>>ADAS Plus Make Driving Safer. ADAS Keep Your Driving More Safer. 3G /WCDMA:2100(B1)/900(B8); 4G/LTE:FDD,2100(B1)/1800(B3). Otherwise, the car dvr will not identify your sim card. you could make and receive calls directly from the mirror dvr itself with the built-in MIC and speaker.
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