First of all, unlock your Android and go to the main menu. Now, open the Play store application and search for an app ‘save power wallpaper’. When the search results will appear on your screen, tap on ‘No Wallpaper’ which will have a sign of green lightning bolt with it.
Now, tap the ‘Install’ button which will be displayed at the top right corner of your screen.
Then, tap ‘Accept & download’ option in order to install the app on your Android device.
You will have to press the ‘menu’ button to go back to the home screen of your Android. When you reach your home screen, find the ‘Wallpaper’ icon and tap on it.
When you will tap on ‘Wallpaper’ icon, some options will appear on your screen which may include Backup Assistant Plus, Live Wallpapers, My Gallery, No wallpaper, Wallpaper gallery, Wallpaper Wizardrii (if you have already installed it), Wallpapers (Homescreen) and Wallpaper (Apex Launcher).
Select ‘No wallpaper’ option in order to save your power.