| Global Score | |
| 82.9 | 98.1 |
| Basic Information | |
| Samsung | |
| Android 11, 10 | Android 11 |
| 2020-08-20 | 2021-01-29 |
| 5.67 x 2.73 x 0.32 inches | 6.50 x 2.98 x 0.35 inches |
| 5.04 ounces | 8.04 ounces |
| Just black | Phantom black and Silver |
| Plastic and Plastic | Aluminum and Glass (Corning Gorilla Glass Victus) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 349.00 | $ 966.00 |
| Display / Screen | |
| 5.8 inches | 6.8 inches |
| 2340 x 1080 pixels | 3200 x 1440 pixels |
| OLED | Dynamic AMOLED |
| 444 pixels per inch | 516 pixels per inch |
| -- | 1500 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.3 | 9.8 |
| Performance | |
| Qualcomm Snapdragon 730G SM7150-AA chipset | Qualcomm Snapdragon 888 chipset |
| Kryo 470, 64-bit, 8 nm (Octa-Core 2200 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 6 GB RAM | 12 GB RAM |
| Adreno 618 GPU | Adreno 660 GPU |
| 9.27 | 9.72 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| No SD card slot | No SD card slot |
| 10.1 | 10.1 |
| Camera | |
| 12.20 MP + 8.00 MP | 108.00 MP + 40.00 MP |
| f/1.70 aperture | f/1.80 aperture |
| 27.00mm focal length | 24.00mm focal length |
| 0.39 inches (1/2.55") sensor | 0.75 inches (1/1.33") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1280 x 720 (240 fps) (HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 9.79 | 13.75 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.7 | 10.7 |
| Battery Life | |
| 3140mAh Li - Polymer Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.12 | 6.8 |
| Other Features | |
| Bluetooth 5.1 | Bluetooth 5.1 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Samsung Galaxy S21 Ultra is better than the Google Pixel 4a, with a 98.1 score against 82.9. Samsung Galaxy S21 Ultra's design is a bit thicker and extremely heavier than Google Pixel 4a. Both of these devices come with the same Android 11 OS (operating system). Galaxy S21 Ultra features a brighter screen than Google Pixel 4a, because it has a higher 1440 x 3200px resolution, a quite greater pixel quantity per inch in the display and a larger display.
The Galaxy S21 Ultra has as much memory capacity to store more games and applications as the Google Pixel 4a one, both of them have equal internal storage capacity. The Samsung Galaxy S21 Ultra has just a bit better hardware performance than Google Pixel 4a, and although they both have a Octa-Core processing unit, the Samsung Galaxy S21 Ultra also has a larger amount of RAM memory.
Samsung Galaxy S21 Ultra counts with a lot better camera than Google Pixel 4a, because although it has a tinier aperture, it also counts with a way better video definition, a much bigger camera sensor taking way better quality videos and pictures and a back-facing camera with a lot better resolution.
The Galaxy S21 Ultra counts with a really longer battery life than Google Pixel 4a, because it has 5000mAh of battery capacity.
Although Galaxy S21 Ultra is a better device, it is way more expensive than Google Pixel 4a, and it doesn't have such a good quality/price relation as the Google Pixel 4a. If you are trying to save some money, you can buy Google Pixel 4a, letting go some specs and features, but you will get the most out of your money.
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