Bravis NB871 4G vs Microsoft Surface Duo
Bravis NB871 4G
Microsoft Surface Duo
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 850, 900, 1800, 1900
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3G networkHSDPA 900, 2100HSDPA 850, 900, 1900, 2100
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4G networkLTE frequency band 1(2100), 3(1800), 7(2600)LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 19 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 46, 66
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HSDPA speed21 Mbps42.2 Mbps
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HSUPA speed5.76 Mbps5.76 Mbps
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LTE speedLTE Cat4, 150.8 Mbps download, 51.0 Mbps uploadLTE-A (CA) Cat18, 1200 Mbps download, 100 Mbps upload
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GPRSYesYes
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EDGE-Yes
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Availability
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Oficially announced2018-102020-08
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Status2018-102020-08
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Design
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BuildPlasticGlass front (Gorilla Glass 5), glass back (Gorilla Glass 5)
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SIMDual SIM (dual stand-by)Nano-SIM, eSIM
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Height122.8 mm145.2 mm
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Width206.5 mm93.3 mm
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Thickness7.7 mm9.9 mm
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Height unfolded-186.9 mm
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Width unfolded-145.2 mm
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Thickness unfolded-4.8 mm
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Weight332 g250 g
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Stylus-Yes
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ColorsBlackWhite
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Display
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Display typeIPS capacitive touchscreenAMOLED capacitive touchscreen
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Physical size8 inches8.1 inches
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Resolution1280 x 800 pixels1800 x 2700 pixels
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Pixel density189 ppi401 ppi
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Display colors1677721616777216
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Protection-Corning Gorilla Glass 5
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MultitouchYes-
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Cover display-AMOLED capacitive touchscreen
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Cover display physical size-5.6 inches
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Cover display resolution-1350 x 1800 pixels
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Hardware
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CPU-Octa-core
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CPUQuad-core 1.3 GHz Cortex-A53Single-core 2.84 GHz Kryo 485
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CPU(second)Triple-core 2.42 GHz Kryo 485
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CPU(third)Quad-core 1.78 GHz Kryo 485
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ChipsetMediatek MT8735Qualcomm SM8150 Snapdragon 855
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GPUMali-T720 MP2Adreno 640
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Memory RAM1 GB6 GB
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Internal storage16 GB128, 256 GB
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Memory cardmicroSD, microSDHC, microSDXCNo
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Memory card max32 GB-
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Storage-UFS 3.0
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OS
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OSAndroid 8.1 OreoAndroid 10
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Main camera
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Camera typeSingleSingle
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Main camera2 MP11 MP, f/2.0 , 23 mm, 1.0 µm
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Primary camera resolution1600 x 1200 pixels-
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Primary camera video720p@30fps4K@30/60fps, 1080p@30/60fps, gyro-EIS
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Primary camera flashLED flash-
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Camera featuresContinuous shooting, digital zoom, geotagging, panorama, HDR, face detection, white balance settings, ISO settings, self-timer-
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Selfie camera
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Selfie camera0.3 MP
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Selfie camera resolution640 x 480 pixels-
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Selfie camera video480p@30fps4K@30/60fps, 1080p@30/60fps, gyro-EIS
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Sound
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3.5mm jackYes-
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LoudspeakerYesYes, with stereo speakers
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EarpieceYes-
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Multimedia
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RadioFM RadioNo
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11nWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5Ghz, 802.11ac
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WLAN WiFi Hotspot-Yes
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WLAN WiFi Direct-Yes
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WLAN WiFi Dual Band-Yes
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USBmicroUSB 2.0Type-C reversible connector
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USB On-The-GoYes-
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Bluetoothv4.0v5.0
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Bluetooth A2DPYesYes
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bluetooth LE-Yes
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Bluetooth AptX-aptX Adaptive
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GPSYes, with A-GPSYes, with A-GPS
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Features
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SensorsAccelerometerAccelerometer, fingerprint, proximity
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Browser
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HTMLHTML5HTML5
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Battery
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Battery typeLi-IonLi-Po
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Battery capacity4000 mAh3577 mAh
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Battery removableNon-removableNon-removable
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Fast battery charging-Yes
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Cost
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Price-1400 USD
