why phone apps and notification bar are automatically opening without my touch

[Android Central Question]

Hello, i have Lenovo Vibe K5 note mobile. when i using my phone suddenly without my touch notificaton bar is coming down ad from there settings and other apps are opening automatically. when im working with my phone it doing nonsence stuff automatically.while i seeing images in my phone suddenly the images are sliding automatically,when i watch youtube the video was forwarding or backwarding automatically. This is very irritating...

 

[B. Diddy]

Welcome to Android Central! Do you have a screen protector on, or a case that doesn't fit well? If so, remove them.