From the 7th of October onwards, existing and new Three customers on pay monthly tariffs will be able to get unlimited data for an extra £3 per month.
The announcement comes days before the expected launch of the iPhone 5 which is set to take place next Tuesday on Apple's Cupertino campus.
Fittingly, Three's press release mentions that iPhone 4 customers on the network were using 488MB worth of data in February 2011 and that this amount had more than doubled within six months to nearly 1.2GB (or around 40MB per day).
This means that from next week, new customers will be able to get unlimited data from as little as £16 per month on a contract with a phone like the Nokia C2-01.
Thomas Malleschitz, marketing director at Three UK, said "Our customers tell us that their use of data goes up significantly over the lifetime of their contracts, as they do more and more with their handset. All-you-can-eat data means that they don’t have to worry, they can have that peace of mind for the long term on a contract of their choice"
It's worth noting that you won't be able to use tethering on your phone, only customers on "The One Plan" contracts can. We've pinged Three PR to find out whether the offer will be valid on SIM only packages as well, and one-month contracts.