Minecraft Worlds Disappeared When Using External Storage on Android

According to Mojang, starting with the Caves and Cliffs Part 2 update, Minecraft will make required Android storage updates that may make player worlds disappear. The worlds are still on the device, but they must be moved manually for the game to continue to access them.

Worlds may disappear in these conditions:

• The world is saved on External Storage (Settings > Profile > File Storage Location > External)
• The game is uninstalled and reinstalled or the user backs up and restores to a new device

If that is your case, BackupChest has the ability to recover your lost worlds quickly and easily.

If BackupChest detects worlds saved on the external storage, it will display a third icon in the Navigation Bar called Storage. Tap it to access.

Just select the worlds you want to copy and click the Copy Items button.

That's it!