Samsung Galaxy M51 vs Samsung Galaxy Quantum 2
Samsung Galaxy M51
Samsung Galaxy Quantum 2
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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, 1700(AWS), 1900, 2100HSDPA 850, 900, 1700(AWS), 1900, 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, 2, 3, 4, 5, 7, 8, 12, 17, 20, 26, 28, 38, 40, 41, 66
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5G network-5G band 78 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-A, (2CA) Cat6, 400 Mbps download, 50 Mbps uploadLTE-A, 2000 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 announced2020-082021-04
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Status2020-092021-04
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Design
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BuildGlass front (Gorilla Glass 3), plastic back, plastic frame-
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SIMDual SIM (Nano-SIM, dual stand-by)Nano-SIM
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Height163.9 mm161.9 mm
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Width76.3 mm73.8 mm
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Thickness9.5 mm8.1 mm
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Weight213 g176 g
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ColorsBlack, BlueBlack, Violet, White
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Display
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Display typeSuper AMOLED PlusDynamic AMOLED 2X
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Physical size6.7 inches6.7 inches
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Resolution1080 x 2400 pixels1440 x 3200 pixels
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Pixel density393 ppi524 ppi
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Display colors1677721616777216
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ProtectionCorning Gorilla Glass 3-
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Display features-120Hz, 1200 nits (peak), 120Hz@FHD / 60Hz@QHD refresh rate
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Hardware
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CPUOcta-coreOcta-core
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CPUQuad-core 2.2 GHz Kryo 470 GoldSingle-core 2.96 GHz Kryo 485
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CPU(second)Hexa-core 1.8 GHz Kryo 470 SilverTriple-core 2.42 GHz Kryo 485
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CPU(third)Quad-core 1.78 GHz Kryo 485
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ChipsetQualcomm SDM730 Snapdragon 730GQualcomm SM8150 Snapdragon 855+ (7 nm), QRNG security chipset
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GPUAdreno 618Adreno 640
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Memory RAM6, 8 GB6 GB
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Internal storage128 GB128 GB
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Memory cardmicroSD, microSDHC, microSDXCmicroSD, microSDHC, microSDXC
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Memory card max512 GB1 TB
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StorageUFS 2.1-
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OS
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OSAndroid 10, One UI 2.5Android 11, One UI 3.1
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Main camera
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Camera typeQuadTriple
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Main camera(wide) , 64 MP, f/1.8 , 26 mm, 1/1.73" , 0.8 µm(wide) , 64 MP, f/1.8 , 26 mm, 1/1.7x" , 0.8 µm
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(ultrawide) , 12 MP, f/2.2 , 123˚ , 1.12 µm(ultrawide) , 12 MP, f/2.2 , 123˚ , 1.12 µm
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(macro) , 5 MP, f/2.4(macro) , 5 MP, f/2.4
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(depth) , 5 MP, f/2.4 , 1.12 µm
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Primary camera resolution9280 x 6944 pixels-
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Primary camera video4K@30fps, 1080p@30fps4K@30fps, 1080p@30/60/240fps; gyro-EIS
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Primary camera flashLED flashLED flash
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Camera featuresAutofocus, continuous shooting, 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 autofocusHDR, Panorama
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Selfie camera
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Selfie camera type-Single
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Selfie camera(wide) , 32 MP, f/2.0 , 26 mm, 1/2.8" , 0.8 µm(wide) , 10 MP, f/2.2
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Selfie camera resolution6560 x 4928 pixels-
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Selfie camera features-HDR
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Selfie camera video4K@30fps, 1080p@30fps1080p@30fps
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Sound
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3.5mm jackYesNo
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LoudspeakerYesYes, with stereo speakers
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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, 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-GoYesYes
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Bluetoothv5.0v5.0
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Bluetooth A2DPYesYes
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bluetooth LEYesYes
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NFCYesYes
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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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Features
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SensorsAccelerometer, compass, fingerprint, gyroscope, 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 capacity7000 mAh4500 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingYes (100% in 115 min)Fast Charging
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Reverse chargingYes-
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Talk time 4G-46 h
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DxOMark autonomy96-
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DxOMark charging61-
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DxOMark efficiency87-
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DxOMark battery score88-
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Tests and performance
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Antutu275000 (v8)476000 (v8)
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Geekbench(single-core)1592 (v5.2)-
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Geekbench(multi-core)4211 (v5.2)-
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SAR value
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SAR(head)1.38 W/kg-
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SAR EU(head)0.61 W/kg-
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SAR EU(body)1.45 W/kg-
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Cost
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Price440 USD620 USD
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Multimedia
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Radio-No