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Field strength
– The communicator is connected to a cellular network. When all
the four bars are shown, the cellular signal reception is good. If
the signal is weak, make sure the antenna is up. You can also try
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to improve the reception by moving the communicator slightly
or by using it in the handsfree mode.
– The phone is on, but it is outside network coverage.
– The phone is off. The communicator cannot send or receive calls
or messages.