Samsung Galaxy M51 vs vivo Y81
Samsung Galaxy M51
vivo Y81
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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, 2100
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4G networkLTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 26, 28, 38, 40, 41, 66LTE frequency band 1(2100), 3(1800), 5(850), 7(2600), 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 speed5.76 Mbps-
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LTE speedLTE-A, (2CA) Cat6, 400 Mbps download, 50 Mbps uploadLTE, Cat7, 301 Mbps download, 102 Mbps upload
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2020-082018-6
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Status2020-092018-6
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Design
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BuildGlass front (Gorilla Glass 3), plastic back, plastic frameAluminium alloy, plastic
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SIMDual SIM (Nano-SIM, dual stand-by)Dual SIM (Nano-SIM, dual stand-by)
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Height163.9 mm155 mm
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Width76.3 mm75 mm
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Thickness9.5 mm7.77 mm
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Weight213 g146 g
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ColorsBlack, BlueBlack
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Display
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Display typeSuper AMOLED PlusIPS capacitive touchscreen
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Physical size6.7 inches6.22 inches
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Resolution1080 x 2400 pixels720 x 1520 pixels
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Pixel density393 ppi270 ppi
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Display colors1677721616777216
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ProtectionCorning Gorilla Glass 3Corning Gorilla Glass
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Multitouch-Yes
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Hardware
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CPUOcta-coreOcta-core
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CPUQuad-core 2.2 GHz Kryo 470 GoldQuad-core 2.0 GHz Cortex-A53
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CPU(second)Hexa-core 1.8 GHz Kryo 470 Silverquad-core 1.5 GHz Cortex-A53
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ChipsetQualcomm SDM730 Snapdragon 730GMediaTek Helio P22 MT6762
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GPUAdreno 618PowerVR GE8320
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Memory RAM6, 8 GB3 GB
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Internal storage128 GB32 GB
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Memory cardmicroSD, microSDHC, microSDXCmicroSD, microSDHC, microSDXC
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Memory card max512 GB256 GB
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StorageUFS 2.1eMMC 5.1
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OS
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OSAndroid 10, One UI 2.5Android 8.1 Oreo
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Main camera
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Camera typeQuad-
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Main camera(wide) , 64 MP, f/1.8 , 26 mm, 1/1.73" , 0.8 µm13 MP, f/2.2
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(ultrawide) , 12 MP, f/2.2 , 123˚ , 1.12 µm
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(macro) , 5 MP, f/2.4
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(depth) , 5 MP, f/2.4 , 1.12 µm
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Primary camera resolution9280 x 6944 pixels4160 x 3120 pixels
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Primary camera video4K@30fps, 1080p@30fps1080p@30fps
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Primary camera flashLED flashLED flash
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Camera featuresAutofocus, 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 autofocusAutofocus, continuous shooting, digital zoom, optical image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode
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Selfie camera
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Selfie camera(wide) , 32 MP, f/2.0 , 26 mm, 1/2.8" , 0.8 µm5 MP, f/2.2
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Selfie camera resolution6560 x 4928 pixels2592 x 1944 pixels
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Selfie camera video4K@30fps, 1080p@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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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
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WLAN WiFi HotspotYesYes
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WLAN WiFi DirectYesYes
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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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Bluetoothv5.0v4.2
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Bluetooth A2DPYesYes
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bluetooth LEYes-
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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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SensorsAccelerometer, compass, fingerprint, gyroscope, proximityAccelerometer, gyroscope, light, 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 mAh3260 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingYes (100% in 115 min)Yes
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Reverse chargingYes-
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DxOMark autonomy96-
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DxOMark charging61-
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DxOMark efficiency87-
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DxOMark battery score88-
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Tests and performance
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Antutu275000 (v8)-
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Geekbench(single-core)1592 (v5.2)-
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Geekbench(multi-core)4211 (v5.2)-
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SAR value
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SAR(head)1.38 W/kg-
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SAR EU(head)0.61 W/kg-
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SAR EU(body)1.45 W/kg-
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Cost
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Price440 USD-
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Multimedia
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Radio-No
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