Samsung Galaxy S21 Ultra 5G vs Sigma Mobile X-style Tab A83
Samsung Galaxy S21 Ultra 5G
Sigma Mobile X-style Tab A83
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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 900, 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, 71-
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5G network5G band SA/NSA/Sub6/mmWave-
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HSDPA speed42.2 Mbps-
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HSUPA speed5.76 Mbps-
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LTE speedLTE-A (CA), 2000 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 announced2021-012019-1
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Status2021-012019-1
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Design
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BuildGlass front (Gorilla Glass Victus), glass back (Gorilla Glass), aluminum framePlastic, metal
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SIMSingle SIM (Nano-SIM and/or eSIM) or Dual SIM (Nano-SIM and/or eSIM, dual stand-by)Micro-SIM
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Height165.1 mm123 mm
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Width75.6 mm207 mm
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Thickness8.9 mm9 mm
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Weight227 (Sub6) / 229 (mmWave) g360 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, Gray
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Display
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Display typeDynamic AMOLED 2XIPS capacitive touchscreen
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Physical size6.8 inches8 inches
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Resolution1440 x 3200 pixels1280 x 800 pixels
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Pixel density515 ppi189 ppi
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Display colors1677721616777216
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ProtectionScratch resistant, Corning Gorilla Glass Victus-
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Multitouch-Yes
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Display features120Hz, HDR10+, 1500 nits (peak), Infinity-O display, Always-On display-
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DxOMark display score91-
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Hardware
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CPUOcta-core-
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CPUSingle-core 2.9 GHz Cortex-X1Quad-core 1.3 GHz Cortex-A7
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CPU(second)Triple-core 2.80 GHz Cortex-A78
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CPU(third)Quad-core 2.2 GHz Cortex-A55
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ChipsetExynos 2100Mediatek MT8321
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GPUMali-G78 MP14Mali-400 MP2
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Internal storage128, 256, 512 GB16 GB
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Memory RAM12, 16 GB2 GB
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Memory cardNomicroSD, microSDHC, microSDXC
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Memory card max-32 GB
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StorageUFS 3.1-
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OS
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OSAndroid 11, One UI 3.1Android 8.1 Oreo
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Main camera
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Camera typeQuadSingle
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Main camera(wide) , 108 MP, f/1.8 , 26 mm, 1/1.33" , 0.8 µm5 MP
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(periscope telephoto) , 10 MP, f/4.9 , 1/3.24" , 1.22 µm, 10x optical zoom
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(telephoto) , 10 MP, f/2.4 , 70 mm, 1/3.24" , 1.22 µm, 3x optical zoom
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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 pixels2592 x 1944 pixels
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Primary camera video8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS720p@30fps
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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 autofocusContinuous shooting, digital zoom, geotagging, panorama, HDR, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode
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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(wide) , 40 MP, f/2.2 , 80˚ , 26 mm, 1/2.8" , 0.7 µm2 MP
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Selfie camera resolution7968 x 5480 pixels1600 x 1200 pixels
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Selfie camera featuresAutofocus, HDR, phase detection autofocus-
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Selfie camera video4K@30/60fps, 1080p@30fps480p@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
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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 802.11b, 802.11g, 802.11n
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WLAN WiFi HotspotYesYes
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WLAN WiFi DirectYesYes
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WLAN WiFi Dual BandYes-
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USBType-C 3.2microUSB 2.0
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USB On-The-GoYesYes
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Bluetoothv5.2v4.0
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Bluetooth A2DPYesYes
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bluetooth LEYesYes
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Bluetooth EDR-Yes
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NFCYes-
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GPSYes, with A-GPSYes, with A-GPS
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GLONASSYes-
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GALILEOYes-
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BDSYes-
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Features
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SensorsAccelerometer, barometer, compass, fingerprint, gyroscope, proximityAccelerometer, proximity, light
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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 mAh4000 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingYes-
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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)-
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Geekbench(single-core)1096 (v5.2)-
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Geekbench(multi-core)3723 (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 USD-
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Multimedia
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Radio-FM Radio
