Compare phones
| Global Score | |
| 98.1 | 87.7 |
| Basic Information | |
| Samsung | Samsung |
| Android 11 | Android 10 |
| 2021-01-29 | 2020-09-11 |
| 6.50 x 2.98 x 0.35 inches | 6.45 x 3.00 x 0.37 inches |
| 8.04 ounces | 7.51 ounces |
| Phantom black and Silver | Black and White |
| Aluminum and Glass (Corning Gorilla Glass Victus) | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 966.00 | -- |
| Display / Screen | |
| 6.8 inches | 6.7 inches |
| 3200 x 1440 pixels | 2340 x 1080 pixels |
| Dynamic AMOLED | Super AMOLED Plus |
| 516 pixels per inch | 385 pixels per inch |
| 1500 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 9.8 | 8 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Qualcomm Snapdragon 730 SM7150-AA chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | Kryo 470, 64-bit, 8 nm (Octa-Core 2200 MHz) processor |
| 12 GB RAM | 6 GB RAM |
| Adreno 660 GPU | Adreno 618 GPU |
| 9.72 | 9.27 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 14.14 |
| 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 | 0.57 inches (1/1.76") 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 | -- |
| 13.75 | 11.88 |
| 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 | 7000mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 6.8 | 8.32 |
| 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 better than the Samsung Galaxy M51, getting a general score of 98.1 against 87.7. The Samsung Galaxy S21 Ultra construction is just a little bit thinner but a little heavier than Samsung Galaxy M51, and both of them were released with only a couple months difference. These devices include Android operating system, but the Samsung Galaxy S21 Ultra has newer 11 version while Samsung Galaxy M51 has Android 10, providing the user some nice extra features.
Samsung Galaxy S21 Ultra counts with a bit better performance than Galaxy M51, and although they both have the same number of cores, the Samsung Galaxy S21 Ultra also has more RAM. The Galaxy S21 Ultra features a lot better display than Galaxy M51, because it has a little bit bigger screen, a better resolution of 1440 x 3200px and a greater screen density.
Galaxy M51 counts with a way bigger storage for games and applications than Galaxy S21 Ultra, and although they both have exactly the same 128 GB internal memory capacity, the Galaxy M51 also has a SD memory card expansion slot that holds a maximum of 512 GB. Samsung Galaxy S21 Ultra captures much clearer photographs and videos than Galaxy M51, and although they both have the same diafragm aperture, the Samsung Galaxy S21 Ultra also has a way larger sensor, a back facing camera with a way better 108 mega-pixels resolution and a much higher 7680x4320 video quality.
The Galaxy M51 has a much longer battery life than Galaxy S21 Ultra, because it has a 7000mAh battery size instead of 5000mAh.
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