Android phones and tablets display animations when moving between apps and screens. The animations look so smooth but but can make your device slower. Disabling these animations display will speed up navigating between different apps and interface screen on your phone, thereby saving you some precious time.

To disable the animation of your device you will need to have access to Developer options which can be found under settings.

In some android devices, you may need to go to Build number under About phone and tap it severally until you see "you are now a developer!" before the Developer options is enabled.

Read more http://hotfixtech..com.ng/2015/09/how-to-increase-speed-of-your-android.html