I can sometimes get the full battery glowing battery image after rebooting the phone. Once in awhile It shows the battery is not full but I get the plug icon instead of the lighting. It is never constant. However I think I am pretty much matching apple's specs. With bluetooth and wi-fi off my best run time so far as been a little over 2 days standby, 4 hours worth of calls, 2 hours of internet browsing over mostly edge, and about a half hour watching movies. I still had yet to get the 20% warning even though the battery icon looked like it was around 10% or and it was in the red when I started to charge it back up. Anyway has apple mentioned anything about improving the accuracy of the battery meter on the next update? Which I hope is soon.