Message on their website for AT&T users: Dear Harbor Customer: Due to circumstances beyond our control, Harbor will no longer be able to provide AT&T mobile services to the public. At AT&T's direction, we have been instructed to inform you that you have until Sunday, May 8th, 11:59PM to sign on with another mobile provider. You may call 888-444-4410 dial 2 and then 5 to do a change of financial responsibility with AT&T. We apologize for this inconvenience and thank you for your support. P.S. This will not affect current T-Mobile lines For the T-Mobile side of Harbor Mobile a message says: "We are no longer accepting new T-Mobile activations."