I have an htc evo and I am not able to send video mms to iphone users. I tried changing the quality of my videos to the lowest setting to see if that would work. It doesn't. The videos I would try sending would be less than 10 seconds long. The message I would receive is "The receiving service provider for xxx-xxx-xxxx has a size limit for picture/video. Your message may not be received." A few of the individuals say that they are able to receive video messages and have no issues. What gives?