Cubot J20 vs Fairphone 4
Cubot J20
Fairphone 4
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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, 1700(AWS), 1900, 2100
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4G networkLTE frequency band 1, 3, 5, 7, 8, 19, 20, 40LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 18, 19, 20, 28, 32, 38, 40, 41, 71
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5G network-5G band 1, 3, 5, 7, 8, 20, 28, 38, 41, 71, 77, 78 SA/NSA/Sub6
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HSDPA speed21.1 Mbps42.2 Mbps
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HSUPA speed5.76 Mbps5.76 Mbps
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LTE speed-LTE-A (4CA), Cat18, 1200 Mbps download, 150 Mbps upload
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5G speed-2.3 Gbps download
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2023-032021-09
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Status2023-032021-09
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Design
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BuildPlasticGlass front (Gorilla Glass 5), plastic back, plastic frame
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SIMDual SIM (Nano-SIM, dual stand-by)Dual SIM (Nano-SIM, dual stand-by)
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Height138 mm162 mm
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Width65 mm75.5 mm
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Thickness10.8 mm10.5 mm
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Weight143 g225 g
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Waterproof-IP54
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Dust proof-IP54
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MIL-STD-810G-Yes
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ColorsBlack, GreenGray, Green, Speckled Green
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Display
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Display typeIPS TFTIPS LCD
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Physical size4 inches6.3 inches
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Resolution480 x 584 pixels1080 x 2340 pixels
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Pixel density245 ppi409 ppi
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Display colors1677721616777216
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Protection-Scratch resistant, Corning Gorilla Glass 5
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Hardware
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CPU-Octa-core
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CPUQuad-core 1.3 GHz Cortex-A53Dual-core 2.2 GHz Kryo 570
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CPU(second)Hexa-core 1.8 GHz Kryo 570
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ChipsetMediatek MT6739WAQualcomm SM7225 Snapdragon 750G 5G
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GPUPowerVR GE8100Adreno 619
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Internal storage16 GB128, 256 GB
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Memory RAM2 GB6, 8 GB
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Memory cardmicroSD, microSDHC, microSDXCmicroSD, microSDHC, microSDXC
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Memory card max128 GB2 TB
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OS
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OSAndroid 12 Go EditionAndroid 11
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Main camera
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Camera typeSingleTriple
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Main camera5 MP48 MP, (wide) , f/1.6 , 1/2.0" , 0.8 µm, 8x digital zoom
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(ultrawide) , 48 MP, f/2.2 , 120˚ , 1/2.0" , 0.8 µm
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TOF 3D
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Primary camera resolution2560 x 1920 pixels8000 x 6000 pixels
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Primary camera video720p@30fps4K@30fps, 1080p@30/60fps, gyro-EIS
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Primary camera flashLED flashdual-LED dual-tone flash
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Camera featuresAutofocus, geotagging, HDR, touch focus, face detection, self-timerAutofocus, continuous shooting, digital zoom, digital image stabilization, optical image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, scene-mode, phase detection autofocus
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Selfie camera
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Selfie camera typeSingleSingle
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Selfie camera2 MP25 MP, (wide) , f/2.2 , 1/2.78" , 0.9 µm
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Selfie camera resolution1920 x 1080 pixels-
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Selfie camera featuresFace unlockDigital image stabilization, face detection, face unlock, HDR
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Selfie camera video480p@30fps1080p@30fps, gyro-EIS
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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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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 Direct-Yes
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WLAN WiFi Dual Band-Yes
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USBmicroUSB 2.0Type-C 3.0, DisplayPort
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Bluetoothv4.2v5.1
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Bluetooth A2DPYesYes
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bluetooth LE-Yes
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NFCYesYes
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GPSYes, with A-GPSYes, with A-GPS
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GLONASS-Yes
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GALILEO-Yes
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BDS-Yes
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Features
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SensorsAccelerometer, lightAccelerometer, compass, fingerprint, gyroscope, proximity
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Browser
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HTMLHTML5HTML5
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Battery
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Battery typeLi-PoLi-Ion
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Battery capacity2350 mAh3905 mAh
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Battery removableRemovableRemovable
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Fast battery charging-Quick Charge, 20W (50% in 30 min)
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Talk time 3G-30 h
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Talk time 4G-13 h
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Standby time 4G-200 h
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Tests and performance
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Antutu46844 (v8)385000 (v9)
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Geekbench(single-core)157 (v5.2)642 (v5.4)
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Geekbench(multi-core)380 (v5.2)1878 (v5.4)
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Cost
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Price65 USD670 USD
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SAR value
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SAR EU(head)-0.49 W/kg
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SAR EU(body)-0.99 W/kg
