how to know if you have a virus on your phone?
['Excessive data usage. When a virus has infected your phone then some apps are running in the background that may cause excessive usage of data. ... ', 'Unusual app crashing. ... ', 'Pop-up Ads. ... ', 'Increment in bills. ... ', 'Unwanted app. ... ', 'Battery drainage problems. ... ', 'Overheating usually.']