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CSS Bootstrap 4 Basics (Retired) Responsive Layouts with the Bootstrap Grid Column Sizing

Jordan Palmer
Jordan Palmer
3,857 Points
Posted by Jordan Palmer
Jordan Palmer
3,857 Points

Why does Chrome's dev tools give a device width of 414 x 736 for iPhone 6 Plus, when actual res is 1080 x 1920?

Also, since mobile device resolution is often as big or bigger than non-retina desktop displays, can Bootstrap recognize mobile devices and change grid/column pixel width behaviour accordingly?

2 Answers

Gareth Bromser-Kloeden
Gareth Bromser-Kloeden
9,938 Points
Gareth Bromser-Kloeden
Gareth Bromser-Kloeden
9,938 Points

There's a good explanation here:

http://blog.fluidui.com/designing-for-mobile-101-pixels-points-and-resolutions/

tl;dr iPhone screens are rendered first in "points" (414 x 736 for iPhone 6) to maintain consistency across different devices and then converted into the actual pixel resolution (1920 x 1080)

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

I don't know, but there's an easy work-around.

:point_right: In the device choice drop-down, select "edit" and when that pops up click the "add custom device" button. Set 1080 x 1920 for the size, and if you want, name it "ACTUAL iPhone 6 Plus". :smile:

For mobile responsiveness, you could try overriding the default media queries in Bootstrap with some having very narrow ranges (perhaps only the exact dimension) combined with orientation. Still, you'd have a very high likelihood of identifying a particular device, but not a certainty.