Question User device keeps getting infected with spam, need long term solution.

[jades]

I have an old friend of who's device keeps getting infected with spam, I've already factory reset his device numerous times. Last time was last week, But we are both getting of having to factory reset it. Is there any software that will prevent this occurring? User claims he just watches videos (non adult) and nothing else. Also would I need to reset the device before putting on additional software? As that's what I would do with a PC which are similar in terms both are running O/S.

Thank you

 

[B. Diddy]

Welcome to Android Central! Which phone does he have, and what carrier is he using? And what spam is he seeing? Are you talking about spam emails, spam text messages, or unwanted popup ads?