Not really, a phone isn't assigned a random number from a pool every time you turn it on or reconnect to a tower, then given to other users ad hoc. A static IP

Not really, a phone isn't assigned a random number from a pool every time you turn it on or reconnect to a tower, then given to other users ad hoc. A static IP maybe, except the IP is portable to a new AS if/when you want to move to a new provider. It's even susceptible to a false BGP route =)