Typical data restoration on spotify premium consists of anything after recovering playlists and listening history, as well as downloaded content. Spotify's official support documentation states that it is possible to recover a deleted playlist within 90 days. In order to achieve this process, users will have to sign into their Spotify account through a web browser and move over "Recover Playlists" where they can choose the playlist that they want recovered. The process should only take a few seconds to complete and Spotify reports that its system is able to restore 85 percent of users' playlists within those several seconds.
Spotify also stores the listening history and favorite tracks of users as well, which is good because Spotify uses this data. In case of issues with the account that cause data loss on all devices, such as logging out in every device or reinstalling the application,the user will be able to restore it by signing-in back. For example, Spotify keeps your user data as long you have the account so that all personal preferences, playlists and recommendations are preserved.
Downloading songs and podcasts saves storage when you want to listen offline, but if there users clear the cache or switch devices they have need redownload files. About 3,500 songs will be down-loaded by the average user of Spotify not to mention locally stored on that device. For the latter though, as with all other services, you must be online once a month to keep your hands on downloaded content by virtue of licensing deals. If you do not, this could necessitate redownloading files (in my case, it can take up to an hour depending on the size of your library and how fast is the internet connection).
Spotify's support recommends reaching out to their customer service if the users encounter any account or data issues. From user testimonials, Spotify resolves near 90% of data recoveries within less than two days.
Need help restoring the data you lost or details on using your spotify premium account, head to Spotify's Help page, and browse through their community forums setError 404: function not found.