Compare phones
| Global Score | |
| 98.1 | 79.3 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11 | Android 11, 10 |
| 2021-01-29 | 2020-02-11 |
| 6.50 x 2.98 x 0.35 inches | 6.51 x 3.02 x 0.35 inches |
| 8.04 ounces | 7.34 ounces |
| Phantom black and Silver | Atlantis blue, Matrix purple and Phoenix red |
| Aluminum and Glass (Corning Gorilla Glass Victus) | Glass (Corning Gorilla Glass 5) and Plastic |
| 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 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Qualcomm Snapdragon 730G SM7150-AB chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | Kryo 470, 64-bit, 8 nm (Octa-Core 2200 MHz) processor |
| 12 GB RAM | 6 GB RAM |
| Adreno 660 GPU | Adreno 618 GPU |
| 9.72 | 9.27 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| No SD card slot | No SD card slot |
| 10.1 | 7.7 |
| Camera | |
| 108.00 MP + 40.00 MP | 64.00 MP + 20.00 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 |
| 10.7 | 6.7 |
| Battery Life | |
| 5000mAh Li - Polymer Battery | 4500mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 6.8 | 6.32 |
| Other Features | |
| Bluetooth 5.1 | Bluetooth 5.0 |
| GPS | GPS |
| 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 | FM Radio |
Comparison review
The Galaxy S21 Ultra is way better than the Xiaomi Poco X2, getting a 98.1 score against 79.3. Both of these devices have the same Android 11 OS, so both of them should give all the same OS features. The Galaxy S21 Ultra is a a bit heavier device than Xiaomi Poco X2, but both are 0.35inches thick. The Samsung Galaxy S21 Ultra has a little better performance than Xiaomi Poco X2, and although they both have the same number of cores, the Samsung Galaxy S21 Ultra also has more RAM.
The Samsung Galaxy S21 Ultra counts with a much sharper screen than Xiaomi Poco X2, because it has a higher count of pixels per screen inch, a quite larger display and a better 1440 x 3200 pixels resolution. The Samsung Galaxy S21 Ultra has a superior camera than Xiaomi Poco X2, because it has a lot higher resolution back-facing camera, a bigger camera aperture, a way higher 7680x4320 video resolution and a much bigger camera sensor providing a way better image quality.
Samsung Galaxy S21 Ultra counts with a superior storage capacity to store more games and applications than Xiaomi Poco X2, because it has 128 GB internal storage. Samsung Galaxy S21 Ultra features just a bit better battery lifetime than Xiaomi Poco X2, because it has 5000mAh of battery capacity against 4500mAh.
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