Wirelessly posted (Opera/9.80 (Android; Opera Mini/5.1.21126/19.916; U; en) Presto/2.5.25)
with avg usage and email pushed from/to exchange server....i m getting about 3.5 to 4 hrs
.... i hate when i forget to put it on charger and my phone dies in my pocket....but still using android as primary os on an wm phone is cool and freaking amazing