There are a few ways to delete apps on the 3DS XL. The first way is to go into the System Settings and select “Delete apps.” The second way is to go into the App Store and uninstall the app by tapping on it and then selecting “Remove from device.” The third way is to go into the Menu system and select “Settings” then “Apps.” There you will find a list of all of the installed apps as well as any that have been deleted.
