Was there a mobile version of the web GUI at some point or is it around still. I thought I remember seeing this a while back. PitDroid doesn't work anymore and I dont feel like messing with it to try and figure it out.
It isn't formatted for mobile browsers, it is formatted for non-smartphone browsers. It is at http://xxxx/cgi-bin/luci/lm/light but I just checked it and it has a bug preventing it from rendering currently. This will be fixed in a snapshot coming today or tomorrow.