Does anybody is good at using blackberry? I bought one, and would like to extend its function usage, which can be chating and checking email etc.

For bbm and instant email you need to get blackberry service from mobile provider. But this option is not available in China yet. I think its available in Guangzhou only at this time.

Do you mean China Mobile Guangzhou, Mahmoud?

Yes I think so. It's China Mobile Guangzhou

Appreciated your advice, Mahmoud:-)