| Global Score | |
| 80.6 | 90.7 |
| Basic Information | |
| Xiaomi | Xiaomi |
| Android 14 | Android 11 |
| 2024-10-29 | 2021-03-29 |
| 6.00 x 2.80 x 0.32 inches | 6.47 x 2.94 x 0.33 inches |
| 6.67 ounces | 8.25 ounces |
| -- | Ceramic Black and Ceramic White |
| Glass | Ceramic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 6.8 inches |
| 2670 x 1200 pixels | 3200 x 1440 pixels |
| OLED | AMOLED |
| 457 pixels per inch | 516 pixels per inch |
| 3200 cd/m2 brightness | 1700 cd/m2 brightness |
| No touch screen | No touch screen |
| 10.2 | 9.9 |
| Performance | |
| Snapdragon 8 Elite SM8750-AB (3 nm) chipset | Qualcomm Snapdragon 888 SM8350 chipset |
| processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 12 GB RAM | 8 GB RAM |
| Adreno 830 GPU | Adreno 660 GPU |
| 6.21 | 9.63 |
| Storage | |
| 256 GB internal memory | 256 GB internal memory |
| No SD card slot | No SD card slot |
| 13.3 | 13.3 |
| Camera | |
| 50.00 MP + 32.00 MP | 50.00 MP + 20.00 MP |
| f/1.60 aperture | f/1.90 aperture |
| 23.00mm focal length | 24.00mm focal length |
| -- | 0.5 inches (1/2") sensor |
| 7680 x 4320 (30 fps) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1920 x 1080 (960 fps) (Full HD) slow motion video | 1920 x 1080 (1920 fps) (Full HD) slow motion video |
| 12.1 | 12.43 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G | 5G, 5G, HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 7 | 8.2 |
| Battery Life | |
| 5400mAh Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | Wireless Charging |
| 7.12 | 6.8 |
| Other Features | |
| Bluetooth 5.4 | Bluetooth 5.2 |
| GPS | GPS |
| NFC | NFC |
| Infra-red port | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass and Gyroscope | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
Xiaomi Mi 11 Ultra has a score of 90.7, which is better than the Xiaomi 15's global score of 80.6. Although it's the best we are comparing here, we must tell that it's also noticeably older, a little bit thicker and heavier. Both phones we compare here have Android OS (operating system), but the Xiaomi Mi 11 Ultra has an older 11 version while Xiaomi 15 has Android 14 version.
Xiaomi 15 has a little more vivid screen than Xiaomi Mi 11 Ultra, because although it has a little bit lower screen density, a bit worse resolution of 1200 x 2670 pixels and a quite smaller screen, it also counts with a lot brighter display. The Xiaomi Mi 11 Ultra has as much storage for apps and games as the Xiaomi 15, they have exactly the same 256 GB internal memory capacity.
The Xiaomi Mi 11 Ultra counts with a really superior hardware performance than Xiaomi 15, although it has a smaller amount of RAM, they both have a Octa-Core CPU. The Xiaomi Mi 11 Ultra counts with just a bit better camera than Xiaomi 15, although it has slower 24 fps video frame rate and a tinier camera aperture, they both have the same 7680x4320 video quality and a same resolution back-facing camera.
The Xiaomi 15 has just a bit better battery life than Xiaomi Mi 11 Ultra, because it has 5400mAh of battery capacity against 5000mAh.
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