| Global Score | |
| 75.4 | 86.5 |
| Basic Information | |
| Samsung | Samsung |
| Android 4.4.4 | Android 11, 10 |
| 2015-01-11 | 2020-03-05 |
| 5.94 x 3.00 x 0.25 inches | 6.27 x 2.96 x 0.35 inches |
| 4.97 ounces | 6.74 ounces |
| Blue, Gold and White | Black, Blue and Red |
| Metal | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 360.00 | -- |
| Display / Screen | |
| 5.5 inches | 6.4 inches |
| 1080 x 1920 pixels (Full HD) | 2340 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 401 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| Capacitive, Multi-touch | No touch screen |
| 9 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 615 8939 chipset | Exynos 9611 chipset |
| 64-bit ARM Cortex-A53 (Quad-Core 1500 MHz + Quad-Core 1000 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 2 GB (800 MHz) RAM | 6 GB RAM |
| Adreno 405 (500 MHz) GPU | Mali-G72 MP3 GPU |
| 9.45 | 9.36 |
| Storage | |
| 16 GB internal memory | 64 GB internal memory |
| microSD, microSDHC, microSDXC (up to 64 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 6.16 | 11.74 |
| Camera | |
| 13.00 MP + 5.00 MP | 64.00 MP + 32.00 MP |
| -- | f/1.80 aperture |
| -- | 26.00mm focal length |
| -- | 0.59 inches (1/1.7") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 8.03 | 12.1 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA+ (4G), HSDPA, HSUPA, EDGE, GPRS and GSM | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 7 | 6.7 |
| Battery Life | |
| 2600mAh Li-Ion Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 17 hours talk time | -- |
| 4.56 | 7.52 |
| Other Features | |
| Bluetooth 4.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| -- | Fingerprint ID Scanner |
| Accelerometer, Compass, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Samsung Galaxy M31 has a general score of 86.5, which is much better than Galaxy A7's 75.4 overall score. These phones have Android OS (Operating System), but Samsung Galaxy M31 has the previous 11 version and Galaxy A7 has Android 4.4.4. The Samsung Galaxy M31 body is way newer than Galaxy A7's, but it is way heavier and incredibly thicker.
The Galaxy A7 counts with just a bit better performance than Galaxy M31, because although it has 4 GB less RAM memory, and they both have the same number of cores, the Galaxy A7 also counts with an extra graphics processor and a 64-bit processing unit. The Galaxy A7 has a little more vivid display than Samsung Galaxy M31, although it has a little bit less pixels per inch of display, a little bit worse resolution of 1920 x 1080 pixels and a quite smaller screen.
Galaxy M31 has a much better camera than Galaxy A7, because it has a much better 3840x2160 video resolution and a much better resolution camera. Galaxy M31 has a much bigger memory capacity to install games and applications than Galaxy A7, because it has an external memory slot that allows up to 512 GB and 48 GB more internal memory.
Samsung Galaxy M31 features a really longer battery duration than Samsung Galaxy A7, because it has 6000mAh of battery capacity.
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