Double tap to screen on off any mobile best trick without power press screen off on

How to double tap screen on off application in any android mobile

See video

Nice video and ine app use without root
WhithWi use power button screen on or off
Kaise kare. Aap ko es application apne mobile me install karna hai uske baad usme kuchh setting karni hai or apne mobile.me is app.lp kuchh parmition deni hai
Pr fir aap ke move me ye app kaam karne lagegi

 No Root : dosto aap ko iss app ke liye mobile ko root karne ki jarurat bhi nahi padegi or aap ke mobile me achhe se kam bhi karti hai aap ko agar nahi samajh me aaya to ye video jarur dekhe