Develop Bugs

Default unlock SIM

I just got my new S3. Does anyone know what is the default unlock SIM PIN? I wanted to change the PIN no. So that I can lock the SIM card.
Thank you
Sent from my SGH-T999 using xda app-developers app

leesanhua said:
I just got my new S3. Does anyone know what is the default unlock SIM PIN? I wanted to change the PIN no. So that I can lock the SIM card.
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The default sim pin for AT&T is "1111", I'm not sure if they would be the same, but I don't see why they would be different...

mr2gobyby said:
The default sim pin for AT&T is "1111", I'm not sure if they would be the same, but I don't see why they would be different...
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But im on T-Mobile. Are they going to be the same?

leesanhua said:
But im on T-Mobile. Are they going to be the same?
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Just call T-mobile, they will give it to you.

Called. She has to put me in hold for like 4 times and then come back to me and ask why do I need the default unlock SIM no.
Are you kidding me?!
Sent from my SGH-T999 using xda app-developers app

Correct me if I'm wrong, when you lock the sim, don't YOU enter the pin code yourself?

leesanhua said:
I just got my new S3. Does anyone know what is the default unlock SIM PIN? I wanted to change the PIN no. So that I can lock the SIM card.
Thank you
Sent from my SGH-T999 using xda app-developers app
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1. Are you trying to unlock your SIM to be able to use your phone with other carriers or
2. are you trying to change SIM PIN code which is not really unlocking. BTW, if i'm not mistaken there 2 PINs for SIM
If the answer is #1, then this will help you http://forum.xda-developers.com/showthread.php?t=1820253
if #2, then I have no idea, nor do i understand why you need it

I want to have personal PIN for my SIM CARD. If someone steal my phone they won't be able to make phone call from my account after they restart the phone.
Thanks guys. I already got the default PIN no.
Sent from my SGH-T999 using xda app-developers app

leesanhua said:
If someone steal my phone they won't be able to make phone call from my account after they restart the phone.
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Or you can just call t-mobile and ask them to temporary suspend your line cuz your phone was lost/stolen

Does anyone know where to find video call option in S3 it's not present in the dialer.
Sent from xda.

default t-mobile sim PIN
I was under the impression at first that the "Set up SIM card LOCK" related to the locked status of the device as it related to using other carriers SIMs. Then I come to find out, it really related to the PIN code on the SIM card. I did some research, and the default PIN is not the same as the UNLOCK code T-Mobile sends people for unlocking the devices for travel/etc. It is a separate code for password protection on the SIM: 1234
Enter this, and you can then change the PIN to whatever you want. This code is like a password to use the SIM card itself so no one else can use it or your service without the code on their phone. You can also store your address book/etc on the SIM that cannot be accessed without the PIN.
If anyone else looks this up, here are the default codes for AT&T and T-Mobile again:
AT&T GSM SIM PIN default code: 1111
T-Mobile GSM SIM PIN default code: 1234
Verizon GSM SIM PIN default code: 1111
edit: after further research, you may be aware that if your phone code blocked due to entry of wrong PIN too many times, and you requested the PUK code to fix it, the default SIM PIN may be reset to 0000 or another code. That is what the Verizon instructions page says. I hear after entering the carrier provided PUK code, it unlocks the SIM, too. IDK if the default SIM PIN remains 1111/1234 or changes after that. Just be aware it might if you can't get it to work.
Depending on the device, some devices password protect the SIM code lock screen with a Security code, which is '0000' such as the LG Encore. Just look up the respective guide in Google about this before getting stuck entering the wrong code on the wrong screen. For Android devices, you will go to "Settings->Security->Sim code lock->Set up SIM card lock->Tap Lock SIM card/Enter PIN to use device" without being hassled by this Security code - it is a unchecked box until you enter the above code. Then after entering it, it becomes checked. And you can then tap "Change SIM PIN" below. Good luck, and don't forget this code.
If you run into trouble, contact your carrier for PUK unlock issues, etc. The phone sometimes becomes locked when you enter the wrong PIN too many times when trying to figure this out. The PUK code can only be given by your carrier to unlock it if the security mode kicks in and blocks you.

My phone recently got locked in puk mode. When i took it to T-Mobile the lady reset it and told me thre new code was something like 1001 or 1101. So i need to know if anyone knows the basic sim pin codes they would use?

Aren't puk codes unique to a SIM card?

Samsung Galaxy S2X Telus (aka Hercules) - unlock issue

I just bought a refreshed s2x from telus. when i put *#simlock#, it says network lock is OFF.
However, if i pop in rogers sim card or its partners, it says insert sim it asks for network lock control key. No pad lock..just the code text box, unlock or dismiss.
is my phone unlocked already by previous buyer?
is he failed several times, therefore it requires a freeze code?
there will be no refunds from the unlock code sellers, if the network code is unsuccessful. refunds only for wrong code error.
thank you!

Problem solved..worked with the unlock code..not to worry about network lock OFF.

