I'm not sure if this is normal. I have an iPhone 3G with no data plan. WIFI only. When the phone automatically locks, does it shut off the wifi? I find that immediately it is still connected, but after a few minutes when I check it, it's off and takes a few seconds to reconnect. Secondly, I have mail setup (no fetch, IMAP). When I go to mail sometimes, it just hangs on the "checking mail" screen until I have to turn off WIFI, then go back to mail so it knows it can't connect. Then I turn WIFI back on and it finally checks it. Is anyone else having these problems?