Any one Knows how to unlock a circket mobile phone

If you keep your phone it has to be paid now because Fido gave you a rebate on your phone only because you pay it through your plan. With Fizz you need to bring your own device...

Locked phone.

That's a tough one. The fact it can work for a while does not actually rule out a problem with your phone, as network tech is adaptive and intelligent these days so it could be...