Compare phones
| Global Score | |
| 74.9 | 98.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 8.1 Oreo | Android 11 |
| 2018-07-19 | 2021-01-29 |
| 6.94 x 3.44 x 0.31 inches | 6.50 x 2.98 x 0.35 inches |
| 7.80 ounces | 8.04 ounces |
| 16 777 216 | Phantom black and Silver |
| Aluminum | Aluminum and Glass (Corning Gorilla Glass Victus) |
| -- | Scratch-Resistant Glass |
| -- | $ 966.00 |
| Display / Screen | |
| 6.9 inches | 6.8 inches |
| 2160 x 1080 pixels | 3200 x 1440 pixels |
| IPS LCD | Dynamic AMOLED |
| 350 pixels per inch | 516 pixels per inch |
| -- | 1500 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.7 | 9.8 |
| Performance | |
| Qualcomm Snapdragon 636 SDM636 chipset | Qualcomm Snapdragon 888 chipset |
| Kryo 260, 64-bit, 14 nm (Octa-Core 1800 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 4 GB RAM | 12 GB RAM |
| Adreno 509 GPU | Adreno 660 GPU |
| 8.91 | 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 | |
| 12.00 MP + 8.00 MP | 108.00 MP + 40.00 MP |
| f/1.90 aperture | f/1.80 aperture |
| -- | 24.00mm focal length |
| 0.39 inches (1/2.55") 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 |
| 9.68 | 13.75 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM |
| 6.3 | 10.7 |
| Battery Life | |
| 5500mAh Li - Polymer Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 7.2 | 6.8 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.1 |
| GPS | GPS |
| -- | 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 Mi Max 3, having a score of 98.1 against 74.9. Samsung Galaxy S21 Ultra's construction is notably newer, but somewhat thicker and a little bit heavier than the Xiaomi Mi Max 3. Both devices we are comparing have Android operating system, but the Samsung Galaxy S21 Ultra has the older 11 version and Xiaomi Mi Max 3 has Android 8.1 Oreo version.
The Galaxy S21 Ultra counts with a little faster CPU than Xiaomi Mi Max 3, and although they both have 8 processing cores, the Galaxy S21 Ultra also has a larger amount of RAM memory. The Samsung Galaxy S21 Ultra features an incredibly better looking display than Xiaomi Mi Max 3, because although it has a bit smaller display, it also counts with a higher resolution of 1440 x 3200 pixels and a greater pixels quantity per inch in the screen.
The Xiaomi Mi Max 3 features a bit more memory for apps and games than Samsung Galaxy S21 Ultra, because although it has just 64 GB internal storage, it also counts with a slot for external memory cards that holds a maximum of 256 GB. Galaxy S21 Ultra takes much better photos and videos than Xiaomi Mi Max 3, because it has a way bigger back-facing camera sensor capturing more light and vivid colors, a much higher 108 mega pixels resolution camera in the back, a larger aperture for better low light captures and video and a way better video definition.
Xiaomi Mi Max 3 features just a bit better battery lifetime than Samsung Galaxy S21 Ultra, because it has 5500mAh of battery capacity against 5000mAh.
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