The iPhone 5S is still supported by Apple and was released on Sept 10th 2013 [1] .

The last iPhone to be not supported by Apple was the iPhone 5 released on September 21, 2012 and ended support on July 19th 2017 [2]. They supported it for almost five years.

The Nexus 6P, Nexus 5X, and Pixel C were released on September 29, 2015. [3] [4]. Their software support ends today on March 7th which is slightly more than two years.

[1] https://en.wikipedia.org/wiki/IPhone_5S [2] https://en.wikipedia.org/wiki/IPhone_5 [3] https://en.wikipedia.org/wiki/Google_Nexus [4] https://en.wikipedia.org/wiki/Pixel_C

EDIT: I made a mistake in my last statement that I corrected. Thank you child comment :)