Re: service near the south rim of the grand canyon



Dave Rudisill wrote:
What does "switch systems" mean? My phone is a tri-mode and has always
worked in analog areas in the past. At the South Rim, I had a big "No
service" displayed on the phone.

Switching systems means switching from the B side AMPS carrier to the A side AMPS carrier.

On my Verizon phone, it's set to the B side for AMPS. Sometimes you have to change it to the A side if the AMPS carrier in the area that you're in uses the A side.

On the Motorola tri-mode phones it's under Settings>Network Options>Set Mode.

If you have AC (not AC2) then you should be able to get AMPS at the Grand Canyon by switching to the A side. Even on AC2 you may be able to call 911, but off-network AMPS roaming on AC2 doesn't seem to exist. On AC, you may be charged for roaming onto non-Verizon AMPS.
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