For the past 2 hours, I have been unable to send or receive text messages and only this error message shows. All texts that I try to send are in the undeliverable folder. Is there some type of service outage in 22201- Northern VA?
More info. needed! Which device? That appears to be what some HTC owners have experienced, myself included on my EVO. In my case it has never lasted long. Have only seen the message when attempting to send texts or upload photos in a concentrated cell usage area, such as at NFL stadium or sports arenas.