Ultimadark Does remote preview work on whatever you are previewing with? Which CPU GPU is being utilized, the one where you are running the editor from or where you are opening the previewer?
I'm trying to imagine what the performance limits are on mobile and since I can't export to iOS right now on C3, remote preview could be a temporary workaround.
Remote preview utilizes the CPU/GPU on the device running the preview, not the device running the editor, so this is a way to try the performance of a C3 game on mobile.
What I was asking OP about was if he has exported his game to HTML (which is available in the free version of C3 as well) and then uploaded his game to a web server. This way you can run a game on the browser on a mobile device as well, though you need access to a web server which not everyone does.