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The reason cell phone reception is worse in a car is because the car's metal frame and skin act as a "faraday cage" which blocks and grounds out signals that are inside and outside of it. If you use a rooftop antenna it will get the signal out of the car. Many new cell phones only put out around on tenth of a watt, compared to in the old days when bag phones, if you are old enough to remember them, put out three watts. The newer phones just don't have enough power in some situations. You can use a booster or amplifier to boost the signal and that will help greatly.

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17y ago

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