Compare phones
| Global Score | |
| 78 | 79.6 |
| Basic Information | |
| Xiaomi | Samsung |
| -- | Android 11, 10, 9.0 Pie |
| 2018-07-27 | 2019-04-10 |
| 6.25 x 2.97 x 0.29 inches | 5.69 x 2.72 x 0.31 inches |
| 5.93 ounces | 4.94 ounces |
| Black, Blue, Gold, Pink and Red | Black, Blue, Coral and White |
| Aluminum | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6 inches | 5.9 inches |
| 2160 x 1080 pixels | 2340 x 1080 pixels |
| IPS LCD | Super AMOLED |
| 402 pixels per inch | 437 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 8.2 |
| Performance | |
| Qualcomm Snapdragon 660 SDM660 chipset | Exynos 7904 chipset |
| Kryo 260, 64-bit, 14 nm (Octa-Core 2200 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 512 GPU | Mali-G71 MP2 GPU |
| 9.27 | 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 | |
| 12.00 MP + 20.00 MP | 16.00 MP + 25.00 MP |
| f/1.80 aperture | f/1.70 aperture |
| -- | 27.00mm focal length |
| 0.34 inches (1/2.9") sensor | 0.36 inches (1/2.8") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1280 x 720 (120 fps) (HD) slow motion video | -- |
| 9.79 | 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 | |
| 3010mAh Li - Polymer Battery | 3100mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 4.96 | 5.12 |
| Other Features | |
| Bluetooth 5.0 | 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 | FM Radio |
Comparison review
Samsung Galaxy A40 is slightly better than Xiaomi Mi A2, having a global score of 79.6 against 78. Although Samsung Galaxy A40 and the Xiaomi Mi A2 were released with only 9 months difference, the Samsung Galaxy A40 construction is a little thicker but also lighter. The Galaxy A40 has just a bit better display than Xiaomi Mi A2, because although it has a bit smaller display, it also counts with a just a bit higher pixel count per screen inch and a little bit higher resolution of 1080 x 2340 pixels.
Samsung Galaxy A40 features a bigger memory capacity to install games and applications than Xiaomi Mi A2, because although it has 0 less internal memory capacity, it also counts with a SD card slot that supports a maximum of 512 GB. Xiaomi Mi A2 features a little bit better performance than Galaxy A40, and although they both have 8 cores, the Xiaomi Mi A2 also has more RAM.
The Xiaomi Mi A2 shoots clearer photos and videos than Samsung Galaxy A40, because although it has a tinier diafragm aperture which is worse for shooting photos or videos in low light environments, a smaller back camera sensor shooting worse quality pictures and a back camera with a way lower 12 megapixels resolution, it also counts with a much better 3840x2160 (4K) video resolution.
Samsung Galaxy A40 has a bit better battery performance than Xiaomi Mi A2, because it has a 3100mAh battery capacity against 3010mAh.
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