You don't have to pay a huge amount to upgrade from the iPhone 5 to the iPhone 5c, the iPhone 5c is now Apple's cheapest iPhone costing £319 up front (and probably available for free on contracts).
However, there isn't a big difference between the iPhone 5c and the iPhone 5, in fact when it launched many pointed out that the iPhone 5c is a repackaged iPhone 5. However, apart from the obvious difference — colour and polycarbonate coatings — the iPhone 5c does offer a better camera and, as we said above, it will work with all the UK 4G networks.
The one place where the iPhone 5c lets itself down is the capacity — Apple is only offering 8GB which really isn't enough in our opinion.
On that basis, it might be better to update from the 5 to the 5s, or go the whole hog and get the iPhone 6 or 6 Plus.
iPhone 4s (currently not on sale)
Apple was still offering the iPhone 4s for sale until quite recently, but it dropped out of availability when the iPhone 6 series made their debut. There are still a fair few Apple fans on this relatively elderly device.
The iPhone 4s has a smaller screen than the iPhone 5 (it's just 3.5 inches, compared to the 4-inch screens on the iPhone 5, 5c and 5s, and of course the still-bigger screens on the iPhone 6 series) but has a similar metallic shell. It uses a Micro-SIM and was launched in October 2011. Read our iPhone 4s review and our iPhone 5c vs iPhone 4s review.
If you've got an iPhone 4s... should you update to one of the newer iPhones?
Upgrading from the iPhone 4s is a bit of a no-brainer. It's a 3.5-inch phone for starters, so you're working with less screen than most other smartphone owners: whether you upgrade to the iPhone 5c or 5s for a 4-inch screen, or the new iPhones with their 4.7-inch or 5.5-inch screens, you'll quickly get used to the extra screen space. The iPhone 5 was 18 percent thinner and 20 percent lighter than the 4S, the iPhone 5s even lighter still. The new iPhones are even thinner, although since they have bigger screens you may notice the extra bulk.
For some the huge leap from a 3.5in iPhone to a 4.7in (or even 5.5in) model may be too great. Those people might prefer to opt for the cheaper iPhone 5s.
The only other reason that you may not wish to upgrade from the iPhone 4s is if you own speakers and other iPhone accessories that use the older iPhone port. With the iPhone 5 Apple introduced the smaller Lightning dock, which means your existing accessories will need an adaptor, which costs £25.
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