Currently, Wikimedia Commons UploadWizard is more or less unusable with mobile devices as there is a fixed display width is min 750px. With that the content is wider than the screen and using the UploadWizard would require constant both horizontal and vertical scrolling. There two-column layouts that don't fit the screen nicely so the layout should be one column only with mobile devices.
Most of the problems if not all could be fixed with CSS.
Gadget solution for converting UploadWizard to responsive layout:
Steps to Reproduce:
1.) Go with desktop browser to Commons, log in
2.) Got to https://commons.wikimedia.org/w/index.php?title=Special:UploadWizard&useskin=minerva
3.) Shrink window width to 600px or below
1.) Go with mobile browser to Commons, log in
2.) Got to https://commons.m.wikimedia.org/wiki/Special:UploadWizard
- Only half of the page is visible in horizontally as the min for the content is 750px which is higher than the width of the display.
- The user could use a page without the need for the horisontal scrolling