Hi @benny_1,
Sorry for the delay in response. When you say "it is not possible to login to the UI" do you mean the KMC since it is written in Flash? if so, then you can either use https://github.com/kaltura/chunked-file-upload-jquery, put the code on your webserver and simply direct mobile users to the index page or you can use the mobile SDK to write a small app that will do the same.
We've also began work on KMC-ng which will no longer require Flash at all and so will be usable from mobile devices as well.