If you have successful bluetooth connection then try to connect your phone first to the internet, from then it will just use the internet sharing of the i900, when you are in sync thru bluetooth it should work. when the phone is connected to the internet and with i900 internet sharing your computer or laptop can use i900 as the modem or use the internet connetion of the i900 to connect to the internet.

I am interested in buying cell phone online. But I do not know the phone can be used compatible with our mobile service. I am from USA.

Tri band phone is ok? I am freshman of this. I hope anyone can help me. And please kindly let me know the difference among qual band, triband and quad band. Thanks