System Cleaner is one of the best antivirus and system cleaners for Android devices. It is a secure way to make sure that your Android mobile device is not bogged down by viruses or any other system issues. You can quickly download System Cleaner to get it working on your Android device in no time flat. One of the ways that System Cleaner can improve your functions on your phone is that it unclogs many of the processes that take up valuable memory space on your mobile device. This makes your phone work faster while you are accessing its apps.