Cubot J20 vs Ulefone Armor 21
Cubot J20
Ulefone Armor 21
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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, 17, 19, 20, 28, 34, 38, 39, 40, 41, 66
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HSDPA speed21.1 Mbps-
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HSUPA speed5.76 Mbps-
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EV-DO speed-EV-DO Rev.A 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 announced2023-032023-05
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Status2023-032023-05
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Design
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BuildPlasticPolycarbonate, TPU, metal
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SIMDual SIM (Nano-SIM, dual stand-by)Dual SIM (Nano-SIM, dual stand-by)
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Height138 mm176 mm
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Width65 mm81.6 mm
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Thickness10.8 mm18.1 mm
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Weight143 g400 g
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Waterproof-IP68/IP69K (1.5m and 30 mins)
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Dust proof-IP68/IP69K
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MIL-STD-810H-Yes
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ColorsBlack, GreenBlack
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Display
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Display typeIPS TFTIPS LCD
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Physical size4 inches6.58 inches
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Resolution480 x 584 pixels1080 x 2408 pixels
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Pixel density245 ppi401 ppi
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Display colors1677721616777216
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Protection-Scratch resistant
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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 Cortex-A76
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CPU(second)Hexa-core 2.0 GHz Cortex-A55
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ChipsetMediatek MT6739WAMediaTek MT8781 Helio G99
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GPUPowerVR GE8100Mali-G57 MC2
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Memory RAM2 GB8 GB
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Internal storage16 GB256 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 13
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Main camera
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Camera typeSingleDual
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Main camera5 MP64 MP, (wide) , f/1.9 , 0.8 µm
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(night vision) , 24 MP, f/1.8
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Primary camera resolution2560 x 1920 pixels9280 x 6180 pixels
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Primary camera video720p@30fps-
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Primary camera flashLED flashLED flash
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Camera featuresAutofocus, geotagging, HDR, touch focus, face detection, self-timerAutofocus, continuous shooting, digital zoom, 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 typeSingleSingle
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Selfie camera2 MP16 MP, (wide) , f/2.2 , 1.0 µm
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Selfie camera resolution1920 x 1080 pixels4608 x 3456 pixels
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Selfie camera featuresFace unlockFace unlock, HDR, face detection
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Selfie camera video480p@30fps1080p@30fps
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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EarpieceYesYes
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Multimedia
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RadioFM RadioStereo FM radio, RDS, recording
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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 Dual Band-Yes
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USBmicroUSB 2.0Type-C 2.0
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USB On-The-Go-Yes
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Bluetoothv4.2v5.2
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Bluetooth A2DPYesYes
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bluetooth LE-Yes
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Infrared-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, barometer, 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-Po
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Battery capacity2350 mAh9600 mAh
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Battery removableRemovableNon-removable
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Fast battery charging-Yes, 33W
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Tests and performance
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Antutu46844 (v8)370000 (v9)
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Geekbench(single-core)157 (v5.2)567 (v5.2)
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Geekbench(multi-core)380 (v5.2)1857 (v5.2)
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Cost
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Price65 USD240 USD
