Sony V600 Manual De Usuario

Possible cause: The phone is locked.

Solution: To unlock the phone, 

Possible cause: The phone lock code is required.

Solution: Enter the phone lock code. Your phone comes with the default phone lock 
code 0000. You can change it to any four- to eight-digit code. 

Possible cause: You entered your personal unblocking key code (PUK) incorrectly 
10 times in a row.

Solution: Contact your network operator.

Possible cause: The battery that you are using is not a battery approved by 
Sony Ericsson.

Solution: 

%168 Battery use and care.