How to unlock tablet for sim. PLEASE HELP ME!

[erikasas]

Hello, I received a gift Sony tablet z4. Then i turn on, requests the sim code. So please tell me , how to Unlock tablet ??? Tablet lock for Organe!

 

[jelbo]

Hello, I received a gift Sony tablet z4. Then i turn on, requests the sim code. So please tell me , how to Unlock tablet ??? Tablet lock for Organe!

If your own SIM is inserted it would be your own PIN code? If you never changed that, it would be 0000?

If it's SIM locked, I don't know how devices react to unaccepted SIM cards...