How To Discharge Your Phone Battery. A restore as a new phone has not helped. Turning off push and location services etc makes very little difference so it appears there is something not right in the OS.

The problems start when a battery is fully-discharged or for that matter kept at 100 charge. If these happen do a full discharge followed by a full charge for recalibration. At 100 unplug from charger and power on your phone.
Once my phone was 95 charged and it slipped from my hands and fell on the floor the battery o.
Make sure your computer is plugged in and powered on when youre using it to charge your iOS device via USB. Ending a charge at 80-90 is better for the battery. However the battery discharges even when the iPhone is turned off at around 3 per hour. After installing Fast Discharge from the Play Store the Battery power at the top of the screen shows the current battery level.

