Features of Android is infected with Malware

How do I know if an Android device has been infected with a virus or something of the sort?
 
Virus on Android, the more likely we are to classify malware cocoknya. Due to its slightly different. Where the virus prefers to infect and destroy malware applications or data, more are taking advantage of our device.
 
There are some traits that can be early indications that the device we are exposed to malware, but not necessarily certain, too, that malware cause. It could also be caused by other things. For Example:
  • Phone charges suddenly swell, and when in check from the list of bills, a lot of phone calls to numbers which are not known to us.
  • Usage of data suddenly surged away from the usual.
  • Battery depleted significantly faster than usual