Compare phones
| Global Score | |
| 98.1 | 81.1 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11 | Android 10 |
| 2021-01-29 | 2020-05-05 |
| 6.50 x 2.98 x 0.35 inches | 6.53 x 3.02 x 0.35 inches |
| 8.04 ounces | 7.37 ounces |
| Phantom black and Silver | Glacier white, Interstellar gray and Tropical green |
| Aluminum and Glass (Corning Gorilla Glass Victus) | Glass (Corning Gorilla Glass 5) and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 966.00 | $ 291.00 |
| Display / Screen | |
| 6.8 inches | 6.7 inches |
| 3200 x 1440 pixels | 2400 x 1080 pixels |
| Dynamic AMOLED | IPS LCD |
| 516 pixels per inch | 393 pixels per inch |
| 1500 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 9.8 | 8 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Qualcomm Snapdragon 720G SM7125 chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | Kryo 465, 64-bit, 8 nm (Octa-Core 2300 MHz) processor |
| 12 GB RAM | 6 GB RAM |
| Adreno 660 GPU | Adreno 618 GPU |
| 9.72 | 9.36 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 11.74 |
| Camera | |
| 108.00 MP + 40.00 MP | 64.00 MP + 16.00 MP |
| f/1.80 aperture | f/1.90 aperture |
| 24.00mm focal length | 26.00mm focal length |
| 0.75 inches (1/1.33") sensor | 0.59 inches (1/1.7") 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 | 1280 x 720 (960 fps) (HD) slow motion video |
| 13.75 | 12.1 |
| 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 | 5020mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 6.8 | 6.8 |
| Other Features | |
| Bluetooth 5.1 | 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, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
The Samsung Galaxy S21 Ultra has an overall score of 98.1, which is a lot better than the Xiaomi Redmi Note 9 Pro's 81.1 overall score. Both of these phones include Android OS (Operating System), but the Samsung Galaxy S21 Ultra has a more recent 11 version and Xiaomi Redmi Note 9 Pro has Android 10. Samsung Galaxy S21 Ultra is a a bit heavier phone than Xiaomi Redmi Note 9 Pro, but both are 0.35inches thick.
The Samsung Galaxy S21 Ultra has a bit more powerful processor than Xiaomi Redmi Note 9 Pro, and although they both have a Octa-Core processing unit, the Samsung Galaxy S21 Ultra also has more RAM. The Samsung Galaxy S21 Ultra features a lot better looking display than Xiaomi Redmi Note 9 Pro, because it has a better pixel number in each inch of screen, a higher 1440 x 3200 pixels resolution and a bit bigger screen.
The Xiaomi Redmi Note 9 Pro has a greater storage to store more apps and games than Galaxy S21 Ultra, because although it has just 64 GB internal memory, it also counts with a SD memory slot that supports a maximum of 512 GB. Galaxy S21 Ultra takes better photographs and videos than Xiaomi Redmi Note 9 Pro, because it has a way higher video definition, a much larger camera sensor capturing more light and vivid colors, a bigger diafragm aperture for better photos and videos in low-light situations and a way better 108 mega pixels resolution back camera.
The Xiaomi Redmi Note 9 Pro counts with a battery lifetime that is very similar to the battery lifetime in Samsung Galaxy S21 Ultra, although the Xiaomi Redmi Note 9 Pro also has a 0% more battery capacity.
Although Samsung Galaxy S21 Ultra is a better device, it costs a lot more than the Xiaomi Redmi Note 9 Pro, and it doesn't have such a good price and quality relation as Xiaomi Redmi Note 9 Pro. If you want to save some dollars, you can buy Xiaomi Redmi Note 9 Pro, and give up a couple features, but you'll get the most with your savings.
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