Ulefone Armor 21 vs Xiaomi Redmi K40 Gaming
Ulefone Armor 21
Xiaomi Redmi K40 Gaming
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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, 28, 41, 77, 78 SA/NSA/Sub6
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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 announced2023-052021-04
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Status2023-052021-04
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Design
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BuildPolycarbonate, TPU, metalGlass front (Gorilla Glass 5), glass back (Gorilla Glass 5)
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SIMDual SIM (Nano-SIM, dual stand-by)Dual SIM (Nano-SIM, dual stand-by)
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Height176 mm161.9 mm
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Width81.6 mm76.9 mm
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Thickness18.1 mm8.3 mm
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Weight400 g205 g
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WaterproofIP68/IP69K (1.5m and 30 mins)IP53
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Dust proofIP68/IP69KIP53
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MIL-STD-810HYes-
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Build features-Physical pop-up gaming triggers
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ColorsBlackBlack, Gray, Silver, Yellow
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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 pixels1080 x 2400 pixels
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Pixel density401 ppi395 ppi
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Display colors167772161073741824
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ProtectionScratch resistantScratch resistant, 2.5D curved glass screen, Corning Gorilla Glass 5
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Display features-120Hz, HDR10+, 500 nits (typ)
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Hardware
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CPUOcta-coreOcta-core
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CPUDual-core 2.2 GHz Cortex-A76Single-core 3.0 GHz Cortex-A78
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CPU(second)Hexa-core 2.0 GHz Cortex-A55Triple-core 2.6 GHz Cortex-A78
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CPU(third)Quad-core 2.0 GHz Cortex-A55
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ChipsetMediaTek MT8781 Helio G99MediaTek MT6893 Dimensity 1200 5G
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GPUMali-G57 MC2Mali-G77 MC9
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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 11, MIUI 12.5
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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) , 64 MP, f/1.7 , 0.7 µm, 26 mm, 1/2"
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(night vision) , 24 MP, f/1.8(ultrawide) , 8 MP, f/2.2 , 120˚
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(macro) , 2 MP, f/2.4
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Primary camera resolution9280 x 6180 pixels9280 x 6920 pixels
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Primary camera video-4K@30fps, 1080p@30/60/120fps, 720p@960fps, HDR
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Primary camera flashLED flashdual-LED 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
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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 µm16 MP
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Selfie camera resolution4608 x 3456 pixels4608 x 3456 pixels
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Selfie camera featuresFace unlock, HDR, face detectionFace unlock, HDR
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Selfie camera video1080p@30fps1080p@30fps, 720p@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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InfraredYesYes
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NFCYesYes
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GPSYes, with A-GPSYes, with dual-band 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, barometer, 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 mAh5065 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingYes, 33WQuick Charge 3+ (100% in 42 min)
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Tests and performance
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Antutu370000 (v9)724495 (v9)
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Geekbench(single-core)567 (v5.2)874 (v5.2)
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Geekbench(multi-core)1857 (v5.2)3574 (v5.2)
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Cost
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Price240 USD470 USD