phone has locked again

[AC Question]

hi i got my phone unlocked about 3 months ago, it has locked again, the phone is a samsung s3

 

[Golfdriver97]

You mean carrier locked, or locked bootloader?

 

[Rukbat]

Or locked screen? Or the phone doesn't turn on? Or ... ("Locked" can mean many things. If you're more specific, we can help you better.)