vB Easy Archive - Unlocked ATT 8300

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Unlocked ATT 8300 - Issues on T-Mobile
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Posted by: ptothec

I had an 8300 through AT&T. I called them and unlocked it. I then "reset it" using the hard reset function on the phone. I gave it to friend who has T-mobile, but when we put the sim card in and fire it up, it says INVALID SIM.

anyone else had this problem, or any suggestion on how to fix it. I am wondering if the "hard reset" re-locked it or something? My AT&T sim works fine on the phone.

Any help appreciated...

Posted by: NJBlackBerry

No, resetting a phone doesn't relock it.
Are you 100% sure that it is unlocked.

Posted by: ptothec

I called AT&T, got the unlock code from them, and entered it. Is there some command i can type in order to check if it is still locked?

Posted by: penpower

http://www.mobile2mobile.net/Unlock...blackberry.html

Posted by: rambo47

"Invalid SIM" means it's not unlocked. Either that or your buddy's SIM is so old the Blackberry doesn't recognize it. I hesitate to even mention it, but if the SIM is put in wrong you might get this message as well.

Posted by: ptothec

Figured it out. I called ATT back, and got the unlock code from them again (they already had it). Re-entered it, and voila, the sim card works fine.

I know for a fact that when I typed it in the first time, while on the phone with AT&T, that it unlocked the phone. She even had me check that menu that shows where it is unlocked.

My only theory can be that when I "reset the phone to default settings", it somehow tripped it back to being locked. Regardless, the important thing is that it is fixed.

thanks for the help