i got this blackberry phone and its those big ones. this style isn't the new one so i don't know how to work it. i already have my sim card inserted in it and whenever i want to call someone, the screen would say "only emergency calls only" and the phone has signal. Also, when someone tries to call that phone, it wouldn't ring or say anything. please help me, i spent a lot of money on this phone and now i cant use it anymore! so please help!