The 24-month plans will be available from February 1st and will be available for a range of smartphones including the iPhone 4S, Samsung’s Galaxy SII and the Blackberry 9900.
BlackBerry users will enjoy free access to BlackBerry Mail and Messenger.
Ben Fritsch, Head of Propositions, T-Mobile UK,said: “Over the past two years, we’ve seen a rise in mobile internet use of over 250%, which reflects the consumer trend of being ‘always on’ wherever they are.
“The Full Monty has been designed for customers who want the peace of mind that there are absolutely no limits placed on their allowances, whilst also knowing they’re getting market leading value for money.”