Ulefone Armor 15 vs vivo X21 UD
Ulefone Armor 15
vivo X21 UD
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 850, 900, 1800, 1900; CDMA 800 & TD-SCDMA
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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, 13, 17, 18, 19, 20, 25, 26, 28, 38, 39, 40, 41, 66LTE frequency band 1(2100), 2(1900), 3(1800), 5(850), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)
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HSDPA speed42.2 Mbps-
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HSUPA speed11.52 Mbps-
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HSPA speed-HSPA
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LTE speedLTE, Cat13, 300 Mbps download, 150 Mbps uploadLTE
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2022-072018-3
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Status2022-102018
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Design
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BuildAluminium alloy, reinforced polycarbonate, TPUFront glass, aluminum body
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SIMDual SIM (Nano-SIM, dual stand-by)Hybrid Dual SIM (Nano-SIM, dual stand-by)
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Height170.2 mm154.5 mm
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Width79.6 mm74.8 mm
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Thickness18.2 mm7.4 mm
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Weight346 g156.2 g
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WaterproofIP68 (1.5m and 35 minutes)-
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Dust proofIP68-
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MIL-STD-810GYes-
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Build featuresBuilt-in wireless earbuds housed inside the top side of the phone; charging-
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ColorsBlack, Blue, RedAurora White, Black, Ruby Red
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Display
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Display typeIPS LCDSuper AMOLED capacitive touchscreen
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Physical size5.45 inches6.28 inches
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Resolution720 x 1440 pixels1080 x 2280 pixels
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Pixel density295 ppi402 ppi
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Display colors1677721616777216
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Multitouch-Yes
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Hardware
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CPUOcta-coreOcta-core
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CPUQuad-core 2.3 GHz Cortex-A53Quad-core 2.2 GHz Kryo 260
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CPU(second)quad-core 1.8 GHz Cortex-A53quad-core 1.8 GHz Kryo 260
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ChipsetMediaTek MT6765G Helio G35Qualcomm SDM660 Snapdragon 660
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GPUPowerVR GE8320Adreno 512
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Memory RAM6 GB6 GB
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Internal storage128 GB128 GB
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Memory cardmicroSD, microSDHC, microSDXCmicroSD(uses second SIM slot)
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Memory card max-256 GB
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OS
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OSAndroid 12Android 8.1 (Oreo)
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Main camera
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Camera typeDualDual
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Main camera12 MP, f/1.8 , 1.4 µm12 MP, f/1.8 , 1.4 µm, 1/2.5"
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(ultrawide) , 13 MP, f/2.4 , 106˚5 MP, f/2.4
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Primary camera resolution4160 x 3120 pixels4032 x 3024 pixels
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Primary camera video1080p@30fps1080p@30fps
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Primary camera Autofocus-dual pixel phase detection autofocus
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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-modeGeo-tagging, HDR, face detection, panorama, touch focus
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Selfie camera
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Selfie camera typeSingle-
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Selfie camera16 MP, f/2.4 , 1.0 µm12 MP, f/2.0
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Selfie camera resolution4608 x 3456 pixels4032 x 3024 pixels
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Selfie camera featuresFace unlock-
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Selfie camera video1080p@30fps1080p@30fps
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Sound
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3.5mm jackNoYes
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LoudspeakerYesYes
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Notifications-Vibration; MP3, WAV ringtones
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EarpieceYesYes
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Multimedia
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RadioStereo FM radio, RDS, recording-
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Radio FM-FM 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 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac
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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 2.0microUSB 2.0
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USB On-The-GoYesYes
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Bluetoothv5.0v5.0
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Bluetooth A2DPYesYes
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bluetooth LE-Yes
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NFCYes-
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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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Messaging SMS-SMS(threaded view)
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Messaging MMS-MMS
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Messaging Email-Email
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Messaging Push Email-Push Email
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SensorsAccelerometer, compass, fingerprint, gyroscope, proximityFingerprint (under display), accelerometer, compass, 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 capacity6600 mAh3200 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingYes, 18WYes
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Tests and performance
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Antutu122000 (v9)-
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Geekbench(single-core)177 (v5.2)-
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Geekbench(multi-core)991 (v5.2)-
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Cost
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Price300 USD-
