The colourful, plastic-cased 5c was launched last year alongside the iPhone 5s, Apple’s high-end, flagship model.
Prior to launch it was expected the 5c would offer a cheaper iPhone option to customers who might otherwise buy a competing Android-powered device.
However the 5c ended up just £80 cheaper than the £549 5s and has reportedly suffered from poor sales, although the firm doesn’t break down iPhone sales by model.
The new 8GB version of the iPhone 5c costs £429 off-network and is available from Apple online and high-street stores as well from mobile networks as part of a tariff deal.
Apple has also discontinued the iPad 2, leaving the smaller original iPad Mini as its cheapest, entry level model alongside the iPad with Retina display, iPad Mini with Retina display and iPad Air.