I love mine, even happier once I got my free bumper but I never had any dropped calls before that, just had the bars drop. I can use it heavily and still have it last a day which I wasn't able to do with other smartphones I've had. It's my first iPhone as I've always been put off with it lacking something I considered essential, but even coming from a Palm Pre I haven't missed the "true" multi-tasking like I thought I might, and the Apps that have been updated specifically for iPhone 4 are fantastic.