Comment Comment by ConstantineXVI Most current (~2012) cellphones do in the US, see http://en.wikipedia.org/wiki/Commercial_Mobile_Alert_System(I'm unclear on how these are delivered within the network, seems to be SMS but I can't source that) parent ConstantineXVI 13 years ago
(I'm unclear on how these are delivered within the network, seems to be SMS but I can't source that)