A:Answer If having a phone that will last an entire workday with commute at reasonable screen brightness, and using bluetooth and/or wifi are deal breakers for you, look elsewhere. I don't know how these folks are getting such phenomenal battery life because my brightness is 9% (I actually use a magnifying glass to see the screen sometimes), wifi, bluetooth, sync, vibration and any feature that demands power is turned off and it is now essentially a dumb phone because of the features one must disable to get 10-12 hours of use between charges. There was a guy raving in another forum how he got 2 days out of 1 charge with heavy use and I'd like to know his secret because I am a fairly competent device user and with mine in Flintstone mode it does not get more than half a day (12 hours). The other day it went from 87% to 21% in 4 hours! And that was with less than 1 hour screen on time at a pitiful 9%. Read the experience of others but mine is not a positive one, especially after all the hype and a previous phone that was small by comparison but had a 3300 mAh battery and lasted for days. Good luck to you.