My Android device is that unstable to keep your finger on the screen

Question

I have a Android 4.2.2 phone. (Samsung galaxy s4 mini duos gt I9192) and since I buy it I realized that by keeping one or two fingers on the screen for a few seconds the device remains stable and stops reading fingers, I want to know if gesture is normal or is there a setting to fix it please help

Answer 1

Questions, you have connected to the computer or charger when you did the test? Something has happened to us like us 

 

greetings Nexus

Answer 2

Online or offline is equal only happens when I have an open application or game