Oppo A77 4G vs Samsung Galaxy A21
Oppo A77 4G
Samsung Galaxy A21
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 850, 900, 1800, 1900; CDMA 800, 1900
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3G networkHSDPA 800, 850, 900, 1700(AWS), 1900, 2100HSDPA 850, 900, 1700(AWS), 1900, 2100 - USA; CDMA2000 1xEV-DO
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4G networkLTE frequency band 1, 3, 5, 8, 38, 40, 41LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 38, 39, 40, 41, 66, 71 - USA
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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, Cat4, 151 Mbps download, 51 Mbps upload
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2022-082020-04
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Status2022-082020-06
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Design
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BuildGlass front, plastic frame, plastic or leather backGlass front, 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 mm167.8 mm
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Width75.1 mm76.7 mm
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Thickness8 mm8.1 mm
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Weight187/189 g193 g
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WaterproofIP54-
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Dust proofIP54-
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ColorsBlue, OrangeBlack
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Display
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Display typeIPS LCDIPS LCD capacitive touchscreen
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Physical size6.56 inches6.5 inches
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Resolution720 x 1612 pixels720 x 1600 pixels
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Pixel density269 ppi270 ppi
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Display colors1677721616777216
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ProtectionScratch resistant, 2.5D curved glass screen-
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Display features90Hz, 480 nits (typ), 600 nits (HBM)-
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Hardware
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CPUOcta-coreOcta-core
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CPUQuad-core 2.3 GHz Cortex-A53Quad-core 2.3 GHz Cortex-A53
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CPU(second)quad-core 1.8 GHz Cortex-A53quad-core 1.8 GHz Cortex-A53
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ChipsetMediaTek MT6765G Helio G35MediaTek Helio P35
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GPUPowerVR GE8320PowerVR GE8320
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Internal storage64 GB32 GB
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Memory RAM4 GB3 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 2.2eMMC 5.1
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OS
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OSAndroid 12, ColorOS 12.1One UI 2.0(Android 10)
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Main camera
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Camera typeDualQuad
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Main camera(wide) , 50 MP, f/1.8 , 81˚16 MP, f/1.8 , 1/3.06" , 1.0 µm
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(depth) , 2 MP, f/2.4 , 89˚8 MP, f/2.2 , 1/4.0" , 1.12 µm
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2 MP, f/2.4
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2 MP, f/2.4
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Primary camera resolution-4608 x 3456 pixels
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Primary camera video1080p@30fps1080p@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
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Selfie camera
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Selfie camera typeSingle-
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Selfie camera(wide) , 2 MP, f/2.413 MP, f/2.0
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Selfie camera resolution-4160 x 3120 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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RadioNo-
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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 802.11b, 802.11g, 802.11n
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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 1.0 reversible connector
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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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NFCYesYes (market dependent)
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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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Beidou-Yes
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BDSYes-
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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 mAh4000 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingSuperVOOC, 33W (100% in 69 min)Yes
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Cost
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Price200 USD140 USD
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