Compare phones
| Global Score | |
| 75.3 | 98.1 |
| 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 | 6.50 x 2.98 x 0.35 inches |
| 5.75 ounces | 8.04 ounces |
| Black and Blue | Phantom black and Silver |
| Aluminum and Glass | Aluminum and Glass (Corning Gorilla Glass Victus) |
| -- | Scratch-Resistant Glass |
| $ 444.00 | $ 966.00 |
| Display / Screen | |
| 5.5 inches | 6.8 inches |
| 1920 x 1080 pixels (Full HD) | 3200 x 1440 pixels |
| IPS LCD | Dynamic AMOLED |
| 401 pixels per inch | 516 pixels per inch |
| 550 cd/m2 brightness | 1500 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.5 | 9.8 |
| 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 | 12 GB RAM |
| Adreno 512 GPU | Adreno 660 GPU |
| 9.27 | 9.72 |
| 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 | 108.00 MP + 40.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 27.00mm focal length | 24.00mm focal length |
| -- | 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 (120 fps) (HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 9.57 | 13.75 |
| 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 | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.44 | 6.8 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.1 |
| 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 Ultra has a global score of 98.1, which is a lot better than Xiaomi Mi Note 3's overall score of 75.3. These devices work with Android OS (operating system), but the Galaxy S21 Ultra has the previous 11 version and Xiaomi Mi Note 3 has Android 8.1 Oreo version. The Galaxy S21 Ultra design is way newer, but incredibly heavier and somewhat thicker than Xiaomi Mi Note 3.
The Galaxy S21 Ultra features just a bit better performance than Xiaomi Mi Note 3, and although they both have 8 cores, the Galaxy S21 Ultra also has a larger amount of RAM memory. Galaxy S21 Ultra has a much better display than Xiaomi Mi Note 3, because it has a much better resolution of 1440 x 3200 pixels, much more brightness, a bigger screen and a higher pixels quantity per display inch.
Samsung Galaxy S21 Ultra shoots much better pictures and videos than Xiaomi Mi Note 3, and although they both have a F1.8 aperture, the Samsung Galaxy S21 Ultra also has a much better 7680x4320 video quality and a way better 108 MP resolution camera in the back. The Galaxy S21 Ultra and Xiaomi Mi Note 3 both count with very similar storage capacity to install games and applications, they have the same internal memory capacity.
Galaxy S21 Ultra features a much better battery performance than Xiaomi Mi Note 3, because it has a 43 percent more battery size.
Galaxy S21 Ultra is a lot more expensive than Xiaomi Mi Note 3, but you can get a much better phone for that extra dollars.
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