1, BIS is the abbreviation of blackberry internet service. Some special network applications of BlackBerry, such as "push mail", need this BIS service, which is provided by operators and should be turned on when using (it is expensive, not cheap).

2.9788 is a mobile customized BlackBerry model. The system has been installed at the time of purchase, and there is no need to brush the machine.

The version of 3.9788 system is 6.0.

4, this 9788 is ok! I yearn for it in my heart, and now I use the old 8320 ~ ~ (> _ <; )~~~~ 。

5. Learn more about the Blackberry Forum. It's very simple. Don't worry.