The two-year-old mobile is now available free for just £19 a month -- that's the cheapest you'll find it in the UK!
Meanwhile, Apple has removed the iPhone 5 from sale, in favour of the new iPhone 5S.
The budget iPhone is on the way in striking colors, and iPhone 5S could get fast LTE technology, according to reports.
In a contest between unannounced products, the next iteration of the iPhone proves to be the surer bet, according to CouponCodes4u.
According to a Wall Street Journal report, the next version of the iPhone could feature a thinner and lighter screen that incorporates in-cell technology.
For those who don't want to be bound by a single contract or carrier, the new iPhone 4S is now available from Apple as an unlocked phone selling at non-subsidized prices.
Choosing the best carrier for your iPhone 4S depends partly on which network offers the best call quality.