Samsung Galaxy A21s vs Samsung Galaxy S9
Samsung Galaxy A21s
Samsung Galaxy S9
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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, 1900, 2100HSDPA 850, 900, 1700(AWS), 1900, 2100
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4G networkLTE frequency band 1, 2, 3, 5, 7, 8, 20, 28, 38, 40, 41LTE
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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 speedLTE, Cat4, 151 Mbps download, 51 Mbps upload-
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LTE-A speed-LTE-A, (6CA) Cat18, 1200 Mbps download, 200 Mbps upload
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2020-052018-2
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Status2020-062018-3
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Design
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BuildPlasticFront/back glass (Gorilla Glass 5), aluminum frame
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SIMSingle SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)Single SIM (Nano-SIM) or Hybrid Dual SIM (Nano-SIM, dual stand-by)
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Height163.7 mm147.7 mm
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Width75.3 mm68.7 mm
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Thickness8.9 mm8.5 mm
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Weight192 g163 g
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Payment-Samsung Pay(Visa, Mastercard certified)
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Waterproof-IP68, 1.5m and 30 minutes
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Dust proof-Yes, IP68
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ColorsBlack, Blue, Red, WhiteCoral Blue, Lilac Purple, Midnight Black, Titanium Gray
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Display
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Display typePLS TFT capacitive touchscreenSuper AMOLED capacitive touchscreen
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Physical size6.5 inches5.8 inches
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Resolution720 x 1600 pixels1440 x 2960 pixels
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Pixel density270 ppi570 ppi
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Display colors1677721616777216
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Protection-Corning Gorilla Glass 5
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Multitouch-Yes
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Display features-HDR10 compliant, 3D Touch, Always-on display
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Hardware
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CPUOcta-coreOcta-core
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CPUQuad-core 2.0 GHz Cortex-A55Quad-core 2.7 GHz Mongoose M3
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CPU(second)quad-core 2.0 GHz Cortex-A55quad-core 1.8 GHz Cortex-A55
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ChipsetExynos 850Exynos 9810 Octa / Qualcomm SDM845 Snapdragon 845
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GPUMali-G52Mali-G72 MP18 / Adreno 630
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Memory RAM3, 4, 6 GB4 GB
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Internal storage32, 64 GB64, 128, 256 GB
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Memory cardmicroSD, microSDHC, microSDXCmicroSD(uses second SIM slot)
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Memory card max512 GB400 GB
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OS
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OSOne UI 2.0(Android 10)Android 8.0 (Oreo)
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Main camera
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Camera typeQuad-
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Camera type-Photo / Video
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Main camera48 MP, f/2.0 , 26 mm, 1/2.0" , 0.8 µm12 MP, f/1.5-2.4 , 26 mm, 1/2.5" , 1.4 µm
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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 resolution8000 x 6000 pixels4032 x 3024 pixels
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Primary camera video1080p@30fps2160p@60fps, 1080p@240fps, 720p@960fps
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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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Primary camera optical image stabilization-optical image stabilization
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Primary camera video dual video-dual-video record
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Primary camera video hdr-HDR
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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-modeAuto HDR, Geo-tagging, face/smile detection, panorama, simultaneous 4K video and 9MP image recording, touch focus
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Selfie camera
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Selfie camera13 MP, f/2.2 , 1/3.1" , 1.12 µm8 MP, f/1.7 , 1/3.6" , 1.22 µm, 25 mm
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Selfie camera resolution4160 x 3120 pixels3264 x 2448 pixels
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Secondary camera autofocus-autofocus
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Secondary camera dual video call-dual video call
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Secondary camera HDR-Auto HDR
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Selfie camera video1080p@30fps1440p@30fps
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes, with stereo speakers
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Notifications-Vibration; MP3, WAV ringtones
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EarpieceYesYes
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11nWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 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 1.0 reversible connectorType-C 1.0 reversible connector
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Bluetoothv5.0v5.0
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Bluetooth A2DPYesYes
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bluetooth LEYesYes
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Bluetooth AptX-Yes
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NFCYes (market dependent)Yes
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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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BeidouYes-
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BDS-Yes
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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 IM-IM
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Messaging Push Mail-Push Mail
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SensorsAccelerometer, fingerprint, geomagnetic, gyroscope, proximityIris scanner, SpO2, accelerometer, barometer, compass, fingerprint (rear-mounted), gyro, heart rate, 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 capacity5000 mAh3000 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingYesQuick Charge 2.0
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Wireless charging-Qi/PMA wireless charging
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Cost
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Price200 USD-
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Multimedia
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Radio FM-FM radio