Compare phones
| Global Score | |
| 11.67 | 8.92 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11 | Android 8.1 Oreo |
| 2021-01-29 | 2018-07-19 |
| 6.50 x 2.98 x 0.35 inches | 6.94 x 3.44 x 0.31 inches |
| 8.04 ounces | 7.80 ounces |
| Phantom black and Silver | 16 777 216 |
| Aluminum and Glass (Corning Gorilla Glass Victus) | Aluminum |
| Scratch-Resistant Glass | -- |
| $ 966.00 | -- |
| Display / Screen | |
| 6.8 inches | 6.9 inches |
| 3200 x 1440 pixels | 2160 x 1080 pixels |
| Dynamic AMOLED | IPS LCD |
| 516 pixels per inch | 350 pixels per inch |
| 1500 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 9.8 | 7.7 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Qualcomm Snapdragon 636 SDM636 chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | Kryo 260, 64-bit, 14 nm (Octa-Core 1800 MHz) processor |
| 12 GB RAM | 4 GB RAM |
| Adreno 660 GPU | Adreno 509 GPU |
| 9.72 | 8.91 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 256 GB) external memory slot |
| 10.1 | 10.78 |
| Camera | |
| 108.00 MP + 40.00 MP | 12.00 MP + 8.00 MP |
| f/1.80 aperture | f/1.90 aperture |
| 24.00mm focal length | -- |
| 0.75 inches (1/1.33") sensor | 0.39 inches (1/2.55") 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 (120 fps) (HD) slow motion video |
| 13.75 | 9.68 |
| 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 and HSUPA |
| Nano SIM | Nano SIM |
| 10.7 | 6.3 |
| Battery Life | |
| 5000mAh Li - Polymer Battery | 5500mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 4.96 | 5.84 |
| 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
Samsung Galaxy S21 Ultra is way better than Xiaomi Mi Max 3, getting a 11.67 score against 8.92. Samsung Galaxy S21 Ultra is a notably newer device than Xiaomi Mi Max 3, but it is a little bit heavier and thicker. Both of these phones come with Android OS, but the Samsung Galaxy S21 Ultra has the older 11 version while Xiaomi Mi Max 3 has Android 8.1 Oreo.
Galaxy S21 Ultra has a bit more powerful processing unit than Xiaomi Mi Max 3, and although they both have 8 cpu cores, the Galaxy S21 Ultra also has a greater amount of RAM memory. Galaxy S21 Ultra has a lot better looking screen than Xiaomi Mi Max 3, because although it has a quite smaller screen, it also counts with a greater pixels number per display inch and a better 1440 x 3200px resolution.
The Galaxy S21 Ultra takes way better photos and videos than Xiaomi Mi Max 3, because it has a bigger aperture for better low light photos, a much bigger back-facing camera sensor capturing more light and vivid colors, a camera with a lot better resolution and a lot better video quality. Xiaomi Mi Max 3 counts with a slightly better memory capacity for applications and games than Galaxy S21 Ultra, because although it has just 64 GB internal memory capacity, it also counts with a SD memory card expansion slot that supports up to 256 GB.
The Xiaomi Mi Max 3 counts with longer battery duration than Galaxy S21 Ultra, because it has 5500mAh of battery capacity.