Compare phones
| Global Score | |
| 75.3 | 91.8 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 8.1 Oreo, 7.1 Nougat | Android 11 |
| 2017-09-12 | 2021-01-29 |
| 6.01 x 2.91 x 0.30 inches | 5.97 x 2.80 x 0.31 inches |
| 5.75 ounces | 6.03 ounces |
| Black and Blue | Gray, Phantom pink, Violet and White |
| Aluminum and Glass | Aluminum and Plastic |
| -- | Scratch-Resistant Glass |
| $ 444.00 | $ 722.00 |
| Display / Screen | |
| 5.5 inches | 6.2 inches |
| 1920 x 1080 pixels (Full HD) | 2400 x 1080 pixels |
| IPS LCD | Dynamic AMOLED |
| 401 pixels per inch | 424 pixels per inch |
| 550 cd/m2 brightness | 1300 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.5 | 9.2 |
| Performance | |
| Qualcomm Snapdragon 660 chipset | Qualcomm Snapdragon 888 chipset |
| Kryo 260, 64-bit, 14 nm (Octa-Core 2200 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 6 GB RAM | 8 GB RAM |
| Adreno 512 GPU | Adreno 660 GPU |
| 9.27 | 9.63 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| No SD card slot | No SD card slot |
| 10.1 | 10.1 |
| Camera | |
| 12.00 MP + 16.00 MP | 12.00 MP + 10.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 27.00mm focal length | 26.00mm focal length |
| -- | 0.57 inches (1/1.76") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1280 x 720 (120 fps) (HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 9.57 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| -- | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 3 | 10.7 |
| Battery Life | |
| 3500mAh Li - Ion Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.44 | 5.92 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
Galaxy S21 is way better than Xiaomi Mi Note 3, getting a 91.8 score against 75.3. Both devices we compare here use Android OS (Operating System), but the Galaxy S21 has the previous 11 version while Xiaomi Mi Note 3 has Android 8.1 Oreo version. The Galaxy S21 body is a lot newer than Xiaomi Mi Note 3's, but it is a little bit thicker and just a little heavier.
The Samsung Galaxy S21 has just a bit better looking display than Xiaomi Mi Note 3, because it has a little bit bigger screen, a just a bit higher screen pixels density, much more brightness and a quite better resolution of 1080 x 2400. Galaxy S21 has a little faster CPU than Xiaomi Mi Note 3, and although they both have the same number of cores, the Galaxy S21 also has a greater amount of RAM memory.
The Galaxy S21 shoots much better pictures and videos than Xiaomi Mi Note 3, and although they both have a same resolution back camera and a F1.8 diafragm aperture, the Galaxy S21 also has a way better video definition. Galaxy S21's storage capacity for games and applications is just as good as the Xiaomi Mi Note 3 one, both of them have exactly the same 128 GB internal memory.
Galaxy S21 features a bit longer battery life than Xiaomi Mi Note 3, because it has 4000mAh of battery capacity instead of 3500mAh.
The Samsung Galaxy S21 costs a lot more than Xiaomi Mi Note 3, but you can get a much better phone for that extra dollars.
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