I suggest you to follow the steps below to free up your mobile.
Apps and games that you’ve installed on your Windows Phone. You can determine how much storage space a particular app is using and then delete some of the huge apps/games
which you no longer need. Alternatively, most of the apps and nearly all of the games can be moved to the SD card (provided your phone supports expansion via SD card). Plus you can also configure the phone to always install new apps to the SD Card.
Any storage consumed by music files (generally MP3 format files) stored in your phone memory are accumulated under the Music category. Similarly, any video files (in supported formats) on the internal storage
are counted under the Videos category. Storage sense only shows how much space such files are taking on your phone with no way to directly manage them. You can tap Manage to shoot up the default Music Player or Video Player to delete the files that you no
Anything downloaded from the web and stored in the Downloads folder gets accumulated here. You can use a File Manager to move them to the SD card, transfer them to a PC or simply delete.
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