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Chip technology: The changeover to 5G demands semiconductor technique. It must be prepared with more and more higher frequencies. No network when Smartphone owner carried out public sale, his apparatus does not have straight connection to a base station. It happens also with auto radio when the installed transmitter as for example in a tunnel is not receivable. However, other than radio which intercept listen a frequency, the mobile telephone here are more flexible. These listen and broadcast simultaneously in many differing frequency ranges the so-called bands.
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