a retired but very smart relative in cape coral has purchased a smart talk home plan from Wal Mart and can't get it working. IIUC this is effectively a tethered cell phone where you plug a box into the wall - not phone jack - and it transmits to a nearby cell tower as if it was a cell phone. You then plug in a house phone into the box, not to a phone jack, and that is your phone. $15 per month, $99 for the box. Everytime she uses it a voice operator comes on and said not installed yet. Am I missing something? BAD cell phone tower or not in range? I think ATT or Verizon. Comments?