A method of operating a mobile terminal includes receiving mobile communications and transmitting mobile communications in a first mode of operation, and enabling at least one function that is not available in the first mode of operation while preventing transmission of mobile communications in a second mode of operation. The first mode of operation is activated responsive to receiving a valid authorization code in the second mode of operation. Related devices and computer program products are also discussed.

 
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< Interface for message authorizing

> Multi-channel quiet calls

> Folding cellular phone

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