Compare phones
| Global Score | |
| 98.1 | 86.5 |
| Basic Information | |
| Samsung | Samsung |
| Android 11 | Android 11, 10 |
| 2021-01-29 | 2020-03-05 |
| 6.50 x 2.98 x 0.35 inches | 6.27 x 2.96 x 0.35 inches |
| 8.04 ounces | 6.74 ounces |
| Phantom black and Silver | Black, Blue and Red |
| Aluminum and Glass (Corning Gorilla Glass Victus) | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 966.00 | -- |
| Display / Screen | |
| 6.8 inches | 6.4 inches |
| 3200 x 1440 pixels | 2340 x 1080 pixels |
| Dynamic AMOLED | Super AMOLED |
| 516 pixels per inch | 403 pixels per inch |
| 1500 cd/m2 brightness | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 9.8 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Exynos 9611 chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 12 GB RAM | 6 GB RAM |
| Adreno 660 GPU | Mali-G72 MP3 GPU |
| 9.72 | 9.36 |
| 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 | 64.00 MP + 32.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 24.00mm focal length | 26.00mm focal length |
| 0.75 inches (1/1.33") sensor | 0.59 inches (1/1.7") 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 | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 13.75 | 12.1 |
| 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 | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 6.8 | 7.52 |
| 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
Samsung Galaxy S21 Ultra has a score of 98.1, which is much better than Galaxy M31's 86.5 general score. Samsung Galaxy S21 Ultra's design has the same thickness than Galaxy M31, but it is somewhat heavier. These devices include the same Android 11 OS, so you shouldn't perceive any differences in that aspect.
Samsung Galaxy S21 Ultra counts with a much better screen than Samsung Galaxy M31, because it has a higher resolution of 1440 x 3200 pixels, a higher pixels count in each display inch, a quite bigger screen and a much brighter display. Samsung Galaxy S21 Ultra has a little better processing power than Samsung Galaxy M31, and although they both have a Octa-Core CPU, the Samsung Galaxy S21 Ultra also has a higher amount of RAM memory.
The Samsung Galaxy S21 Ultra captures much better photos and videos than Galaxy M31, and although they both have a same size diafragm aperture, the Samsung Galaxy S21 Ultra also has a back facing camera with a lot better resolution, a lot bigger camera sensor and a lot better video definition. The Samsung Galaxy M31 has a better memory to install applications and games or saving photos and videos than Galaxy S21 Ultra, because although it has only 64 GB internal storage capacity, it also counts with a SD extension slot that holds up to 512 GB.
Galaxy M31 features better battery lifetime than Galaxy S21 Ultra, because it has a 20 percent bigger battery size.
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