Google Pixel 7a vs Samsung Galaxy S21 Ultra 5G
Google Pixel 7a
Samsung Galaxy S21 Ultra 5G
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 850, 900, 1800, 1900; CDMA 800, 1900 & TD-SCDMA
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3G networkHSDPA 800, 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1xEV-DOHSDPA 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1xEV-DO
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4G networkLTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 20, 25, 26, 28, 29, 30, 38, 40, 41, 48, 66, 71 - GWKK3, G0DZQ; 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 21, 25, 28, 32, 38, 39, 40, 41, 42, 66 - GHL1X, G82U8LTE 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 1, 2, 3, 5, 7, 8, 12, 14, 20, 25, 28, 30, 38, 41, 48, 66, 71, 77, 78 SA/NSA/Sub6 - GWKK3; 1, 2, 3, 5, 7, 8, 12, 14, 20, 25, 28, 30, 38, 41, 48, 66, 71, 77, 78, 260, 261 SA/NSA/Sub6/mmWave - G0DZQ; 1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 75, 76, 77, 78, 79 SA/NSA/Sub6 - GHL1X, G82U85G band 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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EV-DO speedEV-DO Rev.A 3.1 Mbps download, 1.8 Mbps upload-
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LTE speedLTE-A(CA)LTE-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 announced2023-052021-01
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Status2023-052021-01
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Design
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BuildGlass front (Gorilla Glass 3), aluminum frame, plastic backGlass front (Gorilla Glass Victus), glass back (Gorilla Glass), aluminum frame
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SIMNano-SIM and eSIMSingle SIM (Nano-SIM and/or eSIM) or Dual SIM (Nano-SIM and/or eSIM, dual stand-by)
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Height152 mm165.1 mm
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Width72.9 mm75.6 mm
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Thickness9 mm8.9 mm
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Weight193.5 g227 (Sub6) / 229 (mmWave) g
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Payment-Samsung Pay (Visa, MasterCard certified)
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WaterproofIP67 (1.5m for 30 mins)IP68 (1.5m and 30 mins)
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Dust proofIP67IP68
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ColorsCharcoal, Coral, Sea, SnowBlack, Brown, Silver, Navy, Titanium
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Display
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Display typeOLEDDynamic AMOLED 2X
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Physical size6.1 inches6.8 inches
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Resolution1080 x 2400 pixels1440 x 3200 pixels
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Pixel density429 ppi515 ppi
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Display colors1677721616777216
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ProtectionCorning Gorilla Glass 3Scratch resistant, Corning Gorilla Glass Victus
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Display featuresAlways-on display, HDR, 90Hz120Hz, HDR10+, 1500 nits (peak), Infinity-O display, Always-On display
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DxOMark display score-91
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Hardware
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CPUOcta-coreOcta-core
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CPUDual-core 2.85 GHz Cortex-X1Single-core 2.9 GHz Cortex-X1
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CPU(second)dual-core 2.35 GHz Cortex-A78Triple-core 2.80 GHz Cortex-A78
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CPU(third)Quad-core 1.8 GHz Cortex-A55Quad-core 2.2 GHz Cortex-A55
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ChipsetGoogle Tensor G2Exynos 2100
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GPUMali-G710 MP7Mali-G78 MP14
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Internal storage128 GB128, 256, 512 GB
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Memory RAM8 GB12, 16 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 13Android 11, One UI 3.1
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Main camera
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Camera typeDualQuad
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Main camera(wide) , 64 MP, f/1.9 , 80˚ , 26 mm, 1/1.73" , 0.8 µm, 8x digital zoom(wide) , 108 MP, f/1.8 , 26 mm, 1/1.33" , 0.8 µm
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(ultrawide) , 13 MP, f/2.2 , 120˚ , 1.12 µm(periscope telephoto) , 10 MP, f/4.9 , 1.22 µm, 1/3.24" , 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 resolution9280 x 2160 pixels12000 x 9000 pixels
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Primary camera video4K@30/60fps, 1080p@30/60/120/240fps, OIS8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS
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Primary camera flashdual-LED flashLED flash
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Camera featuresAutofocus, continuous shooting, digital zoom, optical 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, macro-mode, phase detection autofocus, laser autofocusAutofocus, 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 autofocus
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DxOMark photo-128
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DxOMark zoom-76
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DxOMark video-98
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DxOMark camera score-121
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Selfie camera
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Selfie camera typeSingle-
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Selfie camera(ultrawide) , 13 MP, f/2.2 , 95˚ , 20 mm, 1.12 µm(wide) , 40 MP, f/2.2 , 80˚ , 26 mm, 0.7 µm, 1/2.8"
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Selfie camera resolution4160 x 3120 pixels7968 x 5480 pixels
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Selfie camera featuresFace unlock, HDR, face detectionAutofocus, HDR, phase detection autofocus
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Selfie camera video4K@30fps, 1080p@30fps4K@30/60fps, 1080p@30fps
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DxOMark photo-105
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DxOMark video-93
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DxOMark camera score-100
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Sound
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3.5mm jackNoNo
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LoudspeakerYes, with stereo speakersYes, with stereo speakers
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EarpieceYesYes
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Multimedia
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RadioNo-
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Connectivity
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WLANWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz, 802.11ac, 802.11axWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz, 802.11ac, 802.11ax, 6E
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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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WiFi Tri-BandYes-
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USBType-C 3.2Type-C 3.2
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USB On-The-Go-Yes
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Bluetoothv5.3v5.2
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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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QZSSYes-
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NavICYes-
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Features
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SensorsAccelerometer, barometer, 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-Ion
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Battery capacity4385 mAh5000 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingUSB Power Delivery 3.0, 18WYes
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Wireless reverse charging-Yes
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Fast wireless chargingYes, 7.5WQi/PMA
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DxOMark autonomy-48
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DxOMark charging-74
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DxOMark efficiency-53
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DxOMark battery score-57
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Tests and performance
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Antutu768335 (v9)677991 (v8)
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Geekbench(single-core)1380 (v6)1096 (v5.2)
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Geekbench(multi-core)3071 (v6)3723 (v5.2)
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Cost
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Price450 USD1200 USD
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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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