hey im new to this so dont know how it really works but ive got a problem.. i lost my blackberry several weeks ago and typical me it wasnt charged fully so the battery would have died. so i contacted 02 and they sent me a knew phone on my insurance. i am selling my car and came across the lost phone. I am giving it to my young sister. so i got it unlocked for her but it wont let her ring out or do anything regarding the signal.. any ideas what is wrong?? would be grateful... rose

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