Compare phones
| Global Score | |
| 79 | 87.7 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 11, 10 | Android 10 |
| 2020-04-07 | 2020-09-11 |
| 6.53 x 3.02 x 0.35 inches | 6.45 x 3.00 x 0.37 inches |
| 7.37 ounces | 7.51 ounces |
| Aurora blue, Glacier white and Interstellar grey | Black and White |
| Glass (Corning Gorilla Glass 5) | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 249.00 | -- |
| Display / Screen | |
| 6.7 inches | 6.7 inches |
| 2400 x 1080 pixels | 2340 x 1080 pixels |
| IPS LCD | Super AMOLED Plus |
| 393 pixels per inch | 385 pixels per inch |
| No touch screen | No touch screen |
| 8 | 8 |
| Performance | |
| Qualcomm Snapdragon 720G SM7125 chipset | Qualcomm Snapdragon 730 SM7150-AA chipset |
| Kryo 465, 64-bit, 8 nm (Octa-Core 2300 MHz) processor | Kryo 470, 64-bit, 8 nm (Octa-Core 2200 MHz) processor |
| 4 GB RAM | 6 GB RAM |
| Adreno 618 GPU | Adreno 618 GPU |
| 9.27 | 9.27 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 11.74 | 14.14 |
| Camera | |
| 48.00 MP + 16.00 MP | 64.00 MP + 32.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| -- | 26.00mm focal length |
| 0.5 inches (1/2") sensor | 0.57 inches (1/1.76") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (960 fps) (HD) slow motion video | -- |
| 11.55 | 11.88 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 5020mAh Li - Polymer Battery | 7000mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.8 | 8.32 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
Samsung Galaxy M51 is much better than Xiaomi Redmi Note 9S, getting a overall score of 87.7 against 79. Both of these devices use Android OS (operating system), but Samsung Galaxy M51 has an older 10 version while Xiaomi Redmi Note 9S has Android 11 version. Although it's the best phone in our current comparison, it must be noted that it is also a just a bit thicker and just a bit heavier phone.
Galaxy M51's processor is just as good as the CPU in Xiaomi Redmi Note 9S, and although the Galaxy M51 has more RAM, they both have a Octa-Core CPU. Samsung Galaxy M51 and Xiaomi Redmi Note 9S have similar screens, and although the Samsung Galaxy M51 has a little worse screen density and a quite lower resolution of 1080 x 2340 pixels, they both have a screen of the same size.
The Samsung Galaxy M51 features a very superior storage to install applications and games than Xiaomi Redmi Note 9S, and although they both have an external SD slot that allows a maximum of 512 GB, the Samsung Galaxy M51 also has more internal memory capacity. Samsung Galaxy M51 takes slightly better pictures and videos than Xiaomi Redmi Note 9S, and although they both have a F1.8 aperture, the same 3840x2160 video quality and the same 30 fps video frame rate, the Samsung Galaxy M51 also has a bigger camera sensor providing a better image quality and a much more MP camera in the back.
Galaxy M51 features a very superior battery performance than Xiaomi Redmi Note 9S, because it has a 7000mAh battery capacity against 5020mAh.
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