Compare phones
| Global Score | |
| 98.1 | 81.3 |
| Basic Information | |
| Samsung | Samsung |
| Android 11 | Android 10 |
| 2021-01-29 | 2020-04-27 |
| 6.50 x 2.98 x 0.35 inches | 6.27 x 2.88 x 0.34 inches |
| 8.04 ounces | 6.53 ounces |
| Phantom black and Silver | Prism Crush black, Prism Crush blue, Prism Crush red and Prism Crush white |
| Aluminum and Glass (Corning Gorilla Glass Victus) | Plastic |
| Scratch-Resistant Glass | -- |
| $ 966.00 | -- |
| Display / Screen | |
| 6.8 inches | 6.4 inches |
| 3200 x 1440 pixels | 2400 x 1080 pixels |
| Dynamic AMOLED | Super AMOLED |
| 516 pixels per inch | 411 pixels per inch |
| 1500 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 9.8 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | MediaTek Helio P65 MT6768 chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | Arm Cortex-A75 and Arm Cortex-A55, 64-bit, 12 nm (Octa-Core 2000 MHz) processor |
| 12 GB RAM | 4 GB RAM |
| Adreno 660 GPU | Mali-G52 MC2 GPU |
| 9.72 | 9.09 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 11.74 |
| Camera | |
| 108.00 MP + 40.00 MP | 48.00 MP + 20.00 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 | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1280 x 720 (960 fps) (HD) slow motion video | -- |
| 13.75 | 10.89 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 10.7 | 6.7 |
| Battery Life | |
| 5000mAh Li - Polymer Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 6.8 | 6.8 |
| 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 | -- |
Comparison review
Samsung Galaxy S21 Ultra has an overall score of 98.1, which is much better than Galaxy A31's 81.3 score. These phones have Android OS, but the Samsung Galaxy S21 Ultra has newer 11 version while Galaxy A31 has Android 10, so it provides you a lot of extra features and a performance increase. Samsung Galaxy S21 Ultra's body is newer, but somewhat heavier and just a bit thicker than the Galaxy A31.
The Galaxy S21 Ultra has a bit superior CPU than Samsung Galaxy A31, and although they both have 8 processing cores, the Galaxy S21 Ultra also has a higher amount of RAM memory. Galaxy S21 Ultra counts with a way better display than Samsung Galaxy A31, because it has a little bit larger screen, a higher resolution of 1440 x 3200px and a higher pixel amount in each display inch.
The Galaxy A31 counts with a better memory to install games and applications than Galaxy S21 Ultra, because although it has 0 less internal memory capacity, it also counts with a slot for an SD memory card that holds a maximum of 512 GB. The Galaxy A31's battery life is just as good as the Samsung Galaxy S21 Ultra one.
Galaxy S21 Ultra has a much better camera than Samsung Galaxy A31, because it has a way more mega-pixels back facing camera, a much larger back-facing camera sensor which gives a way better image and video quality, a bigger aperture and a much higher 7680x4320 video resolution.
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