title: What devices uses @1x, @2x and @3x?
body: <p>I am curious what iOS devices uses @1x (I know this should be empty), @2x and @3x. When I search on here, I get uncompleted answers like: <a href="https://stackoverflow.com/questions/30049544/what-should-image-sizes-be-at-1x-2x-and-3x-in-xcode">What should image sizes be at @1x, @2x and @3x in Xcode?</a> Here I do not see the iPhone 7 or every iPad resolutions. I need to know this because my app requires image <strong>downloads</strong> and I need to know what size that image needs to be, depending on the screensize. I download it from my server and I would like to know what format (1x 2x or 3x) I should use.</p>
  
  <p>Thanks.</p>