Compare phones
| Global Score | |
| 81.6 | 98.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 10 | Android 11 |
| 2020-09-08 | 2021-01-29 |
| 6.51 x 3.02 x 0.37 inches | 6.50 x 2.98 x 0.35 inches |
| 7.58 ounces | 8.04 ounces |
| Cobalt blue and Shadow gray | Phantom black and Silver |
| Plastic | Aluminum and Glass (Corning Gorilla Glass Victus) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 966.00 |
| Display / Screen | |
| 6.7 inches | 6.8 inches |
| 2400 x 1080 pixels | 3200 x 1440 pixels |
| IPS LCD | Dynamic AMOLED |
| 393 pixels per inch | 516 pixels per inch |
| 450 cd/m2 brightness | 1500 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.4 | 9.8 |
| Performance | |
| Qualcomm Snapdragon 732G SM7150-AC chipset | Qualcomm Snapdragon 888 chipset |
| Kryo 470, 64-bit, 8 nm (Octa-Core 2300 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 6 GB RAM | 12 GB RAM |
| Adreno 618 GPU | Adreno 660 GPU |
| 9.36 | 9.72 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | No SD card slot |
| 10.78 | 10.1 |
| Camera | |
| 64.00 MP + 20.00 MP | 108.00 MP + 40.00 MP |
| f/1.90 aperture | f/1.80 aperture |
| -- | 24.00mm focal length |
| 0.59 inches (1/1.7") sensor | 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 (960 fps) (HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 12.1 | 13.75 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM |
| 6.7 | 10.7 |
| Battery Life | |
| 5160mAh Li - Polymer Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 6.88 | 6.8 |
| Other Features | |
| Bluetooth 5.1 | Bluetooth 5.1 |
| GPS | GPS |
| NFC | NFC |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Samsung Galaxy S21 Ultra is much better than the Xiaomi Poco X3 NFC, getting a 98.1 score against 81.6. Even though the Samsung Galaxy S21 Ultra and Xiaomi Poco X3 NFC were released with only a few months difference, the Samsung Galaxy S21 Ultra design is a bit thinner but also a bit heavier than Xiaomi Poco X3 NFC. Both of these phones have Android OS, but the Samsung Galaxy S21 Ultra has newer 11 version and Xiaomi Poco X3 NFC has Android 10 version.
The Galaxy S21 Ultra has a bit more powerful processor than Xiaomi Poco X3 NFC, and although they both have the same number of cores, the Galaxy S21 Ultra also has a larger amount of RAM memory. The Galaxy S21 Ultra features a sharper display than Xiaomi Poco X3 NFC, because it has a higher 1440 x 3200 resolution, a greater pixels amount per inch in the display, way more brightness and a little bigger display.
The Xiaomi Poco X3 NFC has just a bit more storage capacity for applications, games, photos and videos than Samsung Galaxy S21 Ultra, because although it has 0 less internal storage capacity, it also counts with a SD memory slot that allows a maximum of 256 GB. Xiaomi Poco X3 NFC features just a little bit longer battery lifetime than Galaxy S21 Ultra, because it has 5160mAh of battery capacity instead of 5000mAh.
The Galaxy S21 Ultra has a better camera than Xiaomi Poco X3 NFC, because it has a lot better 7680x4320 video definition, a larger aperture to take better photos in poorly lited situations, a much larger back-facing camera sensor taking much better quality pictures and a much higher 108 mega pixels resolution back camera.
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