Is mobile layout under 320px still relevant?

Question

css

Interested in just such a question more, are there any other devices with such screens?

Answer 1

viewportsizes.com devices and viewports

Answer 2

even if the screen has a physical resolution of 640px, the browser still considers it as 320 and will display it as 320, read about retina and high pixel density screens and how they work with the web

Answer 3

Quite, there was a question about 240 recently. Even if they are not released, they are still on hand.

Answer 4

320px is iphone 5 so think for yourself