Both iPhone 6 Plus and iPhone 6 feature an A8 chip, whereas iPhone 5s has an A7 chip. IPhone 5c uses an A6 chip. Other key differences include the color availability, size, storage capacity and LTE wireless capability of the phones.
IPhone 6 Plus, iPhone 6, iPhone 5s and iPhone 5c all feature an eight-megapixel iSight camera, Touch ID and iOS 8. IPhone 6 Plus, iPhone 6 and iPhone 5s are available in space gray, gold and silver, while iPhone 5c is available in white, pink, yellow, blue and green. IPhone 5c offers only eight gigabytes of memory, whereas iPhone 5s has 16- and 32-gigabyte options. Users can choose 16, 64 or 128 gigabytes when buying either iPhone 6 Plus or iPhone 6.
IPhone 6 Plus is the largest among the four models, having a 5.5-inch display size. IPhone 6 Plus users enjoy a resolution of 1,920 by 1,080 pixels. IPhone 6 has a 4.7-inch display size and 1,334-by-750-pixel resolution. IPhone 5s features a 4-inch display and a resolution of 1,136 by 640 pixels. In comparison, iPhone 5c has a 4-inch display size and the same resolution as iPhone 5s.
All models feature a LED-backlit widescreen with multi-touch capability. Autofocus with Focus Pixels is a new camera function in iPhone 6 Plus and iPhone 6.