Only 20 percent of the readership of the English-language Wikipedia comes via mobile devices, a figure substantially lower than the percentage of mobile traffic for other media sites, many of which approach 50 percent. And the shift to mobile editing has lagged even more.
The concern in the Wikipedia movement and among people who study it is that smartphones and tablets are designed for “consumer behavior” rather than “creative behavior.” In other words, mobile users are much more likely to read a Wikipedia article than improve it.
It's more difficult to edit on a smaller screen but not impossible. That's what apps are for. That's what blank screens are for, to inspire creativity.
I've been doing more and more on my Smartphone and I expect it to be just as optimal as a desktop. But do they?