Mobile Crash is just a prank/simulated app used for fun, it simulates the crash screen effect to play with your friends. It will not harm your phone.
Mobile Crash Prank is a classic funny app used to prank your friends. When you touch your phone screen, the app simulates the cracked screen and loud cracking sounds on your phone. It looks like you use your finger to break and crack your phone. The broken effect is so realistic that all your friends will believe that your phone was broken and they will be scared.
Your phone will not be harmed.