Ok, so I'm wanting to upgrade to Windows Phone 8 from my HTC TITAN. Consider this, my TITAN battery seems to last like 4-5 hours with my usage (almost constant tethering). The thing is, with the TITAN I was fortunate, just pop a second battery in and away I go. Now, I know the 920 has a non-removable battery, so given I am almost always tethering the smartphone, as well as quite often streaming music, and browsing the web, using location services to figure out how to get from A-B.. what sort of battery life can I come to expect from the 920? I know with the Lumia 820 I again have the removable batteries (so I can double up my battery life by popping in a second battery when the first dies), but it lacks PureView, which is what is drawing me to the 920 itself, however, if the battery life for my usage isn't good enough, I'll have no choice but to go 820.