Samsung Galaxy M31s vs vivo Y81
Samsung Galaxy M31s
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, Cat10, 452 Mbps download, 102 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 announced2020-072018-6
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Status2020-082018-6
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Design
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BuildPlasticAluminium alloy, plastic
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SIMSingle SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)Dual SIM (Nano-SIM, dual stand-by)
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Height159.3 mm155 mm
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Width74.4 mm75 mm
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Thickness9.3 mm7.77 mm
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Weight203 g146 g
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ColorsBlack, BlueBlack
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Display
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Display typeSuper AMOLED capacitive touchscreenIPS capacitive touchscreen
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Physical size6.5 inches6.22 inches
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Resolution1080 x 2400 pixels720 x 1520 pixels
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Pixel density405 ppi270 ppi
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Display colors1677721616777216
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Protection2.5D curved glass screen, Corning 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 2.3 GHz Cortex-A73Quad-core 2.0 GHz Cortex-A53
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CPU(second)quad-core 1.7 GHz Cortex-A53quad-core 1.5 GHz Cortex-A53
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ChipsetExynos 9611MediaTek Helio P22 MT6762
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GPUMali-G72 MP3PowerVR 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 10.0; One UI 2.0Android 8.1 Oreo
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Main camera
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Camera typeTriple-
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Main camera64 MP, f/1.8 , 26 mm, 1/1.72" , 0.8 µm13 MP, f/2.2
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8 MP, f/2.2
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5 MP, f/2.4
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5 MP, f/2.4
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Primary camera resolution9280 x 6944 pixels4160 x 3120 pixels
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Primary camera video4K@30fps, 1080p@30fps, gyro-EIS1080p@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, 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 camera32 MP, f/2.2 , 26 mm, 1/2.8" , 0.8 µm5 MP, f/2.2
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Selfie camera resolution6528 x 4896 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 1.0 reversible connectormicroUSB 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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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 capacity6000 mAh3260 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingYesYes
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Wireless reverse chargingYes-
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Talk time 4G51 h-
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Cost
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Price270 USD-
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Multimedia
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Radio-No