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General |
Brand:vivo |
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Model:X21 |
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Color:Black,White,Red |
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System |
Funtouch OS 4.0 based on Android 8.1 OS |
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CPU:Qualcomm Snapdragon SDM660 AIE Octa Core(2.2GHz*4+1.8GHz*4) |
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RAM:6GB |
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ROM:128GB |
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Extended Storage:256GB |
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Display |
Screen type: 19:9 Capacitive screen |
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Screen size:6.28 inch |
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Screen resolution:FHD+ (2280 x 1080 pixels) screen display Super AMOLED |
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Network |
Wireless connectivity: GSM, 3G, 4G, GPS, WiFi, Bluetooth |
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Frequency: |
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2G: GSM 850/900/1800/1900MHz ； |
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3G: WCDMA 850/900/1900/2100MHz；, TD-SCDMA 1880/2010MHz； |
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4G: FDD-LTE B1/B2/B3/B4/B5/B8, TDD-LTE B34/B38/B39/B40/B41 |
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4G+ FDD-LTE;B1/B3/ B1+B3；4G+ TDD-LTE：B38/B39/B40/B41/B39+B41； |
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Bluetooth: Yes,5.0 |
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WiFi: Yes,WIFI/WAPI；802.11 a/b/g/n/ac 2.4G+5GHz |
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GPS: Yes,GPS/GLONASS |
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Camera |
Camera type:Dual cameras (one front Dual back) |
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Dual Back camera: 12.0MP+5.0MP |
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Front camera:12.0MP |
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Video recording:Yes |
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Connectivity |
SIM card slot:Dual SIM Card, Dual standby(2 Nano Sim Card / 1 Nano Sim and 1TF Card) |