We have an update that is a first release with support for using any (modern) mobile phone as a client device. The screen size is very constrained, but each input mode now adapts to squeeze down to make it usable, if not marvellous. A tablet is still better, and this update makes tablet use better too, but if smartphones are all you have, you can use them.
Download the mobile phone test version. (Updated 18 May with some fixes for desktop mode) Now released as main version.
Please report any issues you find with this update.