Should be pretty easy, but phones can be fussy at times. (Well, phone browsers that is) Usual hick-ups are graphics effects like shadow filters etc, and frame rate/synchronisation. I have to allow just a bit longer in case these are an issue, but from the outset I'd rate your animation as a pretty safe bet - (assuming your artwork is accessible of course)
Speaking of which - is you art in vector?
Regards
Tim