Why can my phone only detect 2 fingers?

[Android Central Question]

I've saw people playing with 4 fingers one of the games that i play"Critical Ops"and i really need to use my 4 fingers but when i put more than 2 my phone doesn't recognize.
All help appreciated.
By the way my phone is a Samsung J3 (2016)
Android 5.1.1.

 

[B. Diddy]

Welcome to Android Central! Use MultiTouch Tester to see if your screen is functioning correctly.