and I already had Google Ajax API CDN selected in Performance. I tried using the other Jquery Sources, same issue. I cleaned the cache on the phone each time too. I also disabled all addons and I'm still getting the Load Jquery First error.
If jquery works OK in a regular browser and your phone is using the same forum style then I see no reason why it should fail unless there is a browser bug or compatibility issue. Unfortunately I don't have a smart phone to test this.