+447836 121 121: this is your Vodafone Voicemail number, which shows up when you pick up messages from abroad.

+447785 016 005: this is our Vodafone message centre number. All our text and picture messages go through this number before reaching the recipient.

Text info services: these are text messages to premium rate numbers, like buying a ringtone, or alert services like football updates and horoscopes. They normally show up as a five-digit number. To cancel text message services, simply reply by text message with the word STOP.

07744 numbers: we charge for these because they aren't regular mobile numbers – they’re call forwarding services. They’re common with services for making international calls.

08- and 09- numbers: we charge for numbers starting 08- and 09-. If you call a lot of these numbers, you may be able to save money on your bill with Vodafone Extras.