i'm having this issue too! but the only thing that seems to be different from everyone elses situation is that until about a month and a half ago, i COULD send mms to iphones! then all the sudden in about early january, my friend w/ the iphone started to not be able to get my mms. i've tried everything from resetting thru cust services instruction, to resizing the pics, to changing the msg app i'm using (used stock messager, then chomp, then handset), also have (thru suggestion of another forum) sent mms w/ a subject and text w/in the mms. i called verizon and they said that there is no error message on their end and that it is at&ts fault somehow (i have no idea if this is true). i tried to send the mms to another person who had an iphone just to be sure and the same thing happened. a friend of mine who owns an eris also is going through this. however this does not seem to be the case for moto droid users. i dont know if this is something that will be fixed in whatever update we're waiting for, but its been going on for me for about a month and a half and i'm so tired of calling tech support and waiting for some update. (and yes, my phone is currently up to date) all i can think to do is any eris user who is having this problem call it in so they can log it, and have your iphone friends do the same so they can create a ticket on there end!