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unusual facts about iPhone 4S



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GSM frequency bands

As a more recent example the Apple iPhone 5 and iPhone 4S support quad-band GSM at 850/900/1,800/1,900 MHz, quad-band UMTS/HSDPA/HSUPA at 850/900/1,900/2,100 MHz, and dual-band CDMA EV-DO Rev. A at 800/1,900 MHz, for a total of 'six' different frequencies (though at most four in a single mode).


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