<!-- from fixya rte -->How to unfreeze nokia lumia 520 2 - HCO 3-Way Car Socket Adapter Charger Splitter w 2 USB for Nokia Lumia 520

read this forum.... there are two or three different ways to solve it.
http://discussions.nokia.com/t5/Lumia/no-sound-from-my-nokia-lumia-720/td-p/1935826

Hello. To which network has your Nokia Lumia 520 been locked to.? You can get the unique unlock code for a Nokia Lumia 520 from Unlock-Zone.com at affordable cost. Good luck.

-<()>--<()>--<()>--<()>--<()>--<()>--<()>-
..............UNLOCKING INSTRUCTIONS..............
-<()>--<()>--<()>--<()>--<()>--<()>--<()>-

1 - Switch on your Nokia Lumia 520 without any sim card.
2 - Don't bother as to what is displayed on your Nokia Lumia 520.
3 - Compose #pw+CODE+1#.
4 - The Nokia Lumia 520 would then display the message "SIM Restriction Off" and will be unlocked!

Note :For Nokia Lumia 520 mobile phones locked to the network Fido or Rogers in Canada follow these instructions :
1 - Switch on your Nokia Lumia 520 without any sim card.
2 - Don't bother as to what is displayed on your Nokia Lumia 520.
3 - Compose #pw+CODE+7#.
4 - The Nokia Lumia 520 would then display the message "SIM Restriction Off" and will be unlocked!

The letter p appears if you press the button star(*) three times quickly
The letter w appears if you press the button star(*) four times quickly
The symbol + appears if you press the button star(*) two times quickly
The CODE you need to enter is the unique unlock code for your Nokia Lumia 520

SOURCE: MobileUnlockGuide.com

Your previous service provider, or one of the many shops that advertise it. if you hoping to get it free, the software to do it costs a lot of money, has to be paid for.

Hi. You can get the accurate unlock code for your network locked Nokia Lumia 520 either from the respective network provider or from trusted online vendors like MobileUnlockSolutions.com at affordable cost.

-<()>--<()>--<()>--<()>--<()>--<()>--<()>-
..............UNLOCKING INSTRUCTIONS..............
-<()>--<()>--<()>--<()>--<()>--<()>--<()>-

1 - Switch on your Nokia Lumia 520 without any sim card.
2 - Don't bother as to what is displayed on your Nokia Lumia 520.
3 - Compose #pw+CODE+1#.
4 - The Nokia Lumia 520 would then display the message "SIM Restriction Off" and will be unlocked!

Note :For Nokia Lumia 520 mobile phones locked to the network Fido or Rogers in Canada follow these instructions :
1 - Switch on your Nokia Lumia 520 without any sim card.
2 - Don't bother as to what is displayed on your Nokia Lumia 520.
3 - Compose #pw+CODE+7#.
4 - The Nokia Lumia 520 would then display the message "SIM Restriction Off" and will be unlocked!

The letter p appears if you press the button star(*) three times quickly
The letter w appears if you press the button star(*) four times quickly
The symbol + appears if you press the button star(*) two times quickly
The CODE you need to enter is the unique unlock code for your Nokia Lumia 520

Hi. You can unlock a Nokia Lumia 520 safer and easier using unlock code. You can get the accurate unlock code for your Nokia Lumia 520 either from your respective network provider or from any trusted vendor online like TheUnlockArena.com at affordable cost.

-<()>--<()>--<()>--<()>--<()>--<()>--<()>-
..............UNLOCKING INSTRUCTIONS..............
-<()>--<()>--<()>--<()>--<()>--<()>--<()>-

1 - Switch on your Nokia Lumia 520 without any sim card.
2 - Don't bother as to what is displayed on your Nokia Lumia 520.
3 - Compose #pw+CODE+1#.
4 - The Nokia Lumia 520 would then display the message "SIM Restriction Off" and will be unlocked!

Note :For Nokia Lumia 520 mobile phones locked to the network Fido or Rogers in Canada follow these instructions :
1 - Switch on your Nokia Lumia 520 without any sim card.
2 - Don't bother as to what is displayed on your Nokia Lumia 520.
3 - Compose #pw+CODE+7#.
4 - The Nokia Lumia 520 would then display the message "SIM Restriction Off" and will be unlocked!

The letter p appears if you press the button star(*) three times quickly
The letter w appears if you press the button star(*) four times quickly
The symbol + appears if you press the button star(*) two times quickly
The CODE you need to enter is the unique unlock code for your Nokia Lumia 520

See page 44 of the manual. You can download and "file/save" the manual to you documents folder. Click the blue words "Nokia Lumia 520 User Manual" here... http://www.manual-owner.com/nokia-lumia-520-user-manual.html

Try this Nokia page: Nokia Lumia 520 Personalize the start screen

You can do 3 things on Nokia Lumia 520
1) to use Data Sense (an windows app) to control your mobile data usage by limiting it to a certain level like 100MB a month or something.
2) to turn mobile data usage off on your phone, by going to Setting> Mobile Network then choose "off" option for Data Connection.
3) to contact your Mobile Network ISP & request a Data Connection deactivation.

I have seen a feature in older phones that you can see files received via bluetooth in settings>bluetooth>received files

THE AMOUNT OF PROBLEMS WITH THE NOKIA LUMIA 520 IS UNREAL.....DID YOU LET THE PHONE FINISH DOWNLOADING ALL ITS APPS OR YOU CAN GO INTO SETTING'S...