PUK's mymobil do not know.Where I get?Meanwhile, my phone mode is lg bl20 cell phone

You can buy the unlock code from ONLINE site,you can get the network unlock code from here Simpleunlocking.com
and get the Security unlock codes from service provider.

Enter PUK code get it from service provider

Hi, To get PUK code please contact your service provider.they will provide you the defaultPUK so that you can open your phone. While you get the PUK code ,the serviceprovider customer care officer will askfor your personal details to checkwhether the mobile belongs to you only.If they are satisfied with your answers they will providewith the PUK code Note: if you keep entering random/unknown numbers/codes, the sim card will be lockedand will be rejected. It'll not beusable anymore. If you need further help, let me know. Good Luck. Thanks for using FixYa.

Follow this link to download a user manual for your phone:
http://mymobile.three.co.uk:8080/mymobile/LG/KC910Renoir/img/kc910userguide.pdf
If this helps, please rate. Thank you

you can change it in language settings

flash the phone vis usb, or do a factory reset you will however loose all you data, you can flash phone by using the software tht came with the phone.

here you go, its in pdf format

http://mymobile.three.co.uk:8080/mymobile/LG/KC910Renoir/img/kc910userguide.pdf

It's 100% safe, 100% accurate and backed by money backguarantee.

Hope this will help.
Thanks.

Answer:
A PUK code (Pin Unlock Key) is required when you enter an incorrect PIN 3 times. After entering the wrong PIN 3 times, the card will be locked and you will need to get a PUK code from your service provider to unlock it.

If you have AT&T ;

Sorry to inform you but it sound like your SIM is now locked .. Here is some info to help.

please take the time to review my advice and be kind and leave a feedback rating it helps me too.

You can receive your phone's PUK code from AT&T, either by logging into your account at myWireless Account, visiting our Technical Support Chat, or by calling Customer Care at 1-800-331-0500.

Once your PUK has been received, it will need to be entered into your phone to set a new PIN code.

If the wrong PUK code is entered ten times in a row, the SIM card becomes invalid and you will need to purchase a new SIM Card. The phone will display "PUK blocked call operator".

You can unlock LG BL20 chocolate at http://www.fastgsm.com/en/lg/lg/bl20-chocolate/unlock-code-usim-locked