Originally Posted by adperdue
First of all, it is perfectly legal to unlock your BlackBerry.
Second, you will need to contact an unlocking service if you do not have a good standing with AT&T, which owns GoPhone, however, if you do, call AT&T and tell them you wish to unlock your Berry for use overseas, or so that you can have the option to sell it to someone in another country. They should immediatly help you unlock it.
It also sounds as if you hardware may be starting to give up, or you did not perform a complete wipe before reloading the OS. Use BBSAK (Blackberry Swiss Army Knife) to perform a complete wipe, if it does not cure your ills, it may be time for a new Berry.
Posted via BlackBerryForums.com Mobile
No, the blackberry won't accept the sim, it works with other sim cards, just not this one.