Compare phones
| Global Score | |
| 83.2 | 79.6 |
| Basic Information | |
| Xiaomi | Samsung |
| -- | Android 11, 10, 9.0 Pie |
| 2019-03-06 | 2019-04-10 |
| 6.20 x 2.94 x 0.30 inches | 5.69 x 2.72 x 0.31 inches |
| 6.10 ounces | 4.94 ounces |
| Black, Blue and Purple | Black, Blue, Coral and White |
| Glass (Corning Gorilla Glass 5) and Metal | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 5.9 inches |
| 2340 x 1080 pixels | 2340 x 1080 pixels |
| AMOLED | Super AMOLED |
| 403 pixels per inch | 437 pixels per inch |
| 600 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.6 | 8.2 |
| Performance | |
| Qualcomm Snapdragon 855 chipset | Exynos 7904 chipset |
| Kryo 485, 64-bit, 7 nm (Octa-Core 2840 MHz) processor | ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1800 MHz) processor |
| 6 GB RAM | 4 GB RAM |
| Adreno 640 GPU | Mali-G71 MP2 GPU |
| 9.63 | 8.91 |
| 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 | |
| 48.00 MP + 20.00 MP | 16.00 MP + 25.00 MP |
| f/1.80 aperture | f/1.70 aperture |
| 26.00mm focal length | 27.00mm focal length |
| 0.5 inches (1/2") sensor | 0.36 inches (1/2.8") sensor |
| 3840 x 2160 (60 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1920 x 1080 (960 fps) (Full HD) slow motion video | -- |
| 12.1 | 9.46 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.3 | 6.7 |
| Battery Life | |
| 3300mAh Battery | 3100mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 5.28 | 5.12 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| 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 |
| -- | FM Radio |
Comparison review
Xiaomi Mi 9 has a general score of 83.2, which is a bit better than Galaxy A40's 79.6 overall score. Xiaomi Mi 9's design is somewhat heavier but just a little bit thinner than the Galaxy A40, and both of them were released with only a few months difference. Xiaomi Mi 9 counts with a bit better display than Samsung Galaxy A40, because although it has a bit worse number of pixels per inch of display, and they both have the same resolution of 1080 x 2340, the Xiaomi Mi 9 also counts with a little bit larger display.
The Xiaomi Mi 9 features just a little better performance than Samsung Galaxy A40, and although they both have the same number of cores, the Xiaomi Mi 9 also has more RAM. Xiaomi Mi 9 shoots a lot better pictures and videos than Galaxy A40, because although it has a smaller diafragm aperture, it also counts with a much better video resolution, a lot bigger camera sensor taking more light and vivid colors and a much better resolution back camera.
The Samsung Galaxy A40 has a greater memory for applications, games, photos and videos than Xiaomi Mi 9, because although it has 0 less internal memory, it also counts with a SD memory card expansion slot that allows up to 512 GB. Xiaomi Mi 9 counts with just a bit better battery life than Samsung Galaxy A40, because it has 3300mAh of battery capacity instead of 3100mAh.
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