This is a nice device for regular users.

I got an AT&T device and use it for T-Mobile services. I used Unlock Cell Phone : Cell Phone Unlocking : Unlocked Cell Phone Service unlock services. The unlocked cost is only $9.95 and I received the unlocked code within 1 minute after I submit my blackberry information. With its simple instruction, I unlock my blackerry with in another minutes (never did before). Great device and services.

I will traval to Asia (mainly in China) in the beginning of next year. Anyone know if I can use this device in China (buy a sim card for both phone and data services) since I already unlock it?

Device can be used world round, especially with it being unlocked, you will enjoy the device just do your regular updates and such.

To get data on the Chinese SIM, you will need to cancel your BB data with T-mobile. You can only have one BIS account active at one time