Yeah my Xperia Z3 gets maybe about 8-16hrs a day on heavy to medium usage, but I tend to charge it at around 30%. I tried the ultra power saver mode once(turns your smartphone into a phone) and it stayed at 5% for over an hour on light to moderate use(I got to a charger before it dropped). I keep my brightness at about 75-80% with auto brightness off.
Yeah my Xperia Z3 gets maybe about 8-16hrs a day on heavy to medium usage, but I tend to charge it at around 30%. I tried the ultra power saver mode once(turns your smartphone into a phone) and it stayed at 5% for over an hour on light to moderate use(I got to a charger before it dropped). I keep my brightness at about 75-80% with auto brightness off.