Secure your Android smartphones and tablets using antivirus, encrypted communications, child locks, password managers and other tools featured in our roundup.
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Have you ever discovered your Android device in an unexpected part of the house, with $20 in unauthorized Google Play downloads and your background photo changed to Moshi Monsters? If so, you might want to consider a locking app such as App Lock, which can be set to prevent outgoing or incoming calls, lock system settings and block access to Google Play. The paid version of the app adds multiple lock profiles -- think kids, co-workers, boss -- as well as the ability to hide the unlocking screen, or to lock the device at a preset time or location.
Also on the locking front, the free Smart AppLock (App Protector) lets you lock any app -- locked apps show a lock icon -- as well as block access to Google Play, the device's install and uninstall menus, and all messaging, photos, contacts, the camera and the phone itself. A similar option, Privacy Master, also offers voice alerts and the option to block USB connection attempts and the Task Manager.