Oppo A77s vs Samsung Galaxy M21s
Oppo A77s
Samsung Galaxy M21s
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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, 2100HSDPA 850, 900, 1700(AWS), 1900, 2100
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4G networkLTE frequency band 1, 3, 5, 7, 8, 28, 38, 40, 41LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 38, 40, 41, 66
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HSDPA speed42.2 Mbps42.2 Mbps
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HSUPA speed5.76 Mbps5.76 Mbps
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LTE speedLTELTE-A, 603 Mbps download, 150 Mbps upload
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2022-102020-11
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Status2022-102020-11
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Design
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BuildGlass front, plastic frame, plastic back or eco leather backGlass front (Gorilla Glass 3), plastic back, plastic frame
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SIMDual SIM (Nano-SIM, dual stand-by)Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)
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Height163.8 mm159.2 mm
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Width75 mm75.1 mm
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Thickness8 mm8.9 mm
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Weight187/190 g191 g
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WaterproofIP54-
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Dust proofIP54-
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ColorsBlack, OrangeBlack, Blue
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Display
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Display typeIPS LCDSuper AMOLED
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Physical size6.56 inches6.4 inches
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Resolution720 x 1612 pixels1080 x 2340 pixels
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Pixel density269 ppi403 ppi
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Display colors1677721616777216
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ProtectionScratch resistant, 2.5D curved glass screen2.5D curved glass screen, Corning Gorilla Glass 3
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Display features90Hz, 480 nits (typ), 600 nits (HBM)420 nits (typ), Infinity U Display
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Hardware
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CPUOcta-coreOcta-core
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CPUQuad-core 2.4 GHz Kryo 265 GoldQuad-core 2.3 GHz Cortex-A73
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CPU(second)quad-core 1.9 GHz Kryo 265 Silverquad-core 1.7 GHz Cortex-A53
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ChipsetQualcomm SM6225 Snapdragon 680 4GExynos 9611
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GPUAdreno 610Mali-G72 MP3
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Memory RAM8 GB4, 6 GB
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Internal storage128 GB64, 128 GB
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Memory cardmicroSD, microSDHC, microSDXCmicroSD, microSDHC, microSDXC
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Memory card max64 GB512 GB
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StorageUFS 2.2UFS 2.1
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OS
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OSAndroid 12, ColorOS 12.1Android 10, One UI 2.5
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Main camera
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Camera typeDualTriple
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Main camera(wide) , 50 MP, f/1.8 , 77˚(wide) , 64 MP, f/1.8 , 26 mm, 1/1.72" , 0.8 µm
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(depth) , 2 MP, f/2.4 , 89˚ , 1/5" , 1.75 µm(ultrawide) , 8 MP, f/2.2 , 1/4.0" , 1.12 µm
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(depth) , 5 MP, f/2.2
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Primary camera resolution-9280 x 6920 pixels
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Primary camera video1080p@30fps4K@30fps, 1080p@30fps, gyro-EIS
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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, phase detection autofocus
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Selfie camera
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Selfie camera typeSingleSingle
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Selfie camera(wide) , 8 MP, f/2.0 , 26 mm(wide) , 32 MP, f/2.0 , 26 mm, 1/2.8" , 0.8 µm
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Selfie camera resolution3264 x 2448 pixels-
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Selfie camera featuresPanorama-
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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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LoudspeakerYes, with stereo speakersYes
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EarpieceYesYes
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Multimedia
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RadioNoFM 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, 802.11n 5Ghz, 802.11ac
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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 2.0Type-C 2.0
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USB On-The-GoYes-
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Bluetoothv5.0v5.0
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Bluetooth A2DPYesYes
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bluetooth LEYesYes
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Bluetooth AptXaptX HD-
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NFCYesNo
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GPSYes, with A-GPSYes, with A-GPS
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GLONASSYesYes
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GALILEOYesYes
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BDSYesYes
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QZSSYes-
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Features
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SensorsAccelerometer, compass, fingerprint, proximityAccelerometer, 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 mAh6000 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingSuperVOOC, 33W (100% in 69 min)Fast Charging
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Tests and performance
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Antutu-186200 (v8)
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Geekbench(single-core)380 (v5.2)-
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Geekbench(multi-core)1657 (v5.2)-
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Cost
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Price220 USD280 USD