Not only was there various test modes for handsets, but older tuners would easily access the bands used for analog cellular communication. These bands used to b

Not only was there various test modes for handsets, but older tuners would easily access the bands used for analog cellular communication. These bands used to be used for UFH range used for analog television until those upper channels were trimmed to make way for cellular. I'm sure someone with criminal intent could have made a small fortune skimming credit card numbers off the open air.