If you have a good antivirus application on your phone that does not mean that you are completely safe. Security is not just one or two items, but a lot of them. Fortunately, Google's Android operating system is very flexible and thus can easily provide protection to all segments of security and privacy that may be affected.
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AppLock Android security app
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Virtual Private Network
If you do not want someone to monitor your Internet surfing, which can detect a number of your habits and information, political activities and who knows what else, then you should use a virtual private network, ie. VPN. Using the VPN, instead of directly communicating with the sites you visit, you will first connect to the server, which will later connect you to the site you want to access. This method practically hides your device and the information contained therein. The primary purpose of a VPN is privacy rather than anonymity.
AppOps Android security app
LastPass Password Manager Premium
Only if you are a person who has a supercomputer instead of brain, and you manage to remember all the passwords you use, especially if you are registered in a number of sites, services and the like, then you will not need this app. Fortunately, for those who do not remember, there is a solution in the form of application that will perform all the tasks for them. It is the application LastPass Password Manager Premium, which provides a much easier use of passwords, logging on to certain websites and their organization.