3rsaku said:
Problem solved..worked with the unlock code..not to worry about network lock OFF.
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Could you please tell me how you have solve "network control key" problem ? I am facing the same issue. My network is unlocked but still it is asking "network control key". I am having samsung s2x onl

[Q] Unlocked Xperia Play doesn't connect to gsm and internet

Hi:
I live in Bangladesh, South Asia. I have a Xperia Play sent from USA (R800AT) which is both root and sim unlocked. When I entered a sim of a Bangladeshi network, the network bar shows the carrier name for a while and went to "temporary calls only" after a few seconds. Then I tried to connect to the carrier by selecting the network from a list of mobile carrier, it replied "You sim does not allow a connection to this network". I replaced the sim with another few sims and it resulted the same. However, these sims are working well in other devices. I also tried to connect to internet by putting the APN details but could not establish a connection.
I tried to connect to internet through WiFi, I was able to get connected with WiFis but failed to connect to internet. All the apps (youtube, maps, browser etc.) replied "This application requires a valid data connection".
Could someone please help me in this? Many thanks in advance.

shehid said:
Hi:
I live in Bangladesh, South Asia. I have a Xperia Play sent from USA (R800AT) which is both root and sim unlocked. When I entered a sim of a Bangladeshi network, the network bar shows the carrier name for a while and went to "temporary calls only" after a few seconds. Then I tried to connect to the carrier by selecting the network from a list of mobile carrier, it replied "You sim does not allow a connection to this network". I replaced the sim with another few sims and it resulted the same. However, these sims are working well in other devices. I also tried to connect to internet by putting the APN details but could not establish a connection.
I tried to connect to internet through WiFi, I was able to get connected with WiFis but failed to connect to internet. All the apps (youtube, maps, browser etc.) replied "This application requires a valid data connection".
Could someone please help me in this? Many thanks in advance.
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The R800at is carrier locked. You need to unlock it which requires you to pay someone to unlock it for you. Basically with carrier locked device such as R800at will only with at&t in the USA.

Thanks for your prompt reply. I didn't get one thing how is carrier lock different from network/sim lock? In the sim lock menu of the service infor main menu, it says as follows:
[] Network 5
[] Network subset 5
[] Service provider 5
[] Corporate 5
[] Sim 0
So far I have understood from what I read over internet that a blank parentheses [] shows that it's unlocked and [x] means locked.
I would appreciate your comments on this. Thanks in advance for educating me on this.

shehid said:
Thanks for your prompt reply. I didn't get one thing how is carrier lock different from network/sim lock? In the sim lock menu of the service infor main menu, it says as follows:
[] Network 5
[] Network subset 5
[] Service provider 5
[] Corporate 5
[] Sim 0
So far I have understood from what I read over internet that a blank parentheses [] shows that it's unlocked and [x] means locked.
I would appreciate your comments on this. Thanks in advance for educating me on this.
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Im sorry what i meant for carrier locked is the same as sim locked.

[Q] AT$QCBANDPREF returns error on AT&T Galaxy-S3-i747

Hi,
I bought from AT&T (USA) a Galaxy-S3-i747.
I'd like to set it to WCDMA Bands 2,4,5, which is supports.
I sent it AT$QCBANDPREF=1,"28,30,31" but it returns ERROR.
I also tried sending it AT$QCBANDPREF=0,"28,30,31" but I still got ERROR.
I also tried AT$QCBANDPREF=0,"31" and still got ERROR.
When I tried via its screen to set it to specific WCDMA band, using *#197328640# I got "option restricted".
I'd appreciate your help how to overcome this problem.
Thank you very much.

GS3mate said:
Hi,
I bought from AT&T (USA) a Galaxy-S3-i747.
I'd like to set it to WCDMA Bands 2,4,5, which is supports.
I sent it AT$QCBANDPREF=1,"28,30,31" but it returns ERROR.
I also tried sending it AT$QCBANDPREF=0,"28,30,31" but I still got ERROR.
I also tried AT$QCBANDPREF=0,"31" and still got ERROR.
When I tried via its screen to set it to specific WCDMA band, using *#197328640# I got "option restricted".
I'd appreciate your help how to overcome this problem.
Thank you very much.
Click to expand...
Click to collapse
Try this -
*#197328640#
UTMS
DEBUG SCREEN
PHONE CONTROL
NETWORK LOCK
RAT_FREE_SUPPORTING ON
Wait a second, and then go to
NETWORK CONTROL
BAND SELECTION
WCDMA Band Preference
Then pick your band
I found that selecting certain bands will not do anything... you will notice the (*) next to the band selection stays on the option you previously selected.
If you need more help reply here... I'm actually documenting the entire Service Mode so i can fix a 4G problem I'm having.

[Q] selected network not available

Hi guys, please I need your help. I buy a galaxy note II (second hand) and I inserted my sim chip, after that I did calls and visite web sites with data 3G. but after update to android 4.3 my cell not getting network it continusly sayin the selected network not available
When I try register my device in the cell network, aperar a message that says :" divice registered" but When I go bak to do a call, the message still appear "Not Service, network selected (AIRTEL) not available
plllzz plzzzz can anyone help me on this

braveguy95 said:
Hi guys, please I need your help. I buy a galaxy note II (second hand) and I inserted my sim chip, after that I did calls and visite web sites with data 3G. but after update to android 4.3 my cell not getting network it continusly sayin the selected network not available
When I try register my device in the cell network, aperar a message that says :" divice registered" but When I go bak to do a call, the message still appear "Not Service, network selected (AIRTEL) not available
plllzz plzzzz can anyone help me on this
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did you solve it? I'm having same problem and I still haven't found a way.

carlos_a24 said:
did you solve it? I'm having same problem and I still haven't found a way.
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solution for ur problem is here http://forum.xda-developers.com/showpost.php?p=51979587&postcount=23064

Hi guys. My mother gave me a samsung note 2 but i cant use it because it has a message that selected network not available. But it has a full signal and everytime i tried to call or message its not available

Alyssa Mae Maceda said:
Hi guys. My mother gave me a samsung note 2 but i cant use it because it has a message that selected network not available. But it has a full signal and everytime i tried to call or message its not available
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What is the model #? Which ROM is it running? Tried a factory reset?