Compare phones
| Global Score | |
| 98.1 | 90.8 |
| Basic Information | |
| Samsung | Samsung |
| Android 11 | Android 11, 10 |
| 2021-01-29 | 2020-04-29 |
| 6.50 x 2.98 x 0.35 inches | 6.26 x 2.90 x 0.34 inches |
| 8.04 ounces | 6.60 ounces |
| Phantom black and Silver | Prism cube black |
| Aluminum and Glass (Corning Gorilla Glass Victus) | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 966.00 | $ 339.00 |
| Display / Screen | |
| 6.8 inches | 6.5 inches |
| 3200 x 1440 pixels | 2400 x 1080 pixels |
| Dynamic AMOLED | Super AMOLED |
| 516 pixels per inch | 405 pixels per inch |
| 1500 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 9.8 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Samsung Exynos 980 chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | ARM Cortex-A77 and ARM Cortex-A55, 64-bit, 8 nm (Octa-Core 2200 MHz) processor |
| 12 GB RAM | 6 GB RAM |
| Adreno 660 GPU | Mali-G76 MP5 GPU |
| 9.72 | 9.27 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| No SD card slot | microSDXC (up to 1000 GB) external memory slot |
| 10.1 | 15.38 |
| Camera | |
| 108.00 MP + 40.00 MP | 48.00 MP + 32.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| 24.00mm focal length | 26.00mm focal length |
| 0.75 inches (1/1.33") sensor | 0.5 inches (1/2") sensor |
| 7680 x 4320 (24 fps) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (960 fps) (HD) slow motion video | 1280 x 720 (480 fps) (HD) slow motion video |
| 13.75 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM |
| 10.7 | 10.7 |
| Battery Life | |
| 5000mAh Li - Polymer Battery | 4500mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 6.8 | 6.32 |
| Other Features | |
| Bluetooth 5.1 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Samsung Galaxy S21 Ultra is a little bit better than the Galaxy A51 5G, with a 98.1 score against 90.8. Even though the Samsung Galaxy S21 Ultra is newer than Galaxy A51 5G, it's heavier and a little thicker. Both of these phones use the same Android 11 OS (Operating System), so both of them should provide you identical operating system features.
The Galaxy S21 Ultra has a much more vibrant display than Galaxy A51 5G, because it has a quite larger display, a greater count of pixels per display inch and a better 1440 x 3200 resolution. The Samsung Galaxy A51 5G has a superior storage capacity to install games and applications than Samsung Galaxy S21 Ultra, and although they both have exactly the same internal memory capacity, the Samsung Galaxy A51 5G also has a slot for an SD memory card that holds up to 1000 GB.
The Galaxy S21 Ultra features just a little better processing power than Samsung Galaxy A51 5G, and although they both have a Octa-Core processing unit, the Galaxy S21 Ultra also has more RAM. Samsung Galaxy S21 Ultra counts with a better camera than Samsung Galaxy A51 5G, because it has a bigger aperture to capture better low-light photos and videos, a much larger camera sensor providing a much higher image quality, a much more MP camera in the back and a much higher 7680x4320 video resolution.
The Galaxy S21 Ultra counts with just a bit longer battery duration than Samsung Galaxy A51 5G, because it has 5000mAh of battery capacity against 4500mAh.
Although Samsung Galaxy S21 Ultra is a better device, it is way more expensive than Galaxy A51 5G, and it doesn't have such a good price and quality relation as the Galaxy A51 5G. If you prefer to save some money, you can buy Galaxy A51 5G, and give up some specs and features, but you'll get the most out of your savings.
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