iOS 8.3 battery drains very fast
MY iPhone 4S battery is draining very fast after i applied 8.3 update last week.
It goes from 100% to 60% without usage and 3G on for just 2 hours. Without 3G we get the same result just bit difference.
Once its 40% then it will drain at the speed of time. 40% to 8% in just 15 min of 3G usage.
Is it because my iPhone 4S is old (almost 2 years now) or is it because of the update ?
iPhone 4S, iOS 8, Update