not Working For T999L

I requested and received a SIM Unlock Code From T-Mobile for my S3 T999L (LTE version). However it does not work. I have tried 4 times. Questions:
1. Could it be possible that the code is correct but the "PERSO SHA256" setting is set to OFF? That's the setting from the *#197328640# ServiceMode trick. I did try to unlock the phone using *#197328640# unsuccessfully. I read somewhere on the internet that it should be ON to unlock using SIM code. Are these two really related?
2. How many more times do I have to enter the SIM code before it is permanently locked?

Need help unlocking

I need to unlock my wife's S3 and I got the unlock code from AT&T but when I try to do it, it says unsuccessful. The phone is completely stock not even rooted. Can anyone help cause AT&T is useless?

Does the imei match the imei on the phone's printed label?

Yes it does

When you insert a non-ATT sim, you get the prompt to enter the unlock code? If you do and you enter the code provided by ATT based on the phone's imei, sounds like ATT may have given you the wrong code.

audit13 said:
When you insert a non-ATT sim, you get the prompt to enter the unlock code? If you do and you enter the code provided by ATT based on the phone's imei, sounds like ATT may have given you the wrong code.
Click to expand...
Click to collapse
Yes then it gives me and sim unlock unsuccessful. I am getting sick and tired of sitting on hold with them

I'm not sure if the s3 gives you a limited number of tries to unlock it but I would not attempt more than 2 attempts each day.
I assume you confirmed the imei # with ATT? Is it possible the phone is hard-locked to ATT? Did ATT give you any other codes such as unfreeze codes, PUKs, etc.?

i know you said stock , unrooted. dont you have to be on 4.1.1 to unlock? prob. are, just asking.
err on the side of kindness

What ROM is on your phone? If it is 4.1.1 or 4.1.2, you could try using the free unlock method.

I'm having the same problem here. Received a code from AT&T on Oct 26th and they're still trying to figure out why it doesn't work. Bought the locked phone at BestBuy and never touched it until I tried to use the code they gave me.

ninaviana said:
I'm having the same problem here. Received a code from AT&T on Oct 26th and they're still trying to figure out why it doesn't work. Bought the locked phone at BestBuy and never touched it until I tried to use the code they gave me.
Click to expand...
Click to collapse
What ROM version is on your phone?

audit13 said:
What ROM version is on your phone?
Click to expand...
Click to collapse
I have no idea what that is. The phone runs on Android 4.3 if that helps.

ninaviana said:
I have no idea what that is. The phone runs on Android 4.3 if that helps.
Click to expand...
Click to collapse
If you were on 4.1.1 or 4.1.2 and the code didn't work, you could revert back to stock 4.1.1 and unlock the phone for free. Since you're on 4.3, you can only unlock the phone with an unlock code. Seems strange that the unlock code doesn't work. Did you confirm you phone imei and the imei you submitted to ATT?

audit13 said:
If you were on 4.1.1 or 4.1.2 and the code didn't work, you could revert back to stock 4.1.1 and unlock the phone for free. Since you're on 4.3, you can only unlock the phone with an unlock code. Seems strange that the unlock code doesn't work. Did you confirm you phone imei and the imei you submitted to ATT?
Click to expand...
Click to collapse
Yes, I checked everything. Today I spent almost an hour on the phone with them trying to figure out the problem. They even called Samsung and they didn't know what was wrong either.

ninaviana said:
Yes, I checked everything. Today I spent almost an hour on the phone with them trying to figure out the problem. They even called Samsung and they didn't know what was wrong either.
Click to expand...
Click to collapse
Is it possible that the phone has become hard-locked to ATT due to too many unsuccessful unlocking attempts?

audit13 said:
Is it possible that the phone has become hard-locked to ATT due to too many unsuccessful unlocking attempts?
Click to expand...
Click to collapse
I read that the phone displays a message when that happens, and none has been presented so far... It always asks me for the network unlock code.

Problem solved
To whoever is going through the same trouble. This is not the "unlock it for free" method, for you will need to insert the unlock code
For Samsung Galaxy S3, S4 and Note 2. Device must be updated to the latest firmware.
Phone MUST prompt for the code. This is the "release method" on the phone(s).
a. Go to the Dial pad and dial *#197328640#
b. Click on number [1] UMTS > [1] Debugging screen > [8] Phone Control > [6] NETWORK LOCK
c. You will see 3 options. Click on number [1] Perso Sha256 INFO, the screen will change slightly
e. Hit the MENU button then when the menu pops up carefully hit BACK to return to the previous screen
f. Click on number [2] Perso Sha256 ON, the screen will change again to a one line message
g. Restart the phone on the screen by holding the power button and click RESTART
h. When the phone prompts for the unlock code simply enter the unlock code
END