TMobile/SpaceX proposed service does sound better than the one Apple currently provides. Apple's works right now though and T/S's doesn't which is a notable difference. I also haven't read anything about the T/S service that says they will exclude iPhones. As an iPhone user, I would love to have access to both services! It's unlikely I would switch to a different phone manufacturer to get access to this service if it isn't available to iphones, but i might switch to TMobile from my current mvno to get it on iphone.