iPhone versions

iPhone X:

iPhone 8:

iPhone 8 Plus:

iPhone 7:

iPhone 7 Plus:

iPhone 6:

iPhone 6 Plus:

iPhone 5s:

iPhone 5c:

iPhone 5:

iPhone 4s:

iPhone 4:

iPhone 3GS or 3G:

iPhone 3GS and 3G look similar. iPhone 3GS has both video and still cameras, and iPhone 3G has a still camera only.

Apple has discontinued support for certain technologically obsolete and vintage products. See this Apple Support article for more details.