Cheers, I was vaguely aware of a recently-released app that added MMS support to the N900...I'll look into installing it.
I'm pretty sure now that it's his iPhone settings, because when I texted him (via SMS) he replied no problem... so it's obviously when he's composing a new message it's sending as MMS.
Anybody (sarah!) care to tell me how to change the default setting so I can pass it on?
