Launch your phone's app drawer and find the app whose stored data you'd like to get rid of. Long-press on the app icon and hit "App info" or the lowercase "i" symbol.

Then check your device for any removable storage. For computers, that means checking the DVD drive, card reader, floppy drives, and USB ports for old or forgotten media.

Also, note the icon before unlocking, and once you unlock it, its icon changes. This is how you encrypt and secure your portable devices and drives using BitLocker To Go in Windows 10.

Android users will need to opt-in to use the auto-archiving feature. The option will appear via a pop-up window when attempting to install a new app on a device that’s out of storage.