I was curious to see what my battery life would be like on wifi today and wow was I blown away. I have never seen an android device last this long on one charge. Both standby and screen on times are beyond impressive. The battery life on this phone seems to be getting better the more I use the phone. I've had it for a little under two weeks so I guess that the phone really does need a few charges to reach its potential. To say I'm impressed is an understatement