I've had zero. And yesterday I woke up @4am and drove 5hrs to a car show, used nokia drive there and back as well as glympse, too over 100 photos, was on foursquare, footspotting, multiple forums, carbon most of the day, know i prolly did more as well but the charge lasted 20 hrs before i finally plugged it in when i got home. Think the slowest data i was experiencing was around 2.5mb down. Reception was awesome, everyone keeps saying you sound so clear. I have yet to have a single complaint. In my opinion the beta phone campaign holds some bearing.