I have been using AVG antivirus on my note 4. Is it really necessary or is it another battery eater? What do you think?
Essential as far as I'm concerned. Malware attacks are increasing regularly in Android.
Google Pulls Sketchy Android Apps -- But Not Before Millions Downloaded Them
I don't believe in antivirus on mobile phone
KRASIVA
Unfortunately, that doesn't mean the viruses don't believe in attacking your phone.
Check the article I cited above...
I don't usually find antiviruses help a lot on mobile, I just try to be careful with websites I'm visiting.
Malware attacks are increasing in frequency and becoming more and more sophisticated. For example, in the article I just cited above, it doesn't matter what website you visited, because the malware occurred from a program actually downloaded from Google Play.
My phone's performance is fine. AV programs don't cost much. Better safe than sorry. I see no downside to using an AV program.
I hate to use the analogy, but it's like listening to people say "I never backup and never had a problem." Then, one day they lose their hard drive "Oh, no, I lost 6 years of wedding and baby pictures...!"
Security is a process. The attacks are increasing in frequency. Most people have a casual attitude to phone security. I think increasingly we are going to find that is a BIG, BIG mistake. Because when the bad guys understand where the vulnerabilities are, that's where they attack. Phones today include saved credit cards, logins to critical apps, etc. It is potentially a serious issue.