Ever needed to hand your Android smartphone to someone else for a while? If yes, then there's a good chance that you were worried about how easily they could go through your personal data or end up changing preferences or even deleting information like contacts or messages.
Fortunately, Android 5.0 Lollipop ships with a system-level guest mode. This lets you quickly switch to a separate guest profile that doesn't have any of your personal data such as messages, installed apps or preferences. This is as good as a fresh install of Android 5.0 Lollipop and the moment you switch back to your Google account, all data saved in the guest mode is removed. This makes it a particularly effective way of letting someone else use your phone for a while.
Swipe down from the top of the screen to pull down the notifications bar.
Tap your avatar on the top right twice.
Now you'll see three icons - your Google account, Add guest and Add user.
Tap Add guest.
Now your smartphone will switch to guest mode. This may take some time and the phone may be slightly slow initially, but in our tests with a Nexus 5 it worked well after a few minutes.
When you're done with guest mode, you can easily revert to your Google account. Follow steps 1 and 2 above and tap the icon that shows your Google account. This will delete all data saved in the guest session as well.
If your phone doesn't have this feature, the most effective way to keep your personal data safe is by locking down certain apps. We've written a detailed guide on how to stop others from accessing your Android apps so be sure to check that. If you just want to keep Google Chrome away from prying eyes, you can read our guide to enabling guest mode in Google Chrome.