Just purchased a new 2018 MS 100D on 12/21/18. My understanding is that I have pre-paid LTE streaming service for 1 year after purchase, then I must pay an annual subscription fee to continue after that. Does anyone know the service provider Tesla uses for the LTE streaming? Do you have a choice of provider after the initial year? What is the typical annual cost? Is there a phone number attached to the streaming service, as in cellphone service?