When the iPhone 6 finally comes out, you will have a choice between two sizes for the phone. The 4.7″ version has a display that is less than an inch larger diagonally than the iPhone 5s and 1.2″ larger than the iPhone 4s. The 5.5″ version will be a much larger device with the screen size adding 1.5″ to the iPhone 5s and 2.0″ to the iPhone 4s. For comparison, Samsung Galaxy S5 has a display size of 5.1″ and as shown in the video below, both the OnePlus One and LG G3 will have the same display size as the larger iPhone 6.
The biggest problem with the 5.5″ iPhone 6 shown in the video is that it is just a stretched out iPhone. The phone towers over other devices that have the same screen size, the bottom has more surface area even though the mockup has the same layout as the other iPhone 6 and the back looks freakishly huge. Apple has a high attention to detail and cares about the design of their products so they would never release a stretched out iPhone. They will either decrease the bezel size, add more features or do something for their customers to make them more interested in purchasing the 5.5″ version (and not just because it has a larger display).
Current rumors suggest that we will be seeing both versions at the keynote in September. They will likely be announced together along with the release date for iOS 8. Deutsch Telekom, two months ago, leaked the release date for the iPhone 6 and even though it hasn’t been confirmed, we should expect the phones around September 19.