I know it worked long after they supposedly dropped service on my old Amps66 bag phone. If you dialed 911 it went through and if you tried a regular number you got a recording telling you to enter a credit card for a $3 a minute phone call. I carried that in my boat and car until I stopped getting dial tone. It lasted about 2 years after the official end of service. I never actually made a call but I would check it now and then. One day it just stopped. I thought it was the perfect phone plan and the old Amps66 phone would get out when your little flip phone showed no service, particularly in a boat with a marine antenna.