RAP on Mobile Device Browsers
There is a common look and feel, as well as certain features, that most mobile applications have in common, even across different platforms. RAP should, within its capabilities, aim to conform to those. As of RAP 1.5, support and features for iOs is mostly solid, while Android still has some more severe issues. This is partially due to some bugs of its default browser that are hard to work around. Other devices have not been tested. Due to emerging alternatives, support for mobile browser is currently not the main focus of RAP core development.
An overview of mobile-related bugs can be found in bugzilla.