I have done it already on a smart phone. But I don't think it is fun to "design" or develop a survey on a mobile phone or tablet. But for small changes or adjustment of configurations on the go it should work. I wouldn't want to create surveys on a mobile device though.
I answer at the LimeSurvey forum in my spare time, I'm not a LimeSurvey GmbH employee.
No support via private message.