If you got a blackberry phone without activated BIS or don't want to use BIS but want to access internet on blackberry then follow is instruction for guide how to use gprs on blackberry without activated BIS
First all you need is to setting up APN for this go to advance settings and setup apn
write following command in apn
for ufone : ufone.pinternet
for zong : zonginternet
for warid : wap.warid
for telenor : internet
for mobilink indigo : connect.mobilinkworld.com
for mobilink jazz : jazzconnect.mobilinkworld.com
after setup apn restart your phone then you will be able to access internet on your blackberry via third party applications like opera ucweb
some applications who need BIS service book may not work for example push mail and blackberry data browser google talk etc but you can still use blackberry data browser via wifi