Warner Robins, GA
Unlocked Phones, etc.
To me, the whole digital phone business is grossly biased towards the providers, and fails to fulfill the promises made when the government allowed the conversion from analog phones to digital.
Most analog phones were allowed to "roam" on other networks (for a fee). Digital providers advertized "free roaming", then largely killed roaming on simcard phones. It's gotten so bad that the airports which had analog service, don't have digital service if your carrier doesn't have an agreement with the airport.
So much for "interoperability"!