| Global Score | |
| 71.6 | 98.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 13 | Android 11 |
| -- | 2021-01-29 |
| 6.02 x 2.81 x 0.31 inches | 6.50 x 2.98 x 0.35 inches |
| 6.67 ounces | 8.04 ounces |
| -- | Phantom black and Silver |
| Glass | Aluminum and Glass (Corning Gorilla Glass Victus) |
| -- | Scratch-Resistant Glass |
| -- | $ 966.00 |
| Display / Screen | |
| 6.4 inches | 6.8 inches |
| 2400 x 1080 pixels | 3200 x 1440 pixels |
| OLED | Dynamic AMOLED |
| 411 pixels per inch | 516 pixels per inch |
| -- | 1500 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.6 | 9.8 |
| Performance | |
| Qualcomm Snapdragon 8 Gen 2 SM8550 (4 nm) chipset | Qualcomm Snapdragon 888 chipset |
| processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 8 GB RAM | 12 GB RAM |
| Adreno 740 GPU | Adreno 660 GPU |
| 6.21 | 9.72 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| No SD card slot | No SD card slot |
| 10.1 | 10.1 |
| Camera | |
| 50.30 MP + 32.00 MP | 108.00 MP + 40.00 MP |
| -- | f/1.80 aperture |
| -- | 24.00mm focal length |
| -- | 0.75 inches (1/1.33") sensor |
| -- | 7680 x 4320 (24 fps) video resolution |
| -- | 1280 x 720 (960 fps) (HD) slow motion video |
| 8.58 | 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 | Nano SIM |
| 10.6 | 10.7 |
| Battery Life | |
| 4700mAh Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 6.56 | 6.8 |
| Other Features | |
| Bluetooth 5.3 | 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 |
Samsung Galaxy S21 Ultra is a lot better than the Xiaomi 13, getting a 98.1 score against 71.6. These devices use Android OS (Operating System), but Samsung Galaxy S21 Ultra has older 11 version and Xiaomi 13 has Android 13. Samsung Galaxy S21 Ultra's construction is heavier and thicker than the Xiaomi 13.
Galaxy S21 Ultra features a lot better performance than Xiaomi 13, and although they both have a Octa-Core processing unit, the Galaxy S21 Ultra also has more RAM memory. The Galaxy S21 Ultra counts with a way better looking screen than Xiaomi 13, because it has a higher resolution of 1440 x 3200, a bit larger screen and a greater amount of pixels per inch in the display.
The Xiaomi 13 and the Samsung Galaxy S21 Ultra both have quite similar memory capacity for games and applications, both of them have equal 128 GB internal memory capacity. Samsung Galaxy S21 Ultra has a bit superior battery lifetime than Xiaomi 13, because it has a 6 percent larger battery capacity.
The Galaxy S21 Ultra features a way better camera than Xiaomi 13, because it has a back camera with a way better 108 mega pixels resolution.
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