i'm with T-Mobile under the 9.99 internet plan.

basically,the problem is that my N900 keeps dropping on me, and i lose all connectivity until it jumps back up to 3.5G. in 3G, i cannot connect to any website at all. 2.5G works though. hardware issue?

plus i cannot make or receive calls in 3G mode after the battery meter drops below 50%. i get a "Connection Error" message, so i have to dial it back down to 2G to make or receive calls