Compare phones
| Global Score | |
| 80.1 | 98.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 15 | Android 11 |
| -- | 2021-01-29 |
| -- | 6.50 x 2.98 x 0.35 inches |
| -- | 8.04 ounces |
| -- | Phantom black and Silver |
| -- | Aluminum and Glass (Corning Gorilla Glass Victus) |
| -- | Scratch-Resistant Glass |
| -- | $ 966.00 |
| Display / Screen | |
| 6.7 inches | 6.8 inches |
| -- | 3200 x 1440 pixels |
| AMOLED | Dynamic AMOLED |
| -- | 516 pixels per inch |
| 3000 cd/m2 brightness | 1500 cd/m2 brightness |
| No touch screen | No touch screen |
| 5 | 9.8 |
| Performance | |
| Qualcomm Snapdragon 8 Elite SM8750-AB (4 nm) chipset | Qualcomm Snapdragon 888 chipset |
| processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 16 GB RAM | 12 GB RAM |
| Adreno 830 GPU | Adreno 660 GPU |
| 6.3 | 9.72 |
| Storage | |
| 512 GB internal memory | 128 GB internal memory |
| No SD card slot | No SD card slot |
| 17.6 | 10.1 |
| Camera | |
| 200.00 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 (30 fps) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1920 x 1080 (1920 fps) (Full HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 12.87 | 13.75 |
| Networks | |
| -- | Wi-Fi |
| -- | 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 |
| 7.6 | 10.7 |
| Battery Life | |
| 6000mAh Si - Carbon Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | Wireless Charging |
| 7.52 | 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
Samsung Galaxy S21 Ultra has a score of 98.1, which is way better than the Xiaomi 15 Ultra (Rumored)'s global score of 80.1. Both of these phones have Android OS (operating system), but the Samsung Galaxy S21 Ultra has an older 11 version while Xiaomi 15 Ultra (Rumored) has Android 15 version. Galaxy S21 Ultra has a way better looking screen than Xiaomi 15 Ultra (Rumored), because although it has much worse brightness, it also counts with a quite larger screen.
Xiaomi 15 Ultra (Rumored) features a superior storage for apps and games than Galaxy S21 Ultra, because it has more internal memory. The Galaxy S21 Ultra counts with a really superior hardware performance than Xiaomi 15 Ultra (Rumored), although it has a smaller amount of RAM, they both have a Octa-Core CPU.
The Galaxy S21 Ultra counts with just a bit better camera than Xiaomi 15 Ultra (Rumored), although it has a much less mega-pixels back-facing camera and a worse 7680x4320 video quality. The Xiaomi 15 Ultra (Rumored) has longer battery life than Galaxy S21 Ultra, because it has 6000mAh of battery capacity against 5000mAh.
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