Compare phones
| Global Score | |
| 71.7 | 83.2 |
| Basic Information | |
| Xiaomi | Xiaomi |
| Android 6.0 Marshmallow | -- |
| 2016-11-07 | 2019-03-06 |
| 5.56 x 2.74 x 0.35 inches | 6.20 x 2.94 x 0.30 inches |
| 5.50 ounces | 6.10 ounces |
| 16 777 216 | Black, Blue and Purple |
| Metal | Glass (Corning Gorilla Glass 5) and Metal |
| -- | Scratch-Resistant Glass |
| $ 133.00 | -- |
| Display / Screen | |
| 5 inches | 6.4 inches |
| 1920 x 1080 pixels (Full HD) | 2340 x 1080 pixels |
| IPS LCD | AMOLED |
| 441 pixels per inch | 403 pixels per inch |
| -- | 600 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.2 | 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 |
| 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/2.20 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 |
| -- | 1920 x 1080 (960 fps) (Full HD) slow motion video |
| 8.8 | 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 - Ion 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 |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
Xiaomi Mi 9 has a global score of 83.2, which is much better than Xiaomi Redmi 4 Prime's 71.7 general score. Xiaomi Mi 9 is a incredibly newer and thinner device than Xiaomi Redmi 4 Prime, but it's also just a little bit heavier. The Xiaomi Mi 9 has a little more vivid display than Xiaomi Redmi 4 Prime, because although it has a quite lower pixels amount per inch of screen, it also counts with a slightly better resolution of 1080 x 2340px and a larger display.
The Xiaomi Mi 9 counts with a much greater memory capacity to install applications and games than Xiaomi Redmi 4 Prime, because although it has no slot for external memory cards, it also counts with 128 GB internal storage capacity. Xiaomi Mi 9 counts with just a bit better hardware performance than Xiaomi Redmi 4 Prime, and although they both have the same number of cores, the Xiaomi Mi 9 also has a larger amount of RAM memory.
The Xiaomi Redmi 4 Prime features better battery duration than Xiaomi Mi 9, because it has a 24% greater battery capacity. The Xiaomi Mi 9 takes a lot better videos and photos than Xiaomi Redmi 4 Prime, because it has a larger aperture to take better captures and video in low-light environments, a much better 3840x2160 (4K) video definition and a camera in the back with a lot better 48 mega-pixels resolution.
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