Realme C21 vs Samsung Galaxy A25
Realme C21
Samsung Galaxy A25
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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, 20, 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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5G network-5G band 1, 3, 5, 7, 8, 26, 28, 40, 41, 66, 77, 78 SA/NSA/Sub6
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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, 150 Mbps download, 51 Mbps uploadLTE, 1174 Mbps download, 211 Mbps upload
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2021-032023-12
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Status2021-032023-12
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Design
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BuildGlass front, plastic back, plastic frameGlass front, plastic frame, plastic back
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SIMDual SIM (Nano-SIM, dual stand-by)Single SIM (Nano-SIM) or Hybrid Dual SIM (Nano-SIM, dual stand-by)
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Height165.2 mm161 mm
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Width76.4 mm76.5 mm
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Thickness8.9 mm8.3 mm
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Weight190 g197 g
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ColorsBlack, BlueBlack, Fantasy Blue, Optimistic Blue, Personality Yellow
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Display
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Display typeIPS LCDSuper AMOLED
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Physical size6.5 inches6.5 inches
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Resolution720 x 1600 pixels1080 x 2340 pixels
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Pixel density270 ppi396 ppi
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Display colors1677721616777216
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ProtectionScratch resistant, 2.5D curved glass screen, Corning Gorilla Glass 32.5D curved glass screen
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Hardware
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CPUOcta-coreOcta-core
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CPUQuad-core 2.3 GHz Cortex-A53Dual-core 2.4 GHz Cortex-A78
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CPU(second)quad-core 1.8 GHz Cortex-A53Hexa-core 2.0 GHz Cortex-A55
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ChipsetMediaTek Helio G35Exynos 1280
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GPUPowerVR GE8320Mali-G68
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Memory RAM3, 4 GB6, 8 GB
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Internal storage32, 64 GB128, 256 GB
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Memory cardmicroSD, microSDHC, microSDXCmicroSD, microSDHC, microSDXC
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Memory card max256 GB2 TB
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StorageeMMC 5.1-
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OS
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OSAndroid 10, Realme UI 1.0 / Android 11, Realme UI 2.0Android 14, One UI 6
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Main camera
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Camera typeTripleTriple
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Main camera(wide) , 13 MP, f/2.2 , 26 mm, 1/3.06" , 1.12 µm(wide) , 50 MP, f/1.8 , 27 mm, 1/2.76" , 0.64 µm
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(macro) , 2 MP, f/2.4(ultrawide) , 8 MP, f/2.2 , 120˚ , 1/4" , 1.12 µm
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(depth) , 2 MP, f/2.4(macro) , 2 MP, f/2.4
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Primary camera resolution2560 x 1920 pixels8190 x 6120 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 featuresAutofocus, 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, digital image stabilization, optical image stabilization, 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) , 5 MP, f/2.2 , 1/5.0" , 1.12 µm(wide) , 13 MP, f/2.2 , 1/3.06" , 1.12 µm
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Selfie camera resolution2560 x 1920 pixels4160 x 3120 pixels
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Selfie camera featuresFace unlock, HDR, panoramaFace unlock, HDR, face detection
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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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LoudspeakerYesYes
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EarpieceYesYes
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Multimedia
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RadioFM Radio-
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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, 802.11n 5Ghz, 802.11ac
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WLAN WiFi HotspotYesYes
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WLAN WiFi Direct-Yes
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USBmicroUSB 2.0Type-C 2.0
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USB On-The-GoYes-
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Bluetoothv5.0v5.3
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Bluetooth A2DPYesYes
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bluetooth LEYesYes
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NFCNo-
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GPSYes, with A-GPSYes, with A-GPS
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GLONASSYesYes
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GALILEO-Yes
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BDSYesYes
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QZSS-Yes
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Features
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SensorsAccelerometer, compass, fingerprint, proximityAccelerometer, compass, fingerprint, gyroscope, virtual proximity sensing
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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 mAh5000 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingYesYes, 25W
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Reverse chargingYes-
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Talk time 4G-38 h
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Tests and performance
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Antutu110490 (v8)415000 (v9)
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Geekbench(single-core)174 (v5.2)737 (v5.4)
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Geekbench(multi-core)982 (v5.2)2166 (v5.4)
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Cost
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Price130 USD250 USD
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SAR value
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SAR EU(head)-0.46 W/kg
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SAR EU(body)-1.19 W/kg