Ulefone Armor 21 vs Xiaomi Redmi K50 Pro
Ulefone Armor 21
Xiaomi Redmi K50 Pro
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 850, 900, 1800, 1900; CDMA 800
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3G networkHSDPA 850, 900, 1700(AWS), 1900, 2100HSDPA 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1x
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4G networkLTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 17, 19, 20, 28, 34, 38, 39, 40, 41, 66LTE frequency band 1, 2, 3, 4, 5, 7, 8, 18, 19, 26, 34, 38, 39, 40, 41, 42
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5G network-5G band 1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA
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HSDPA speed-42.2 Mbps
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HSUPA speed-5.76 Mbps
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EV-DO speedEV-DO Rev.A 3.1 Mbps download, 1.8 Mbps upload-
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LTE speedLTELTE-A, 211 Mbps upload
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2023-052022-03
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Status2023-052022-03
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Design
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BuildPolycarbonate, TPU, metalGlass front (Gorilla Glass Victus), glass back
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SIMDual SIM (Nano-SIM, dual stand-by)Dual SIM (Nano-SIM, dual stand-by)
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Height176 mm163.1 mm
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Width81.6 mm76.2 mm
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Thickness18.1 mm8.5 mm
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Weight400 g201 g
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WaterproofIP68/IP69K (1.5m and 30 mins)-
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Splash resistant-IP53
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Dust proofIP68/IP69KIP53
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MIL-STD-810HYes-
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ColorsBlackBlack, Blue, Gray, Green
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Display
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Display typeIPS LCDOLED
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Physical size6.58 inches6.67 inches
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Resolution1080 x 2408 pixels1440 x 3200 pixels
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Pixel density401 ppi526 ppi
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Display colors1677721616777216
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ProtectionScratch resistantScratch resistant, 2.5D curved glass screen, Corning Gorilla Glass Victus
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Display features-120Hz, Dolby Vision, HDR10+, 1200 nits (peak)
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Hardware
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CPUOcta-coreOcta-core
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CPUDual-core 2.2 GHz Cortex-A76Single-core 3.05 GHz Cortex-X2
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CPU(second)Hexa-core 2.0 GHz Cortex-A55Triple-core 2.85 GHz Cortex-A710
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CPU(third)Quad-core 1.80 GHz Cortex-A510
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ChipsetMediaTek MT8781 Helio G99MediaTek Dimensity 9000
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GPUMali-G57 MC2Mali-G710 MC10
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Memory RAM8 GB8, 12 GB
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Internal storage256 GB128, 256, 512 GB
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Memory cardmicroSD, microSDHC, microSDXCNo
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Memory card max2 TB-
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Storage-UFS 3.1
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OS
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OSAndroid 13Android 12, MIUI 13
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Main camera
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Camera typeDualTriple
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Main camera(wide) , 64 MP, f/1.9 , 0.8 µm(wide) , 108 MP, f/1.79 , 0.7 µm, 26 mm, 1/1.52"
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(night vision) , 24 MP, f/1.8(ultrawide) , 8 MP, 119˚
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(macro) , 2 MP, f/2.4
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Primary camera resolution9280 x 6180 pixels12000 x 9000 pixels
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Primary camera video-4K@30fps, 1080p@30/60/120fps, 720p@960fps; gyro-EIS
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Primary camera flashLED flashLED flash
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Camera featuresAutofocus, 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 autofocusAutofocus, continuous shooting, digital zoom, digital image stabilization, optical image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, phase detection autofocus, flicker sensor
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Selfie camera
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Selfie camera typeSingleSingle
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Selfie camera(wide) , 16 MP, f/2.2 , 1.0 µm(wide) , 20 MP
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Selfie camera resolution4608 x 3456 pixels-
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Selfie camera featuresFace unlock, HDR, face detectionFace unlock, HDR
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Selfie camera video1080p@30fps1080p@30/120fps
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Sound
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3.5mm jackYesNo
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LoudspeakerYesYes, with stereo speakers
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EarpieceYesYes
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Multimedia
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RadioStereo FM radio, RDS, recordingNo
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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 HotspotYesYes
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WLAN WiFi Direct-Yes
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WLAN WiFi Dual BandYesYes
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USBType-C 2.0Type-C 2.0
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USB On-The-GoYesYes
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Bluetoothv5.2v5.3
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Bluetooth A2DPYesYes
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bluetooth LEYesYes
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InfraredYesYes
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NFCYesYes
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GPSYes, with A-GPSYes, with A-GPS
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GLONASSYesYes
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GALILEOYesYes
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BDSYesYes
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QZSS-Yes
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NavIC-Yes
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Features
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SensorsAccelerometer, barometer, compass, fingerprint, gyroscope, proximityAccelerometer, color spectrum, 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 capacity9600 mAh4520 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingYes, 33WQuick Charge 3+, 120W (100% in 19 min)
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Tests and performance
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Antutu370000 (v9)1013488 (v9)
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Geekbench(single-core)567 (v5.2)1239 (v5.2)
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Geekbench(multi-core)1857 (v5.2)4181 (v5.2)
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Cost
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Price240 USD480 USD