Samsung Galaxy M21 vs Samsung Galaxy Z Flip4
Samsung Galaxy M21
Samsung Galaxy Z Flip4
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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 850, 900, 1900, 2100HSDPA 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1xEV-DO
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4G networkLTE frequency band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 38(2600), 40(2300), 41(2500)LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 28, 29, 34, 38, 39, 40, 41, 66
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5G network-5G band 1, 3, 20, 41, 77, 78, 79, 81 SA/NSA/Sub6/mmWave
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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-ALTE-A (6CA)
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2020-032022-08
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Status2020-032022-08
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Design
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BuildGlass front, plastic back, plastic framePlastic front (opened), glass back (Gorilla Glass Victus+), aluminum frame
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SIMDual SIM (Nano-SIM, dual stand-by)Nano-SIM, eSIM
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Height159 mm84.9 mm
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Width75.1 mm71.9 mm
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Thickness8.9 mm15.9-17.1 mm
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Height unfolded-165.2 mm
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Width unfolded-71.9 mm
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Thickness unfolded-6.9 mm
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Weight188 g187 g
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Payment-Samsung Pay (Visa, MasterCard certified)
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Waterproof-IPX8, 1.5m and 30 minutes
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ColorsBlack, BlueBlue, Pink Gold, Graphite, Khaki, Navy, Purple, Red, Yellow
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Display
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Display typeSuper AMOLED capacitive touchscreenFoldable Dynamic AMOLED 2X
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Physical size6.4 inches6.7 inches
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Resolution1080 x 2340 pixels1080 x 2640 pixels
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Pixel density403 ppi426 ppi
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Display colors1677721616777216
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Protection2.5D curved glass screen, Corning Gorilla Glass 3-
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MultitouchYes-
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Display features420 nits max brightness120Hz, HDR10+, 1200 nits (peak)
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Cover display-Super AMOLED
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Cover display physical size-1.9 inches
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Cover display resolution-260 x 512 pixels
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Hardware
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CPUOcta-coreOcta-core
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CPUQuad-core 2.3 GHz Cortex-A73Single-core 3.19 GHz Cortex-X2
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CPU(second)quad-core 1.7 GHz Cortex-A53Triple-core 2.75 GHz Cortex-A710
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CPU(third)Quad-core 1.8 GHz Cortex-A510
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ChipsetExynos 9611Qualcomm SM8475 Snapdragon 8+ Gen 1
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GPUMali-G72 MP3Adreno 730
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Memory RAM4, 6 GB8 GB
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Internal storage64, 128 GB128, 256, 512 GB
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Memory cardmicroSD, microSDHC, microSDXCNo
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Memory card max512 GB-
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StorageUFS 2.1UFS 3.1
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OS
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OSOne UI 2 (Android 10.0)Android 12, One UI 4.1.1
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Main camera
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Camera typeTripleDual
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Main camera48 MP, f/2.0 , 26 mm, 1/2.0" , 0.8 µm12 MP, f/1.8 , 24 mm, 1.8 µm, (wide) , 83˚ , 10x digital zoom
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8 MP, f/2.2 , 12 mm, 1/4.0" , 1.12 µm12 MP, f/2.2 , 1.12 µm, (ultrawide) , 123˚
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5 MP, f/2.2
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Primary camera resolution8000 x 6000 pixels4032 x 3024 pixels
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Primary camera video2160p@30fps, 1080p@30fps, gyro-EIS4K@30/60fps, 1080p@60/240fps, 720p@960fps, HDR10+
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Primary camera flashLED flashLED flash
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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-mode, phase detection autofocusAutofocus, continuous shooting, digital zoom, optical zoom, digital image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, phase detection autofocus, tracking autofocus
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Selfie camera
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Selfie camera type-Single
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Selfie camera20 MP, f/2.0 , 26 mm10 MP, f/2.4 , 26 mm, (wide) , 80˚ , 1.22 µm
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Selfie camera features-Autofocus, face unlock, HDR
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Selfie camera video1080p@30fps4K@30fps
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Sound
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3.5mm jackYesNo
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LoudspeakerYesYes
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EarpieceYesYes
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Multimedia
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RadioFM radio with RDSNo
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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, 802.11ax
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WLAN WiFi HotspotYesYes
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WLAN WiFi DirectYesYes
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WLAN WiFi Dual Band-Yes
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USBType-C 1.0 reversible connectorType-C 2.0
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USB On-The-Go-Yes
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Bluetoothv5.0v5.2
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Bluetooth A2DPYesYes
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bluetooth LEYesYes
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NFC-Yes
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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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BeidouYes-
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BDS-Yes
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Features
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SensorsAccelerometer, compass, fingerprint, gyroscope, proximityAccelerometer, barometer, 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 capacity6000 mAh3700 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingYesQuick Charge, 25W (50% in 30 min)
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Wireless reverse charging-Yes, 4.5W
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Fast wireless charging-Qi, 15W
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Cost
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Price180 USD1000 USD
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Tests and performance
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Antutu-1010000 (v9)
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Geekbench(single-core)-1277 (v5.4)
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Geekbench(multi-core)-3642 (v5.4)