Compare phones
| Global Score | |
| 87.5 | 98.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 12 | Android 11 |
| 2022-06-23 | 2021-01-29 |
| 6.43 x 2.99 x 0.30 inches | 6.50 x 2.98 x 0.35 inches |
| 6.88 ounces | 8.04 ounces |
| Moonlight Silver, Nebula Green and Night Black | Phantom black and Silver |
| Glass (Corning Gorilla Glass 5) and 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 |
| AMOLED | Dynamic AMOLED |
| 393 pixels per inch | 516 pixels per inch |
| 1300 cd/m2 brightness | 1500 cd/m2 brightness |
| No touch screen | No touch screen |
| 9.1 | 9.8 |
| Performance | |
| Qualcomm Snapdragon 870 SM8250-AC (7 nm) chipset | Qualcomm Snapdragon 888 chipset |
| Kryo 585, 64-bit (Octa-Core 3200 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 6 GB RAM | 12 GB RAM |
| Adreno 650 GPU | Adreno 660 GPU |
| 9.81 | 9.72 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| No SD card slot | No SD card slot |
| 10.1 | 10.1 |
| Camera | |
| 64.00 MP + 20.00 MP | 108.00 MP + 40.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| -- | 24.00mm focal length |
| 0.5 inches (1/2") 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 (120 fps) (HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 11.88 | 13.75 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, 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 |
| 10.7 | 10.7 |
| Battery Life | |
| 4500mAh Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 6.32 | 6.8 |
| Other Features | |
| Bluetooth 5.2 | Bluetooth 5.1 |
| GPS | GPS |
| NFC | NFC |
| 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 |
Comparison review
Galaxy S21 Ultra has a general score of 98.1, which is much better than Xiaomi Poco F4's general score of 87.5. Although the Galaxy S21 Ultra is better than Xiaomi Poco F4, it must be noted that it's also an older, somewhat heavier and thicker device. These devices include Android OS, but Galaxy S21 Ultra has older 11 version while Xiaomi Poco F4 has Android 12.
Galaxy S21 Ultra features a bit more vivid screen than Xiaomi Poco F4, because it has a bit brighter display, a quite bigger screen, a higher resolution of 1440 x 3200 pixels and a greater display density. The Xiaomi Poco F4 features a bit more powerful processor than Samsung Galaxy S21 Ultra, although it has lesser RAM, they both have 8 cores.
Samsung Galaxy S21 Ultra's storage for applications, games, photos and videos is just as good as Xiaomi Poco F4's one, both have exactly the same internal storage capacity. The Galaxy S21 Ultra counts with a bit superior battery performance than Xiaomi Poco F4, because it has a 5000mAh battery capacity against 4500mAh.
Galaxy S21 Ultra features a superior camera than Xiaomi Poco F4, and although they both have a same size diafragm aperture, the Galaxy S21 Ultra also has a back camera with much more mega-pixels, a lot bigger sensor taking more light and vivid colors and a much better video quality.
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