1) Things that you already know
First things first, These are some tips that you already know that might help you save power and work on nearly on any iPhone or iPad and most of them can be easily fixed through Settings.
- Switch your phone off when you’re asleep.
- Switch off Bluetooth if you’re not using it.
- Switch off WiFi if you’re not using a wireless network.
- Switch off location services and automated Mail checks
- If you don’t need to use data services or call features on your iPhone for a while, switch it to AirPlane mode. You can do this using Control Center in iOS 7, and/or in Settings>Airplane Mode>Off/On, otherwise.
- Reduce display brightness (Settings>Brightness/Wallpapers & Brightness. Disable Auto-brightness and manually reduce the brightness of your screen).
- Disable 4G/3G: doing so reduces battery drain as your cellular radio seeks a signal. Settings>Cellular and switch off the Enable LTE or 4G button does the trick.
- Disable vibrations on your iPhone in Settings>Sounds.
- Notification Center is another feature you can control. Settings>Notification Centre lets you switch off notifications for those apps you don’t need to know about, or altogether if you just need a few more minutes of battery life.
2) Background App Refresh
To control which apps would run on this feature, visit Settings > General > Background App Refresh. Here, you can turn off the entire function or just disable that apps you don’t need to refresh on an automatic basis. For example disable App Refresh for Maps until you are actually using Maps on a journey somewhere.
3) Location-Tracking Apps
Many apps — from Google Maps to Twitter and even the iOS camera — are tracking your location at all times. You can turn off Location Services completely (Settings > Privacy > Location Services) or disable certain apps one by one.
4) Reduce Motion
Visit Settings>General>Accessibility>Reduce Motion and set this setting to “on”. Doing so prevents the motion in the user interface, including the parallax effect.
5) Static Wallpaper
Animated wallpapers are nice and pretty no doubt, but they suck a lot of battery, so switching to a static wallpaper will slightly reduce battery drain. Got to Settings>Wallpaper & Brightness > Wallpaper > choose a static wallpaper for your phone.
6) Automatic Updating
iOS7 automatically updates your apps without visiting the App Store to do it yourself. To disable this, visit Settings > iTunes and Apple Store and uncheck the Updates option.
7) Turn Off AirDrop
You might now need to share your files the whole time, so why not turn it off and save some power. Slide open the Control Center and switch it off there.
8) Turn Down Brightness
Everyone knows this one! Use the Control Center or visit Settings > Wallpapers & Brightness and disable Auto-Brightness and decrease the setting manually.