Big iPhone 6 rumoured to be late -

While the world+dog has been plagued by the usual rumours about the iPhone 6, we found one which was potentially brilliant – the world will not have to suffer the super-sized version until next year.

Chinese website ctee.com claims that Apple's next iPhone iteration won't be arriving until sometime next year.

Apple plans to release the iPhone 6 in two sizes: 4.7-inches and a larger 5.5-inches. Mystery has surrounded the larger version in particular, with some claiming it wouldn't arrive until after the smaller version launches, and others think it is far too innovative for Apple to release.

According to the latest sources, the 4.7-inch iPhone 6 will arrive in the second half of this year, but the 5.5-inch version, which will be called the iPhone Air, it is being suggested, won't arrive until 2015 because Apple can't get it to work.

While the Tame Apple Press is claiming that it is only a rumour, the Chinese site has a good amount of detail.

The problem appears to be the battery. Apple has asked the battery cell supplier to cut the thickness of iPhone Air battery by a third, but it turns out that this is a challenge to the technical limit of flexible packaging cell battery cell plant.

A general smart phone battery is 2.8 to 2.9 mm, but the thickness of the battery Apple iPhone Air requirements must be 2 mm or less. Not only is this tricky, but there are yield problems and difficulties getting enough.

Chinese plants are apparently trying to work out how they can upgrade so that the batteries can be made in time, when they are effectively invented. All up, this means that a year seems optimistic for the Apple iPhone Air and indeed a big size iPhone generally.

The 4.7-inch screen increase is not exactly dramatic in comparison with what others are doing in the market so the lack of a compelling new product will probably send the Apple into a snooze for a year.