Avast Mobile Security is a popular app that helps keep your phone safe. But does it use up your battery life? Avast Mobile Security is a popular app that helps keep your phone safe. But does it use up your battery life? The app has been designed to help you stay safe and secure, and it does this by scanning for viruses and malware on your phone. It also protects you against phishing attacks, which are when criminals try to steal your personal information by posing as legitimate websites or email addresses. But does all of this activity actually use up your battery life? According to the developer of the app, Avast Mobile Security only uses about 0.5% of the battery on average. So if you have an iPhone, for example, Avast Mobile Security should only use about 5% of your battery each day. ..