Mobile phones or car phones take their power directly from the car battery. They're wired to the vehicle's ignition and shut off when the car is turned off, unless you have a feature called call-in-progress protection that lets you continue your call. The biggest advantage of a mobile phone is that it can transmit at a higher power level than a portable phone. This can be an important benefit when you're on the fringes of a wireless system, since the extra power can help connect calls and improve sound quality in areas of weak reception or interference. For convenience and safety, car phones offer hands-free operation, like a speakerphone. The positioning of the speaker and the microphone are critical to the sound quality, so it's important to ensure that it's properly installed. For more information on mobile phones, consult your local wireless phone dealer.
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