How to unlock backup code samsung gt s5301?

— To recover the backup PIN, press the Power button and activate Data connection,...

— The backup pin is the number you have set yourself. There is no default PIN...

— If you cannot install this application in your phone it means that the phone is...

— The only way at this time to unlock the phone is through the hard reset. This...

— To unlock the phone, simply press the Power button for a few seconds until the...

— To send the email with the PIN backup, press Power button to turn on the screen...