Keep the phone locked when you are not using it. Even though this is something really obvious, some people refrain from doing this as they find it annoying or pointless to unlock the screen in a short interval. Locking the screen does not prevent your phone from receiving calls or text messages, but in fact helps to extend the life of your battery.
Use your phone regularly, as it is important to keep the electrons moving in lithium-based batteries.
Minimise the use of your phone to watch videos or playing games, as these keep the screen’s backlight on and thus decrease battery life. Additionally, games use a greater amount of iPhone 5’s processor and graphics chip, which also causes the battery to run out faster.
Minimise the amount of time you spend on FaceTime, which not only depletes battery faster by utilising the phone’s network connection, but also its camera.
Update your iPhone 5 to the latest software. Apple keeps on releasing new updates from time to time, which not only introduces new features to the phone, but also enhances the existing features, including an increased battery time.
Make it a habit to disable Bluetooth when you are not using it.
Decrease the brightness of your phone’s screen. The brightness allows you to see the display in bright light, but this becomes unnecessary when you are in indoors, thus allowing you to lower the brightness of your screen and consequently increase the battery life.
Do not spend too much time browsing internet and downloading data on your phone. These activities keep the screen’s backlight, Wi-Fi adapter active, thus causing the battery to drain faster.
If you have apps running in the background even though you are not using them, close them. They not only drain the battery, but also consumes system resources, which makes your phone slightly slow.
Push notifications for new e-mail messages involves your phone connecting to the internet periodically to check for new messages. This may end up keeping the network connection active, thus decreasing your battery life.