I require help with this, also. I can't do **** with my Streak. If I'm home, it will connect fine, usually, and my Wi-Fi works. I take it out with me, and I can't make calls, search the net, or whatever else. Even now, mind, I have the Wifi turned on, and it has connected to my internet, but there is no phone signal, so I cannot make calls, which is like the above poster. Sometimes Airplane mode will turn itself on also. I never had a problem on 1.6. I haven't contacted o2 yet, because I'd like to see if anything can be done here.