ntroduction

Here are a few steps to take to improve your iPhone's battery life. If you have any queries on the below, please let me know!
Steps (13 total)
1 Fully charge and drain the battery
When you first get the phone make sure you take it out, fully charge and then leave to completely run out of battery. Repeat this a few times. Doing this sets the maximum battery capacity for future charges on the device.
2 Switch off AirDrop
AirDrop is now available for iPhone 5, 5s, and 5c devices running iOS 7, allowing you to share files and photos with friends and colleagues over the air when they are in close proximity. But its use can take a heavy toll on your battery, particularly when AirDrop is in "discoverable" mode. Simply swipe up from your home screen to bring up the Control Center, then tap AirDrop. SelectOff when you're not using it. check here for more http://www.alexintutor.com/2015/10/how-to-improve-iphoneipad-battery-life.html