Users should be able to edit Wikidata on mobile view. The current javascript interface cannot be adapted in the current state because it requires some dependencies like jquery.tipsy which are not supported on mobile. However, we should reuse as much javascript code as possible.
Proposed in Community-Wishlist-Survey-2016. Received 37 support votes, and ranked #42 out of 265 proposals. View full proposal with discussion and votes here.