BLU S91 Pro vs Microsoft Surface Duo 2
BLU S91 Pro
Microsoft Surface Duo 2
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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 850, 900, 1700, 1900, 2100HSDPA 850, 900, 1900, 2100
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4G networkLTE frequency band 1, 2, 3, 4, 5, 7, 12, 13, 17, 28, 66LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 42, 46, 48, 66, 71
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5G network-5G band 1, 2, 3, 5, 7, 20, 25, 28, 38, 41, 66, 71, 77, 78, 79 SA/NSA/Sub6 - global; 1, 2, 3, 5, 7, 20, 25, 28, 38, 41, 66, 71, 77, 78, 79, 257, 260, 261 SA/NSA/Sub6/mmWave - USA
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HSDPA speed42.2 Mbps42.2 Mbps
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HSUPA speed5.76 Mbps5.76 Mbps
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LTE speed-LTE-A (5CA) Cat20, 2000 Mbps download, 150 Mbps upload
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5G speed-6 Gbps download
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2022-072021-09
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Status2022-072021-10
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Design
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Build-Glass front (Gorilla Glass Victus), glass back (Gorilla Glass)
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SIMDual SIM (Nano-SIM, dual stand-by)Nano-SIM, eSIM
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Height164.7 mm145.2 mm
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Width76 mm93.1 mm
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Thickness8.9 mm11 mm
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Height unfolded-184.5 mm
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Width unfolded-145.2 mm
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Thickness unfolded-5.5 mm
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Weight202 g284 g
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Stylus-Yes
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ColorsBlack, GreenGlacier, Obsidian
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Display
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Display typeIPS LCDAMOLED capacitive touchscreen
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Physical size6.5 inches8.3 inches
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Resolution720 x 1600 pixels1892 x 2588 pixels
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Pixel density270 ppi401 ppi
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Display colors1677721616777216
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Protection-Corning Gorilla Glass Victus
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Display features-90Hz, HDR, 800 nits (peak)
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Cover display-AMOLED capacitive touchscreen
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Cover display physical size-5.8 inches
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Cover display resolution-1344 x 1892 pixels
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Hardware
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CPUOcta-coreOcta-core
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CPUQuad-core 2.3 GHz Cortex-A53Single-core 2.84 GHz Kryo 680
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CPU(second)quad-core 1.8 GHz Cortex-A53Triple-core 2.42 GHz Kryo 680
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CPU(third)Quad-core 1.80 GHz Kryo 680
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Chipset-Qualcomm SM8350 Snapdragon 888 5G
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GPU-Adreno 660
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Memory RAM4 GB8 GB
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Internal storage128 GB128, 256, 512 GB
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Memory cardmicroSD, microSDHC, microSDXCNo
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Memory card max256 GB-
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Storage-UFS
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OS
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OSAndroid 12Android 11
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Main camera
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Camera typeTripleTriple
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Main camera(wide) , 50 MP, f/1.8 , 0.7 µm(wide) , 12 MP, f/1.7 , 1.4 µm, 27 mm
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(ultrawide) , 2 MP, f/2.4 , 115˚(telephoto) , 12 MP, f/2.4 , 51 mm, 1.0 µm, 2x optical zoom
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(depth) , 0.8 MP, f/2.4(ultrawide) , 13 MP, f/2.2 , 1.0 µm
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Primary camera video1080p@30fps4K@30/60fps, 1080p@30/60/120/240fps, gyro-EIS, HDR
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Primary camera flashLED flash-
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Camera features-Autofocus, continuous shooting, digital zoom, digital image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, macro-mode, phase detection autofocus
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Selfie camera
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Selfie camera type-Single
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Selfie camera13 MP12 MP, (wide) , f/2.0 , 24 mm, 1.0 µm
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Selfie camera video1080p@30fps1080p@30fps
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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 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5Ghz, 802.11acWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz, 802.11ac, 802.11ax
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WLAN WiFi HotspotYesWi-Fi hotspot
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WLAN WiFi DirectYesWi-Fi direct
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WLAN WiFi Dual Band-Dual-band
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USBType-C 2.0Type-C 3.2, DisplayPort
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USB On-The-GoYes-
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Bluetoothv5.0v5.1
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Bluetooth A2DPYesA2DP
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bluetooth LEYesLE
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Bluetooth AptX-aptX Adaptive
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NFCNo-
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GPSYes, with A-GPSYes, with A-GPS
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Features
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SensorsAccelerometer, compass, fingerprint, proximityDual accelerometer, dual compass, fingerprint, dual gyroscope, dual proximity
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Browser
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HTMLHTML5HTML5
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Battery
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Battery typeLi-PoLi-Po
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Battery capacity5000 mAh4449 mAh
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Battery removableNon-removableNon-removable
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Fast battery charging-Yes, 23W
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Talk time 4G-28 h
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Cost
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Price180 USD1900 USD
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Tests and performance
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Antutu-750000 (v9)
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Geekbench(single-core)-1091 (v5.4)
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Geekbench(multi-core)-3517 (v5.4)
