Originally Posted by amandayoung3880
hi can sum1 help me with my bb8520 im having problems with my sim its on 3network it worked first when i put it in then i took it out and cannot get a signal i have tried another 3 sim card but the same thing happens with that so i tried a virgin sim card an d that works fine
It is extremely rude to ask unrelated questions in another person's thread.
To answer your question, a 3 SIM card will not work in an 8520 as it is not a 3G device. You will need a 9000 or 9700 and a BlackBerry service plan from 3 in order to use BlackBerry.