I'm having a problem with the proximity sensor. If I have the phone up to my cheek, screen stays on and buttons are pressed. This makes the phone useless. Basically I have an iPod Touch with instant messaging right now. Also, anyone having problems with the auto-dim feature? With auto-brightness on, the phone is always maximum brightness. It never dims in lowlight. Even if I completely cover the sensor, the brightness doesn't change. My old Blackberry was very nice with this feature. In dark the screen was dim so you don't loose night vision, and bright when the sun is out. This is my first iPhone, and so far I'm not impressed. Yeah it's cool that it can find the price of an item and show me where I am on a map, but if you market a phone, you need to be damn sure you get the "phone" part right before you move on to fancy features. If these things aren't/can't be fixed, then I'll just take it back and get an Android phone.