Samsung Galaxy S21 Ultra 5G vs Xiaomi Poco X4 GT
Samsung Galaxy S21 Ultra 5G
Xiaomi Poco X4 GT
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Network
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2G networkGSM 850, 900, 1800, 1900; CDMA 800, 1900 & TD-SCDMAGSM 850, 900, 1800, 1900
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3G networkHSDPA 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1xEV-DOHSDPA 850, 900, 1700(AWS), 1900, 2100
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4G networkLTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71LTE frequency band 1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40, 41
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5G network5G band SA/NSA/Sub6/mmWave5G band 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 77, 78 SA/NSA
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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 (CA), 2000 Mbps download, 200 Mbps uploadLTE-A
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2021-012022-06
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Status2021-012022-06
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Design
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BuildGlass front (Gorilla Glass Victus), glass back (Gorilla Glass), aluminum framePlastic, aluminium alloy, glass
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SIMSingle SIM (Nano-SIM and/or eSIM) or Dual SIM (Nano-SIM and/or eSIM, dual stand-by)Dual SIM (Nano-SIM, dual stand-by)
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Height165.1 mm163.6 mm
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Width75.6 mm74.3 mm
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Thickness8.9 mm8.9 mm
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Weight227 (Sub6) / 229 (mmWave) g200 g
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PaymentSamsung Pay (Visa, MasterCard certified)-
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WaterproofIP68 (1.5m and 30 mins)-
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Dust proofIP68-
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ColorsBlack, Brown, Silver, Navy, TitaniumBlack, Blue, Silver
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Display
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Display typeDynamic AMOLED 2XIPS LCD
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Physical size6.8 inches6.6 inches
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Resolution1440 x 3200 pixels1080 x 2460 pixels
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Pixel density515 ppi407 ppi
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Display colors167772161073741824
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ProtectionScratch resistant, Corning Gorilla Glass VictusScratch resistant, 2.5D curved glass screen, Corning Gorilla Glass 5
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Display features120Hz, HDR10+, 1500 nits (peak), Infinity-O display, Always-On display144Hz, HDR10, Dolby Vision, 500 nits (typ), 650 nits (HBM)
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DxOMark display score91-
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Hardware
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CPUOcta-coreOcta-core
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CPUSingle-core 2.9 GHz Cortex-X1Quad-core 2.85 GHz Cortex-A78
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CPU(second)Triple-core 2.80 GHz Cortex-A78quad-core 2.0 GHz Cortex-A55
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CPU(third)Quad-core 2.2 GHz Cortex-A55
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ChipsetExynos 2100MediaTek Dimensity 8100
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GPUMali-G78 MP14Mali-G610 MC6
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Memory RAM12, 16 GB8 GB
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Internal storage128, 256, 512 GB128, 256 GB
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Memory cardNoNo
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StorageUFS 3.1UFS 3.1
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OS
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OSAndroid 11, One UI 3.1Android 12, MIUI 13 for POCO
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Main camera
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Camera typeQuadTriple
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Main camera(wide) , 108 MP, f/1.8 , 26 mm, 1/1.33" , 0.8 µm(wide) , 64 MP, f/1.9 , 1/1.72" , 0.8 µm
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(periscope telephoto) , 10 MP, f/4.9 , 1/3.24" , 1.22 µm, 10x optical zoom(ultrawide) , 8 MP, f/2.2 , 1/4.0" , 1.12 µm, 120˚
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(telephoto) , 10 MP, f/2.4 , 70 mm, 1/3.24" , 1.22 µm, 3x optical zoom(macro) , 2 MP, f/2.4
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(ultrawide) , 12 MP, f/2.2 , 13 mm, 1/2.55" , 1.4 µm
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Primary camera resolution12000 x 9000 pixels9280 x 6920 pixels
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Primary camera video8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS4K@30fps, 1080p@30/60fps
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Primary camera flashLED flashLED flash
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Camera featuresAutofocus, continuous shooting, digital zoom, optical zoom, optical image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, phase detection autofocus, laser autofocusAutofocus, 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, macro-mode, phase detection autofocus
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DxOMark photo128-
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DxOMark zoom76-
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DxOMark video98-
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DxOMark camera score121-
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Selfie camera
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Selfie camera type-Single
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Selfie camera(wide) , 40 MP, f/2.2 , 80˚ , 26 mm, 1/2.8" , 0.7 µm(wide) , 16 MP, f/2.5 , 1.0 µm
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Selfie camera resolution7968 x 5480 pixels4608 x 3456 pixels
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Selfie camera featuresAutofocus, HDR, phase detection autofocusFace unlock, HDR
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Selfie camera video4K@30/60fps, 1080p@30fps1080p@30fps
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DxOMark photo105-
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DxOMark video93-
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DxOMark camera score100-
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Sound
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3.5mm jackNoYes
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LoudspeakerYes, with stereo speakersYes, 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, 802.11ac, 802.11ax, 6EWi-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 BandYesYes
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USBType-C 3.2Type-C 2.0
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USB On-The-GoYesYes
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Bluetoothv5.2v5.3
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Bluetooth A2DPYesYes
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bluetooth LEYesYes
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Infrared-Yes
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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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GALILEOYesYes
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BDSYesYes
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Features
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SensorsAccelerometer, barometer, compass, fingerprint, gyroscope, proximityAccelerometer, color spectrum, 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-IonLi-Po
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Battery capacity5000 mAh5080 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingYesYes, 67W (100% in 46 min)
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Wireless reverse chargingYes-
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Fast wireless chargingQi/PMA-
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DxOMark autonomy48-
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DxOMark charging74-
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DxOMark efficiency53-
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DxOMark battery score57-
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Tests and performance
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Antutu677991 (v8)824571 (v9)
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Geekbench(single-core)1096 (v5.2)994 (v5.2)
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Geekbench(multi-core)3723 (v5.2)3752 (v5.2)
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SAR value
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SAR(head)0.77 W/kg-
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SAR(body)1.02 W/kg-
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SAR EU(head)0.71 W/kg-
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SAR EU(body)1.58 W/kg-
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Cost
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Price1200 USD300 USD
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Multimedia
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Radio-No
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