T-Mobile CEO promised that the service will come free with T-Mobile's popular plans. For low-cost plans that don't include it, the carrier may charge for the service, but for far lower prices than satellite services do.
SpaceX chief Elon Musk tweeted that connectivity will be 2 to 4 Megabits per cell zone, which isn't a high bandwidth if shared by multiple people, but is enough for texting and calling.