Why is my Battery draining so fast
I recently received a OS upgrade notification and updated my device to 10.3.1.1779 as soon as I updated the OS battery has started draining very quickly. The battery goes into Battery saving mode at less than 20% with in an hour. I am a reasonable user but most of my usage are calls. I read on forums that the battery will come back to normal after a few days of the upgrade but it is now more than a week for me after the upgrade and still no signs of improvement.