Compare phones
| Global Score | |
| 87.7 | 98.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 10 | Android 11 |
| 2020-09-11 | 2021-01-29 |
| 6.45 x 3.00 x 0.37 inches | 6.50 x 2.98 x 0.35 inches |
| 7.51 ounces | 8.04 ounces |
| Black and White | Phantom black and Silver |
| Plastic and Plastic | Aluminum and Glass (Corning Gorilla Glass Victus) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 966.00 |
| Display / Screen | |
| 6.7 inches | 6.8 inches |
| 2340 x 1080 pixels | 3200 x 1440 pixels |
| Super AMOLED Plus | Dynamic AMOLED |
| 385 pixels per inch | 516 pixels per inch |
| -- | 1500 cd/m2 brightness |
| No touch screen | No touch screen |
| 8 | 9.8 |
| Performance | |
| Qualcomm Snapdragon 730 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 |
| 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 |
| 0.57 inches (1/1.76") 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 (960 fps) (HD) slow motion video |
| 11.88 | 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 | |
| 7000mAh Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 8.32 | 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 Galaxy S21 Ultra has a score of 98.1, which is better than Galaxy M51's 87.7 score. Galaxy S21 Ultra's construction is just a bit heavier but just a little bit thinner than the Galaxy M51, and both of them were released with only a couple of months difference. These phones include Android OS, but Galaxy S21 Ultra has the newer 11 version while Galaxy M51 has Android 10, providing a couple nice extra features.
Samsung Galaxy S21 Ultra has a little better hardware performance than Galaxy M51, and although they both have a Octa-Core CPU, the Samsung Galaxy S21 Ultra also has 6 GB more RAM. The Galaxy S21 Ultra features a much sharper screen than Galaxy M51, because it has a bit larger display, a higher 1440 x 3200 pixels resolution and a greater screen pixel density.
Samsung Galaxy S21 Ultra captures better videos and photos than Galaxy M51, and although they both have a F1.8 diafragm aperture, the Samsung Galaxy S21 Ultra also has a way bigger sensor shooting lot higher quality pictures and videos, a camera in the back with lot more mega-pixels and a way better video quality.
Samsung Galaxy M51 counts with a superior storage capacity to store more games and applications than Samsung Galaxy S21 Ultra, and although they both have the same internal storage capacity, the Samsung Galaxy M51 also has an external memory card slot that allows up to 512 GB. The Samsung Galaxy M51 features a much longer battery duration than Galaxy S21 Ultra, because it has 7000mAh of battery capacity against 5000mAh.
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