By specification an iPhone 5 battery life is Up to 8 hours on 3G (TalkTime) and Up to 225 hours (Standby Time). However if you experienced shorter battery life than what is said in its specification,perhaps itâ€™s time to re-evaluate the features you are frequently using. May you find these tips helpful.
Setting it to a not too bright when in use will help lower down the iPhone5 battery consumption. Go to Settings > Brightness > then move the slider as far left as you can while still being able to see everything.
Lock it Up
When not in use, be sure to lock it to save battery (click the top button for sleep/wake) or auto lock your iPhone5. Go to Settings > General > Auto-Lock.
Leaving applications active will drain the battery even when the iPhone 5 is in the standby state. Make sure to close it after using.
Turn off unused networking
Turn 3G access, data roaming or Wi-Fi OFF when not in used. Go to Settings > General > Network and select options there.
Keep it Cool
Make sure to keep your iPhone 5 as close to room temperature as possible, which would be about 22 C (72 F). Avoid putting it in the hot part of the car or any surface or in direct heat of the sun.
Turn Off Bluetooth
If you are not using it, turn it off. Go to Settings > General > Bluetooth.
Plug into the Computer USB port
This is also a great opportunity to synch your phone and download any new versions of iTunes or the iPhone software, or perhaps upload any data from your phone to iCloud.
Maintain your battery’s health
Apple says, “For proper maintenance of a lithium-based battery, it’s important to keep the electrons in it moving occasionally. Be sure to go through at least one charge cycle per month (charging the battery to 100 percent and then completely running it down).” Need I say more? Completely drain it at least ones a month and fully recharge it.
If you donâ€™t need the â€œvibrateâ€ function or your iPhone5 is not in a silent mode, shut off the vibrate function. Go to Settings > Sound > two vibrate options there.