Compare phones
| Global Score | |
| 84.3 | 98.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 14 | Android 11 |
| 2024-07-19 | 2021-01-29 |
| 6.28 x 5.64 x 0.18 inches | 6.50 x 2.98 x 0.35 inches |
| 7.97 ounces | 8.04 ounces |
| Black, Blue and White | Phantom black and Silver |
| Aluminum and Glass | Aluminum and Glass (Corning Gorilla Glass Victus) |
| -- | Scratch-Resistant Glass |
| -- | $ 966.00 |
| Display / Screen | |
| 8 inches | 6.8 inches |
| 2488 x 2224 pixels | 3200 x 1440 pixels |
| AMOLED | Dynamic AMOLED |
| 417 pixels per inch | 516 pixels per inch |
| 3000 cd/m2 brightness | 1500 cd/m2 brightness |
| No touch screen | No touch screen |
| 10 | 9.8 |
| Performance | |
| Qualcomm Snapdragon 8 Gen 3 SM8650-AB (4 nm) chipset | Qualcomm Snapdragon 888 chipset |
| processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 12 GB RAM | 12 GB RAM |
| Adreno 750 GPU | Adreno 660 GPU |
| 6.21 | 9.72 |
| Storage | |
| 256 GB internal memory | 128 GB internal memory |
| No SD card slot | No SD card slot |
| 13.3 | 10.1 |
| Camera | |
| 50.00 MP + 16.00 MP | 108.00 MP + 40.00 MP |
| f/1.70 aperture | f/1.80 aperture |
| 23.00mm focal length | 24.00mm focal length |
| 0.67 inches (1/1.49") sensor | 0.75 inches (1/1.33") sensor |
| 7680 x 4320 (24 fps) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1920 x 1080 (960 fps) (Full HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 12.54 | 13.75 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 10.6 | 10.7 |
| Battery Life | |
| 5100mAh Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | Wireless Charging |
| 6.88 | 6.8 |
| Other Features | |
| Bluetooth 5.4 | Bluetooth 5.1 |
| GPS | GPS |
| NFC | NFC |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Samsung Galaxy S21 Ultra is better than the Xiaomi Mi Mix Fold 4, with a 98.1 score against 84.3. Even being the best phone we are comparing, we must highlight that it's also a way older, just a little heavier and extremely thicker phone. Both phones in this comparison review include Android OS (Operating System), but Samsung Galaxy S21 Ultra has an older 11 version while Xiaomi Mi Mix Fold 4 has Android 14 version.
The Xiaomi Mi Mix Fold 4 features just a bit better looking display than Galaxy S21 Ultra, because although it has a just a little less pixels per screen inch, it also counts with a quite better resolution of 2224 x 2488px, a really brighter display and a larger screen. Galaxy S21 Ultra has a much better hardware performance than Xiaomi Mi Mix Fold 4. They have 8 cpu cores and the same RAM amount.
The Xiaomi Mi Mix Fold 4 counts with a much greater memory capacity for games and applications than Samsung Galaxy S21 Ultra, because it has 256 GB internal storage. The Galaxy S21 Ultra takes just a bit better pictures and videos than Xiaomi Mi Mix Fold 4, because although it has a tinier aperture which is not recommended for shooting pictures or videos in low-light environments, and they both have the same 24 frames per second video frame rates and the same 7680x4320 video definition, the Galaxy S21 Ultra also counts with a larger sensor capturing more light and vivid colors and a way more MP camera.
The Xiaomi Mi Mix Fold 4 has just a bit longer battery duration than Galaxy S21 Ultra, because it has a 5100mAh battery size against 5000mAh.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.