Android phone speedup trick

First, you’ll need to enable access to the hidden “Developer options” menu on your Android phone.
To do that, simply tap the “About phone” option in Settings.
Then tap “Build number” seven times and you’re done.
Now you can just back out to the main Settings menu and you’ll find Developer options somewhere
near the bottom of the list.

Now that you’re done with that part, the real fun begins.
Tap the new Developer options menu you just enabled and scroll until you see the following three
settings (note that they may be located within an “Advanced” subsection):

1- Window animation scale
2- Transition animation scale
3- Animator animation scale

See them?
By default, each of those three options is set to “1x” but tapping them and changing them to “.5x”
will dramatically speed up your phone.
This harmless tweak forces the device to speed up all transition animations, and the entire user
experience is faster and smoother as a result.

http://www.reddit.com/r/Android/comments/1sl0ep/list_of_android_secret_codes_tips_and_tricks/