Hi! I've had lots of battery issues as well, which is annoying because the 'lasts 2 days' advertising was part of the reason I bought this phone. I've found that the location feature is the biggest battery drain, so if any application uses location it'll drain your battery within hours. Switch it to battery saving mode, and uninstall any location-using apps that you don't need - then you can go a whole day without charge. In Ultra stamina mode I usually get at least 5 days on a full charge, if you don't then I guess there's something wrong with your battery.
