Compare phones
| Global Score | |
| 71.8 | 83.2 |
| Basic Information | |
| Xiaomi | Xiaomi |
| Android 6.0 Marshmallow | -- |
| 2017-02-14 | 2019-03-06 |
| 5.94 x 2.99 x 0.33 inches | 6.20 x 2.94 x 0.30 inches |
| 5.82 ounces | 6.10 ounces |
| 16 777 216 | Black, Blue and Purple |
| Metal | Glass (Corning Gorilla Glass 5) and Metal |
| -- | Scratch-Resistant Glass |
| $ 145.00 | -- |
| Display / Screen | |
| 5.5 inches | 6.4 inches |
| 1920 x 1080 pixels (Full HD) | 2340 x 1080 pixels |
| IPS LCD | AMOLED |
| 401 pixels per inch | 403 pixels per inch |
| -- | 600 cd/m2 brightness |
| No touch screen | No touch screen |
| 8 | 8.6 |
| Performance | |
| Qualcomm Snapdragon 625 8953 chipset | Qualcomm Snapdragon 855 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 2000 MHz) processor | Kryo 485, 64-bit, 7 nm (Octa-Core 2840 MHz) processor |
| 3 GB RAM | 6 GB RAM |
| Adreno 506 GPU | Adreno 640 GPU |
| 9.09 | 9.63 |
| Storage | |
| 32 GB internal memory | 128 GB internal memory |
| microSDXC (up to 128 GB) external memory slot | No SD card slot |
| 8.12 | 10.1 |
| Camera | |
| 13.00 MP + 5.00 MP | 48.00 MP + 20.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| -- | 26.00mm focal length |
| -- | 0.5 inches (1/2") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (60 fps) (4K) video resolution |
| 1280 x 720 (120 fps) (HD) slow motion video | 1920 x 1080 (960 fps) (Full HD) slow motion video |
| 9.02 | 12.1 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G) and HSPA | LTE-A (4G), LTE (4G), HSPA and HSUPA |
| Micro SIM | Nano SIM, Dual SIM |
| 6.1 | 6.3 |
| Battery Life | |
| 4100mAh Li - Polymer Battery | 3300mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 6 | 5.28 |
| Other Features | |
| Bluetooth 4.2 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Infra-red port | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
Comparison review
The Xiaomi Mi 9 has an overall score of 83.2, which is much better than Xiaomi Redmi Note 4X's score of 71.8. Xiaomi Mi 9 is a extremely newer and a little thinner cellphone than Xiaomi Redmi Note 4X, but it's a little heavier. The Xiaomi Mi 9 has a little faster processor than Xiaomi Redmi Note 4X, and although they both have 8 CPU cores, the Xiaomi Mi 9 also has more RAM.
The Xiaomi Mi 9 has just a bit better display than Xiaomi Redmi Note 4X, because it has a little bit better number of pixels per inch in the screen, a bigger display and a little bit higher 1080 x 2340 pixels resolution. Xiaomi Mi 9 has a very superior memory to install games and applications than Xiaomi Redmi Note 4X, because although it has no SD memory card expansion slot, it also counts with 96 GB more internal memory capacity.
The Xiaomi Mi 9 features a way better camera than Xiaomi Redmi Note 4X, because it has a much higher 3840x2160 video quality, a much more mega pixels camera and a bigger diafragm aperture to take better images and video in low light situations. Xiaomi Redmi Note 4X has better battery lifetime than Xiaomi Mi 9, because it has a 4100mAh battery size against 3300mAh.
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