iPhone 6s

Compared with the iPhone 6, this model added 3D Touch, a display that senses how hard you press, and the Taptic Engine. It moved to the Apple A9 chip with 2 GB of memory, and Touch ID is faster. The rear camera went from 8 to 12 megapixels with 4K video, and the front camera to 5 megapixels. The case looks almost the same but uses stronger 7000-series aluminum.

Model number

A1633 or A1688 or A1691 or A1700

Model identifier

iPhone8,1

Released

2015

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