Ulefone Armor 21 vs ZTE Blade A51
Ulefone Armor 21
ZTE Blade A51
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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 850, 900, 1700(AWS), 1900, 2100HSDPA 850, 900, 1900, 2100
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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, 3, 5, 7, 8, 20, 28, 38, 40, 41
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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, Cat6, 301 Mbps download, 51 Mbps upload
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2023-052021-05
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Status2023-052021-05
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Design
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BuildPolycarbonate, TPU, metalPolycarbonate
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SIMDual SIM (Nano-SIM, dual stand-by)Dual SIM (Nano-SIM, dual stand-by)
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Height176 mm166.5 mm
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Width81.6 mm75.6 mm
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Thickness18.1 mm8.5 mm
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Weight400 g173 g
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WaterproofIP68/IP69K (1.5m and 30 mins)-
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Dust proofIP68/IP69K-
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MIL-STD-810HYes-
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ColorsBlackBlue, Gray
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Display
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Display typeIPS LCDIPS LCD
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Physical size6.58 inches6.52 inches
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Resolution1080 x 2408 pixels720 x 1600 pixels
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Pixel density401 ppi269 ppi
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Display colors1677721616777216
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ProtectionScratch resistant-
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Hardware
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CPUOcta-coreOcta-core
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CPUDual-core 2.2 GHz Cortex-A76Quad-core 1.6 GHz Cortex-A55
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CPU(second)Hexa-core 2.0 GHz Cortex-A55quad-core 1.2 GHz Cortex-A55
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ChipsetMediaTek MT8781 Helio G99Unisoc SC9863A
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GPUMali-G57 MC2IMG8322
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Memory RAM8 GB2 GB
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Internal storage256 GB32, 64 GB
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Memory cardmicroSD, microSDHC, microSDXCmicroSD, microSDHC, microSDXC
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Memory card max2 TB512 GB
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OS
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OSAndroid 13Android 11 Go Edition
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Main camera
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Camera typeDualDual
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Main camera(wide) , 64 MP, f/1.9 , 0.8 µm13 MP
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(night vision) , 24 MP, f/1.82 MP
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Primary camera resolution9280 x 6180 pixels4160 x 3120 pixels
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Primary camera video-1080p@30fps
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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, 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 µm5 MP, f/2.0 , 1.0 µm
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Selfie camera resolution4608 x 3456 pixels2560 x 1920 pixels
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Selfie camera featuresFace unlock, HDR, face detectionFace unlock, face detection
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Selfie camera video1080p@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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RadioStereo FM radio, RDS, recordingFM Radio
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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 802.11b, 802.11g, 802.11n
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WLAN WiFi HotspotYesYes
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WLAN WiFi Dual BandYes-
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USBType-C 2.0Type-C 2.0
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USB On-The-GoYesYes
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Bluetoothv5.2v4.2
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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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GALILEOYes-
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BDSYes-
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Features
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SensorsAccelerometer, barometer, compass, fingerprint, gyroscope, proximityAccelerometer, fingerprint, proximity
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Browser
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HTMLHTML5HTML5
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Battery
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Battery typeLi-PoLi-Ion
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Battery capacity9600 mAh3200 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingYes, 33WYes
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Tests and performance
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Antutu370000 (v9)101300 (v8)
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Geekbench(single-core)567 (v5.2)147 (v5.2)
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Geekbench(multi-core)1857 (v5.2)808 (v5.2)
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Cost
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Price240 USD90 USD
