Compare phones
| Global Score | |
| 74.1 | 83.2 |
| Basic Information | |
| Xiaomi | Xiaomi |
| Android 7.0 Nougat, 6.0 Marshmallow | -- |
| 2017-01-23 | 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 |
| Aluminum | Glass (Corning Gorilla Glass 5) and Metal |
| -- | Scratch-Resistant Glass |
| $ 190.00 | -- |
| 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 |
| 450 cd/m2 brightness | 600 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.4 | 8.6 |
| Performance | |
| Qualcomm Snapdragon 625 8953 chipset | Qualcomm Snapdragon 855 chipset |
| ARM Cortex-A53, 64-bit (Octa-Core 2000 MHz) processor | Kryo 485, 64-bit, 7 nm (Octa-Core 2840 MHz) processor |
| 4 GB RAM | 6 GB RAM |
| Adreno 506 GPU | Adreno 640 GPU |
| 9.09 | 9.63 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 128 GB) external memory slot | No SD card slot |
| 10.02 | 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 4.1 | 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
Xiaomi Mi 9 is much better than the Xiaomi Redmi Note 4, getting an 83.2 score against 74.1. Xiaomi Mi 9's construction is noticeably newer and just a bit thinner than the Xiaomi Redmi Note 4's, but it's also a little heavier. Xiaomi Mi 9 features a little more vivid screen than Xiaomi Redmi Note 4, because it has a just a bit better pixels quantity per inch of screen, a bigger display, a slightly better 1080 x 2340 resolution and more brightness.
Xiaomi Mi 9 features a bit better hardware performance than Xiaomi Redmi Note 4, and although they both have the same number of cores, the Xiaomi Mi 9 also has a greater amount of RAM memory. The Xiaomi Mi 9 counts with a very superior camera than Xiaomi Redmi Note 4, because it has a lot higher resolution camera, a much better 3840x2160 video quality and a larger camera aperture.
Xiaomi Mi 9 features a slightly better memory to install applications and games or saving photos and videos than Xiaomi Redmi Note 4, because although it has no slot for SD memory cards, it also counts with 128 GB internal memory capacity. Xiaomi Redmi Note 4 has superior battery life than Xiaomi Mi 9, because it has a 4100mAh battery size instead of 3300mAh.
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