User blog comment:Blondwave/Merry Christmas 2018!!!/@comment-34854065-20190211163637/@comment-26630331-20190211164819

No, you don't have to be on computer. Honestly, I think that everything here can be done on phone as well as on PC.

How to add it? I'll tell you how to find a detailed instructions: Click on page Help (in the top menu: General -> Help), then on Contributing, then on Blogs in Formatting window. There it is. ;)