The general theory as I've heard it is iPhone users are far more likely to actually use their phone's features which puts a heavier load on networks that are ov

The general theory as I've heard it is iPhone users are far more likely to actually use their phone's features which puts a heavier load on networks that are over subscribed based on a usage model of less data per device. I tend to believe this is true because on my last phone, which I know DID support MMS, I never saw a GUI option for it.