fake cracked screen prank

破获屏幕的恶作剧是一个笑话应用程序，它模拟了一个破碎的手机屏幕。

Cracked screen prank is a joke app which simulates a broken phone screen.

Start "cracked screen prank", give your phone to your friend, wait until delay time run out, when your friend touch the screen, you will hear a cracking sound and see a simulated cracked screen ( not really ) on your phone.