Ulefone Armor 21 vs Xiaomi Redmi K40S
Ulefone Armor 21
Xiaomi Redmi K40S
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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, 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
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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 5), plastic back
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SIMDual SIM (Nano-SIM, dual stand-by)Dual SIM (Nano-SIM, dual stand-by)
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Height176 mm163.2 mm
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Width81.6 mm76 mm
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Thickness18.1 mm7.7 mm
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Weight400 g195 g
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WaterproofIP68/IP69K (1.5m and 30 mins)-
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Splash resistant-Yes
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Dust proofIP68/IP69K-
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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 LCDAMOLED
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Physical size6.58 inches6.67 inches
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Resolution1080 x 2408 pixels1080 x 2400 pixels
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Pixel density401 ppi395 ppi
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Display colors1677721616777216
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ProtectionScratch resistantScratch resistant, 2.5D curved glass screen, Corning Gorilla Glass 5
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Display features-120Hz, HDR10+, 1300 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 3.2 GHz Kryo 585
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CPU(second)Hexa-core 2.0 GHz Cortex-A55Triple-core 2.42 GHz Kryo 585
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CPU(third)Quad-core 1.80 GHz Kryo 585
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ChipsetMediaTek MT8781 Helio G99Qualcomm SM8250-AC Snapdragon 870 5G
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GPUMali-G57 MC2Adreno 650
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Memory RAM8 GB6, 8, 12 GB
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Internal storage256 GB128, 256 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) , 48 MP, f/1.8 , 0.8 µm, 1/2"
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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 pixels8000 x 6000 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 flashdual-LED dual-tone 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, optical 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
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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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Bluetoothv5.2v5.2
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Bluetooth A2DPYesYes
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bluetooth LEYesYes
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InfraredYes-
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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 mAh4500 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingYes, 33WQuick Charge 3+, 67W (100% in 38 min)
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Tests and performance
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Antutu370000 (v9)715000 (v9)
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Geekbench(single-core)567 (v5.2)983 (v5.2)
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Geekbench(multi-core)1857 (v5.2)3362 (v5.2)
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Cost
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Price240 USD290 USD