BLU J4 vs Xiaomi Mi 9
BLU J4
Xiaomi Mi 9
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 850, 900, 1800, 1900; CDMA 800 & TD-SCDMA
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3G networkHSDPA 850, 900, 1900, 2100HSDPA 850, 900, 1700(AWS), 1900, 2100
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4G network-LTE frequency band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 20(800), 28(700), 38(2600), 39(1900), 40(2300)
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HSDPA speed21.1 Mbps-
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HSUPA speed5.76 Mbps-
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EV-DO speed-3.1 Mbps download, 1.8 Mbps upload
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LTE speed-LTE
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2019-102019-2
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Status2019-102019-3
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Design
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BuildPlasticAluminium alloy, glass
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SIMDual SIM (Nano-SIM, dual stand-by)Dual SIM (Nano-SIM, dual stand-by)
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Height151 mm157.5 mm
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Width72.3 mm74.7 mm
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Thickness10 mm7.6 mm
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Weight158 g173 g
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ColorsBlack, Blue, BrownBlack, Blue, Violet
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Display
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Display typeIPS LCD capacitive touchscreenSuper AMOLED capacitive touchscreen
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Physical size5.5 inches6.39 inches
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Resolution720 x 1440 pixels1080 x 2340 pixels
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Pixel density293 ppi403 ppi
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Display colors1677721616777216
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Protection-Scratch resistant, 2.5D curved glass screen, Corning Gorilla Glass 5
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MultitouchYesYes
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Display features-HDR10, DCI-P3
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Hardware
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CPU-Octa-core
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CPUQuad-core 1.3 GHz Cortex-A7Single-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 1.8 GHz Kryo 485
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Chipset-Qualcomm SDM855 Snapdragon 855
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GPUMali-400Adreno 640
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Memory RAM1 GB6, 8 GB
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Internal storage32 GB64, 128 GB
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Memory cardmicroSD, microSDHC, microSDXCNo
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Memory card max64 GB-
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StorageeMMC 5.1-
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OS
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OSAndroid 8.1 Oreo Go EditionMIUI 10 (Android 9.0 Pie)
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Main camera
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Camera typeSingleTriple
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Main camera8 MP48 MP, f/1.8 , 1/2" , 0.8 µm, 2x optical zoom
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16 MP, f/2.2 , 13 mm, 1/3" , 1.0 µm
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12 MP, f/2.2 , 54 mm, 1/3.6" , 1.0 µm
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Primary camera resolution-8000 x 6000 pixels
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Primary camera video720p@30fps2160p@30/60fps, 1080p@30/120/240fps, 1080p@960fps
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Primary camera flashLED flashLED flash
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Camera features-Autofocus, continuous shooting, digital zoom, optical zoom, digital image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, macro mode, RAW
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DxOMark photo-115
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DxOMark video-99
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DxOMark camera score-110
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Selfie camera
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Selfie camera8 MP20 MP, f/2.0 , 0.9 µm
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Selfie camera resolution-5184 x 3880 pixels
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Selfie camera video720p@30fps1080p@30fps
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Sound
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3.5mm jackYesNo
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LoudspeakerYesYes
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EarpieceYesYes
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Headphone adapter-Yes
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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 HotspotYesYes
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WLAN WiFi DirectYesYes
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WLAN WiFi Dual Band-Yes
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WLAN DLNA-Yes
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USBmicroUSB 2.0Type-C 1.0 reversible connector
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USB On-The-Go-Yes
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Bluetoothv4.1v5.0
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Bluetooth A2DPYesYes
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bluetooth LEYesYes
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Bluetooth AptX-aptX HD
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Infrared-Yes
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NFC-Yes
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GPSYes, with A-GPSYes, with dual-band A-GPS
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GLONASS-Yes
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GALILEO-Yes
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Beidou-Yes
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QZSS-Yes
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Features
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SensorsAccelerometerAccelerometer, compass, gyroscope, fingerprint, 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 capacity2200 mAh3300 mAh
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Battery removableRemovableNon-removable
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Fast battery charging-Qualcomm Quick Charge 4+
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Wireless charging-Yes
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Cost
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Price75 USD-
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