Compare phones
| Global Score | |
| 98.1 | 83.4 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11 | Android 11 |
| 2021-01-29 | 2021-03-20 |
| 6.50 x 2.98 x 0.35 inches | 6.51 x 3.02 x 0.37 inches |
| 8.04 ounces | 7.58 ounces |
| Phantom black and Silver | Frost blue, Metal bronze and Phantom black |
| Aluminum and Glass (Corning Gorilla Glass Victus) | -- |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 966.00 | -- |
| 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 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Qualcomm Snapdragon 860 SM8150-AC chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | Kryo 485, 64-bit, 7 nm (Octa-Core 2960 MHz) processor |
| 12 GB RAM | 6 GB RAM |
| Adreno 660 GPU | Adreno 640 GPU |
| 9.72 | 9.63 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| No SD card slot | microSDXC (up to 1 TB) external memory slot |
| 10.1 | 15.42 |
| Camera | |
| 108.00 MP + 40.00 MP | 48.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 24.00mm focal length | -- |
| 0.75 inches (1/1.33") sensor | 0.5 inches (1/2") 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 | 1920 x 1080 (60 fps) (Full HD) slow motion video |
| 13.75 | 10.78 |
| 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 |
| 10.7 | 6.7 |
| Battery Life | |
| 5000mAh Li - Polymer Battery | 5160mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 6.8 | 6.88 |
| 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
Galaxy S21 Ultra is much better than Xiaomi Poco X3 Pro, having a 98.1 score against 83.4. These phones come with the same Android 11 operating system. The Galaxy S21 Ultra construction is a bit thinner but a little bit heavier than the Xiaomi Poco X3 Pro, and both were released only 2 months apart.
The Galaxy S21 Ultra counts with an incredibly better screen than Xiaomi Poco X3 Pro, because it has a better pixel density, a better 1440 x 3200 pixels resolution and a little bigger screen. Xiaomi Poco X3 Pro features a very superior storage for apps and games than Galaxy S21 Ultra, and although they both have exactly the same internal memory capacity, the Xiaomi Poco X3 Pro also has an external memory slot that admits a maximum of 1 TB.
Galaxy S21 Ultra features a bit faster CPU than Xiaomi Poco X3 Pro, and although they both have 8 cpu cores, the Galaxy S21 Ultra also has a higher amount of RAM. Samsung Galaxy S21 Ultra features a way better camera than Xiaomi Poco X3 Pro, and although they both have the same aperture, the Samsung Galaxy S21 Ultra also has a lot better video definition, a much bigger camera sensor which provides a way higher photo and video quality and a camera with way more mega-pixels.
The Xiaomi Poco X3 Pro counts with a little longer battery performance than Samsung Galaxy S21 Ultra, because it has 5160mAh of battery capacity.
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