Ulefone Armor 23 Ultra vs Xiaomi Redmi K40
Ulefone Armor 23 Ultra
Xiaomi Redmi K40
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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 800, 850, 1900, 2100HSDPA 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1x
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4G networkLTE frequency band 1, 3, 5, 7, 8, 20, 25, 26, 28, 34, 38, 39, 40, 41, 66LTE frequency band 1, 2, 3, 4, 5, 7, 8, 18, 19, 26, 28, 34, 38, 39, 40, 41, 42
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5G network5G band 1, 3, 5, 7, 8, 20, 28, 38, 77, 78 SA/NSA5G 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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LTE speedLTELTE-A, 1174 Mbps download, 210 Mbps upload
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GPRSYesYes
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EDGEYesClass 8
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Availability
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Oficially announced2023-032021-02
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Status2023-032021-03
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Design
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BuildPolycarbonate, TPU, metalGlass, Metal
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SIMDual SIM (Nano-SIM, dual stand-by)Dual SIM (Nano-SIM, dual stand-by)
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Height-163.7 mm
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Width-76.4 mm
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Thickness-7.8 mm
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Weight-196 g
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WaterproofIP68/IP69K-
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Dust proofIP68/IP69K-
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MIL-STD-810HYes-
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ColorsBlackAurora, Black, White
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Display
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Display typeAMOLEDSuper AMOLED
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Physical size6.67 inches6.67 inches
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Resolution1080 x 2400 pixels1080 x 2400 pixels
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Pixel density395 ppi395 ppi
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Display colors1677721616777216
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ProtectionScratch resistantScratch resistant, 3D curved glass screen, Corning Gorilla Glass 5
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Display features-120Hz, HDR10+, 1300 nits (peak), sunscreen 3.0, night light screen
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Hardware
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CPUOcta-coreOcta-core
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CPUSingle-core 2.99 GHz Cortex-X2Single-core 3.2 GHz Kryo 585
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CPU(second)Triple-core 2.5 GHz Cortex-A710Triple-core 2.42 GHz Kryo 585
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CPU(third)Quad-core 1.78 GHz Cortex-A510Quad-core 1.80 GHz Kryo 585
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ChipsetQualcomm Snapdragon 8 Gen 1Qualcomm SM8250-AC Snapdragon 870 5G
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GPUAdreno 730Adreno 650
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Internal storage1024 GB128, 256 GB
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Memory RAM16 GB6, 8, 12 GB
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Memory cardNoNo
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StorageUFS 2.1UFS 3.1
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OS
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OSAndroid 13Android 11, MIUI 12
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Main camera
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Camera typeTripleTriple
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Main camera108 MP48 MP, (wide) , f/1.8 , 26 mm, 1/2" , 0.8 µm
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(ultrawide) , 64 MP(ultrawide) , 8 MP, f/2.2 , 119˚
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(periscope telephoto) , 64 MP(macro) , 5 MP, 50 mm, 1/5.0" , 1.12 µm
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Primary camera resolution12000 x 9000 pixels8000 x 6000 pixels
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Primary camera video-4K@30fps, 1080p@30/60/120/240/960fps, gyro-EIS
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Primary camera flashdual-LED flashLED flash
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Camera featuresAutofocus, 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, 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 camera16 MP20 MP, (wide) , 1/3.4" , 0.8 µm
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Selfie camera resolution4608 x 3456 pixels5184 x 3880 pixels
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Selfie camera featuresFace unlock, 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 jackNoNo
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LoudspeakerYesYes, with stereo speakers
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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 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz, 802.11ac, 802.11axWi-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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Bluetoothv5.2v5.1
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Bluetooth A2DPYesYes
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bluetooth LEYesYes
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Infrared-Yes
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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, geomagnetic, gravity, gyroscope, light, pedometer, 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 capacity7000 mAh4520 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingYes, 120WQuick Charge 3.0 (100% in 52 min)
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Tests and performance
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Antutu463000 (v9)673599 (v8)
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Geekbench(single-core)-928 (v5.2)
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Geekbench(multi-core)-3260 (v5.2)
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Cost
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Price500 USD470 USD