BLU F91 vs Ulefone Armor 21
BLU F91
Ulefone Armor 21
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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, 1700(AWS), 1900, 2100HSDPA 850, 900, 1700(AWS), 1900, 2100
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4G networkLTE frequency band 2, 4, 5, 12, 13, 17, 25, 26, 41, 66, 71LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 17, 19, 20, 28, 34, 38, 39, 40, 41, 66
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5G network5G band 2, 5, 25, 41, 66, 71, 77 SA/NSA/Sub6-
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HSDPA speed42.2 Mbps-
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HSUPA speed5.76 Mbps-
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EV-DO speed-EV-DO Rev.A 3.1 Mbps download, 1.8 Mbps upload
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LTE speedLTELTE
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GPRSNoYes
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EDGEYesYes
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Availability
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Oficially announced2022-042023-05
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Status2022-042023-05
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Design
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Build-Polycarbonate, TPU, metal
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SIMDual SIM (Nano-SIM, dual stand-by)Dual SIM (Nano-SIM, dual stand-by)
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Height168.7 mm176 mm
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Width76.8 mm81.6 mm
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Thickness8.9 mm18.1 mm
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Weight209 g400 g
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Waterproof-IP68/IP69K (1.5m and 30 mins)
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Dust proof-IP68/IP69K
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MIL-STD-810H-Yes
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ColorsBlueBlack
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Display
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Display typeIPS LCDIPS LCD
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Physical size6.8 inches6.58 inches
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Resolution1080 x 2460 pixels1080 x 2408 pixels
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Pixel density395 ppi401 ppi
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Display colors1677721616777216
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Protection-Scratch resistant
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Hardware
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CPUOcta-coreOcta-core
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CPUDual-core 2.4 GHz Cortex-A76Dual-core 2.2 GHz Cortex-A76
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CPU(second)Hexa-core 2.0 GHz Cortex-A55Hexa-core 2.0 GHz Cortex-A55
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ChipsetMediaTek MT6833P Dimensity 810MediaTek MT8781 Helio G99
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GPUMali-G57 MC2Mali-G57 MC2
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Memory RAM8 GB8 GB
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Internal storage128 GB256 GB
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Memory cardmicroSD, microSDHC, microSDXCmicroSD, microSDHC, microSDXC
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Memory card max256 GB2 TB
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OS
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OSAndroid 11Android 13
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Main camera
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Camera typeQuadDual
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Main camera(wide) , 48 MP, f/1.8 , 1/2.0" , 0.8 µm, 30x digital zoom(wide) , 64 MP, f/1.9 , 0.8 µm
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(ultrawide) , 5 MP, f/2.2 , 115˚(night vision) , 24 MP, f/1.8
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(macro) , 2 MP, f/2.4
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(depth) , 2 MP, f/2.4
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Primary camera resolution8000 x 6000 pixels9280 x 6180 pixels
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Primary camera video4K@30fps, 1080p@30fps-
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Primary camera flashLED flashLED flash
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Camera features-Autofocus, 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 autofocus
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Selfie camera
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Selfie camera typeSingleSingle
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Selfie camera16 MP, f/2.016 MP, f/2.2 , (wide) , 1.0 µm
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Selfie camera resolution-4608 x 3456 pixels
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Selfie camera features-Face unlock, HDR, 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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RadioFM RadioStereo FM radio, RDS, recording
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11n, 802.11acWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5Ghz, 802.11ac
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WLAN WiFi HotspotYesYes
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WLAN WiFi DirectYes-
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WLAN WiFi Dual Band-Yes
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USBType-C 2.0Type-C 2.0
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USB On-The-GoYesYes
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Bluetoothv5.1v5.2
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Bluetooth A2DPYesYes
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bluetooth LELEYes
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Infrared-Yes
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NFCYesYes
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GPSYes, with A-GPSYes, with A-GPS
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GLONASS-Yes
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GALILEO-Yes
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BDS-Yes
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Features
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SensorsAccelerometer, compass, fingerprint, gyroscope, proximityAccelerometer, barometer, 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 capacity5000 mAh9600 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingYes, 18WYes, 33W
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Reverse chargingYes-
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Fast wireless chargingYes, 10W-
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Tests and performance
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Antutu379387 (v9)370000 (v9)
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Geekbench(single-core)572 (v5.2)567 (v5.2)
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Geekbench(multi-core)1670 (v5.2)1857 (v5.2)
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Cost
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Price220 USD240 USD