| Global Score | |
| 83.2 | 83.2 |
| Basic Information | |
| Xiaomi | Asus |
| -- | Android 12 |
| 2019-03-06 | 2022-09-19 |
| 6.20 x 2.94 x 0.30 inches | 6.81 x 3.03 x 0.41 inches |
| 6.10 ounces | 8.43 ounces |
| Black, Blue and Purple | Space Gray |
| Glass (Corning Gorilla Glass 5) and Metal | -- |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 6.8 inches |
| 2340 x 1080 pixels | 2448 x 1080 pixels |
| AMOLED | AMOLED |
| 403 pixels per inch | 393 pixels per inch |
| 600 cd/m2 brightness | 1200 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.6 | 8.9 |
| Performance | |
| Qualcomm Snapdragon 855 chipset | MediaTek Dimensity 9000+ (4 nm) chipset |
| Kryo 485, 64-bit, 7 nm (Octa-Core 2840 MHz) processor | processor |
| 6 GB RAM | 16 GB RAM |
| Adreno 640 GPU | Mali-G710 MC10 GPU |
| 9.63 | 6.3 |
| Storage | |
| 128 GB internal memory | 512 GB internal memory |
| No SD card slot | No SD card slot |
| 10.1 | 17.6 |
| Camera | |
| 48.00 MP + 20.00 MP | 50.00 MP + 12.00 MP |
| f/1.80 aperture | f/1.90 aperture |
| 26.00mm focal length | -- |
| 0.5 inches (1/2") sensor | 0.64 inches (1/1.56") sensor |
| 3840 x 2160 (60 fps) (4K) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1920 x 1080 (960 fps) (Full HD) slow motion video | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 12.1 | 12.43 |
| 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) and HSDPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.3 | 10.6 |
| Battery Life | |
| 3300mAh Battery | 6000mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 5.28 | 7.52 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.3 |
| GPS | GPS |
| NFC | NFC |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
Asus ROG Phone 6D Ultimate is a bit better than the Xiaomi Mi 9, with an 83.2 score against 83.2. Although Asus ROG Phone 6D Ultimate is a lot newer than the Xiaomi Mi 9, it's thicker and much heavier. The Xiaomi Mi 9 counts with a much more powerful processing unit than Asus ROG Phone 6D Ultimate, although it has less RAM, they both have the same number of cores.
Asus ROG Phone 6D Ultimate features just a bit better display than Xiaomi Mi 9, because although it has a little lower screen pixels density, it also counts with way more brightness, a little bigger screen and a slightly better 1080 x 2448px resolution. Asus ROG Phone 6D Ultimate features a slightly better camera than Xiaomi Mi 9, because although it has a tinier aperture, it also counts with a way higher video definition, a back-facing camera with more mega pixels and a way larger sensor.
The Asus ROG Phone 6D Ultimate counts with a very superior memory to store more games and applications than Xiaomi Mi 9, because it has 384 GB more internal memory capacity. The Asus ROG Phone 6D Ultimate has a really longer battery performance than Xiaomi Mi 9, because it has 6000mAh of battery capacity.
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