Compare phones
| Global Score | |
| 88 | 98.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | Android 11 |
| 2020-08-06 | 2021-01-29 |
| 6.27 x 2.93 x 0.37 inches | 6.50 x 2.98 x 0.35 inches |
| 7.16 ounces | 8.04 ounces |
| Mirage black and Mirage blue | Phantom black and Silver |
| -- | Aluminum and Glass (Corning Gorilla Glass Victus) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 966.00 |
| Display / Screen | |
| 6.5 inches | 6.8 inches |
| 2400 x 1080 pixels | 3200 x 1440 pixels |
| Super AMOLED | Dynamic AMOLED |
| 405 pixels per inch | 516 pixels per inch |
| -- | 1500 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.1 | 9.8 |
| Performance | |
| Samsung Exynos 9611 chipset | Qualcomm Snapdragon 888 chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 6 GB RAM | 12 GB RAM |
| Mali-G72 MP3 GPU | Adreno 660 GPU |
| 9.36 | 9.72 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 14.14 | 10.1 |
| Camera | |
| 64.00 MP + 32.00 MP | 108.00 MP + 40.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 26.00mm focal length | 24.00mm focal length |
| 0.59 inches (1/1.7") 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 (480 fps) (HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 12.1 | 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 | |
| 6000mAh Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 7.52 | 6.8 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.1 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Samsung Galaxy S21 Ultra has a score of 98.1, which is much better than the Galaxy M31s's general score of 88. Both phones in this review have the same Android 11 operating system, so they should give all the same operating system features. Samsung Galaxy S21 Ultra's body is heavier but just a little thinner than Galaxy M31s, and they were released only a couple of months apart.
Samsung Galaxy S21 Ultra features a bit more powerful CPU than Samsung Galaxy M31s, and although they both have a Octa-Core processor, the Samsung Galaxy S21 Ultra also has a greater amount of RAM. The Galaxy S21 Ultra has a much better looking screen than Samsung Galaxy M31s, because it has a greater pixels number per inch of screen, a little bit bigger display and a higher 1440 x 3200px resolution.
Galaxy M31s has a superior storage capacity to install applications and games or saving photos and videos than Galaxy S21 Ultra, and although they both have the same 128 GB internal memory capacity, the Galaxy M31s also has a SD extension slot that holds up to 512 GB. The Samsung Galaxy M31s counts with better battery performance than Galaxy S21 Ultra, because it has a 20% more battery size.
Galaxy S21 Ultra captures much clearer pictures and videos than Galaxy M31s, and although they both have a same size camera aperture, the Galaxy S21 Ultra also has a much bigger camera sensor capturing more light and vivid colors, a lot more mega-pixels back-facing camera and a lot higher 7680x4320 video resolution.
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