Mobile devices hold personal data that's subject to theft or being left behind when you trade in your device. Here's how to secure your data with encryption.

To turn on data alerts on Android, go to Settings > Network & Internet > Data Usage > Mobile Data Usage. Once there, tap the “Set data warning” switch on to be blue.

Mobile devices hold personal data that's subject to theft or being left behind when you trade in your device. Here's how to secure your data with encryption.

How to turn off cell data for specific apps on iOS? Just like Android users, iPhone users have complained about the amount of data that certain apps use in the background.