Compare phones
| Global Score | |
| 90.8 | 76.6 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | Android 10 |
| 2020-04-29 | 2020-05-20 |
| 6.26 x 2.90 x 0.34 inches | 6.39 x 3.04 x 0.35 inches |
| 6.60 ounces | 7.02 ounces |
| Prism cube black | Forest green, Midnight gray and Polar white |
| Aluminum and Plastic | Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 339.00 | $ 283.00 |
| Display / Screen | |
| 6.5 inches | 6.5 inches |
| 2400 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED | IPS LCD |
| 405 pixels per inch | 396 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 8 |
| Performance | |
| Samsung Exynos 980 chipset | MediaTek Helio G85 chipset |
| ARM Cortex-A77 and ARM Cortex-A55, 64-bit, 8 nm (Octa-Core 2200 MHz) processor | Arm Cortex-A75 and ArmCortex-A55, 64-bit, 12 nm (Octa-Core 2000 MHz) processor |
| 6 GB RAM | 3 GB RAM |
| Mali-G76 MP5 GPU | Mali G52 MC2 GPU |
| 9.27 | 9.09 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| microSDXC (up to 1000 GB) external memory slot | microSDXC (up to 128 GB) external memory slot |
| 15.38 | 10.02 |
| Camera | |
| 48.00 MP + 32.00 MP | 48.00 MP + 13.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| 26.00mm focal length | -- |
| 0.5 inches (1/2") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1280 x 720 (480 fps) (HD) slow motion video | 1280 x 720 (120 fps) (HD) slow motion video |
| 11.55 | 11 |
| 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 | |
| 4500mAh Li - Polymer Battery | 5020mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.32 | 6.8 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | 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
The Galaxy A51 5G is much better than Xiaomi Redmi Note 9, getting a 90.8 score against 76.6. Although Galaxy A51 5G and the Xiaomi Redmi Note 9 were only released 1 months apart, Galaxy A51 5G is a little bit lighter and a little thinner. These devices have Android OS (Operating System), but the Galaxy A51 5G has a more recent 11 version while Xiaomi Redmi Note 9 has Android 10, giving a couple additional features.
Samsung Galaxy A51 5G counts with a bit better performance than Xiaomi Redmi Note 9, and although they both have the same number of cores, the Samsung Galaxy A51 5G also has more RAM. The Galaxy A51 5G counts with a little sharper screen than Xiaomi Redmi Note 9, and although they both have a same size display, the Galaxy A51 5G also has a just a little better pixel number in each display inch and a slightly better 1080 x 2400 pixels resolution.
The Galaxy A51 5G counts with just a bit better camera than Xiaomi Redmi Note 9, because although it has a smaller camera aperture, and they both have the same back-facing camera sensor size and a same resolution camera, the Galaxy A51 5G also counts with a way higher (4K) video resolution. The Samsung Galaxy A51 5G features a superior memory capacity to store more apps and games than Xiaomi Redmi Note 9, because it has 64 GB more internal memory capacity and an external memory card slot that allows up to 1000 GB.
The Xiaomi Redmi Note 9 has just a little better battery performance than Samsung Galaxy A51 5G, because it has a 12% more battery capacity.
The Samsung Galaxy A51 5G costs more than Xiaomi Redmi Note 9, but it's still a convenient choice, because you can get a lot more for that extra money.
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