2017 Update: This tips is very old now, and the information is almost certainly out of date.
Problem: Just bought a new VodaFone contract that includes Spotify Premium (or Sky Sports something or other), and we website / in-store / 191 support don’t seem to know how I should actually activate it.
Solution: Send a text with the word ‘Entertainment’ to 97613. You’ll get a reply from VodaFone with a link and instructions. This worked at time of posting, 5s’s are new, 4G-ready contracts are new. Expect this to change.