Compare phones
| Global Score | |
| 89 | 79 |
| Basic Information | |
| Xiaomi | Xiaomi |
| Android 11 | Android 11, 10 |
| 2021-08-10 | 2020-04-07 |
| 6.40 x 2.97 x 0.31 inches | 6.53 x 3.02 x 0.35 inches |
| 7.94 ounces | 7.37 ounces |
| Ceramic Black, Ceramic White and Shadow Gray | Aurora blue, Glacier white and Interstellar grey |
| Aluminum and Ceramic | Glass (Corning Gorilla Glass 5) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 249.00 |
| Display / Screen | |
| 6.7 inches | 6.7 inches |
| 2400 x 1080 pixels | 2400 x 1080 pixels |
| AMOLED | IPS LCD |
| 393 pixels per inch | 393 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 8 |
| Performance | |
| Qualcomm Snapdragon 888+ SM8350-AC chipset | Qualcomm Snapdragon 720G SM7125 chipset |
| Kryo 680 Prime, 64-bit, 5 nm (Octa-Core 3000 MHz) processor | Kryo 465, 64-bit, 8 nm (Octa-Core 2300 MHz) processor |
| 8 GB RAM | 4 GB RAM |
| Adreno 660 GPU | Adreno 618 GPU |
| 9.72 | 9.27 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 11.74 |
| Camera | |
| 108.00 MP + 20.00 MP | 48.00 MP + 16.00 MP |
| f/1.90 aperture | f/1.80 aperture |
| 24.00mm focal length | -- |
| 0.75 inches (1/1.33") sensor | 0.5 inches (1/2") sensor |
| 7680 x 4320 (24 fps) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1920 x 1080 (480 fps) (Full HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 13.75 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 10.6 | 6.7 |
| Battery Life | |
| 4500mAh Li - Ion Battery | 5020mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 6.32 | 6.8 |
| Other Features | |
| Bluetooth 5.2 | 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 |
Comparison review
Xiaomi Mi Mix 4 is better than Xiaomi Redmi Note 9S, getting an 89 score against 79. Even though Xiaomi Mi Mix 4 is just a bit heavier than Xiaomi Redmi Note 9S, it's thinner and also newer. These devices include the same Android 11 OS (Operating System). The Xiaomi Mi Mix 4 counts with a little more vivid display than Xiaomi Redmi Note 9S. Both of them have the same screen density, a screen of the same size and exactly the same 1080 x 2400 resolution.
The Xiaomi Mi Mix 4 has just a little better hardware performance than Xiaomi Redmi Note 9S, and although they both have the same number of cores, the Xiaomi Mi Mix 4 also has 4 GB more RAM. The Xiaomi Redmi Note 9S counts with a bigger memory for applications, games, photos and videos than Xiaomi Mi Mix 4, because although it has just 64 GB internal storage, it also counts with a slot for SD memory cards that holds up to 512 GB.
The Xiaomi Mi Mix 4 captures much better pictures and videos than Xiaomi Redmi Note 9S, because although it has a smaller aperture which is not recommended for low-light photography and videos, it also counts with a lot bigger back-facing camera sensor taking way higher quality videos and photographs, a way more megapixels back camera and a lot higher video resolution.
Xiaomi Redmi Note 9S features a bit superior battery lifetime than Xiaomi Mi Mix 4, because it has a 12 percent greater battery capacity.
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