How long with out connection ?

[Asnowsill]

My Dad works at sea for six weeks at a time and is planning to take his phones with his downloaded Spotify music on it. How long can your device be offline before it wants to connect and authorise the account ? Obviously he won't be able to connect over the six weeks.

Cheers

[Joe]

It's 30 days - https://support.spotify.com/is/using_spotify/playlists/listen-offline/