1. Android Device Manager: If your Android smartphone is lost somewhere then Android Device Manager will help you find it. This app tracks your phone and can help you recover lost or stolen phones. Not only can this, through this you remotely reset your handset to factory even if you have already configured this functionality. 2. Google Authenticator: If you use Two-Factor Authentication, then this app is essential for you. Through this app two accounts with accounting authentication can be easily applied. The most important thing about this is that it also works offline for many Google devices. 3. Gesture Search: With this app, you can access apps from settings to skin gestures. Your search will be refined and you will add more gestures. So if you hate typing then the gesture will work. 4. Google Keep: Through this app, you can create notes on the go anywhere. There's a lot of color-coded notes, quick to-do lists, reminders ... a lot. And since all of t...