Compare phones
| Global Score | |
| 79.6 | 87.7 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10, 9.0 Pie | Android 10 |
| 2019-04-10 | 2020-09-11 |
| 5.69 x 2.72 x 0.31 inches | 6.45 x 3.00 x 0.37 inches |
| 4.94 ounces | 7.51 ounces |
| Black, Blue, Coral and White | Black and White |
| Plastic and Plastic | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 5.9 inches | 6.7 inches |
| 2340 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED | Super AMOLED Plus |
| 437 pixels per inch | 385 pixels per inch |
| No touch screen | No touch screen |
| 8.2 | 8 |
| Performance | |
| Exynos 7904 chipset | Qualcomm Snapdragon 730 SM7150-AA chipset |
| ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1800 MHz) processor | Kryo 470, 64-bit, 8 nm (Octa-Core 2200 MHz) processor |
| 4 GB RAM | 6 GB RAM |
| Mali-G71 MP2 GPU | Adreno 618 GPU |
| 8.91 | 9.27 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 11.74 | 14.14 |
| Camera | |
| 16.00 MP + 25.00 MP | 64.00 MP + 32.00 MP |
| f/1.70 aperture | f/1.80 aperture |
| 27.00mm focal length | 26.00mm focal length |
| 0.36 inches (1/2.8") sensor | 0.57 inches (1/1.76") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 9.46 | 11.88 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 3100mAh Li - Polymer Battery | 7000mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.12 | 8.32 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| 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
The Samsung Galaxy M51 is better than Samsung Galaxy A40, having a global score of 87.7 against 79.6. These phones have Android OS (operating system), but the Samsung Galaxy M51 has 10 version while Samsung Galaxy A40 has Android 11. Samsung Galaxy M51's body is newer than Samsung Galaxy A40's, but it's notably heavier and somewhat thicker.
The Galaxy M51 has a bit better CPU than Samsung Galaxy A40, and although they both have the same number of cores, the Galaxy M51 also has 2 GB more RAM memory. Samsung Galaxy A40 has a bit sharper display than Galaxy M51, because although it has a little bit smaller screen, and they both have an equal resolution of 1080 x 2340, the Samsung Galaxy A40 also counts with a little better display pixel density.
Galaxy M51 has a lot better camera than Samsung Galaxy A40, because although it has a smaller diafragm aperture which is not nice for low light images, it also counts with a much higher resolution back camera, a much higher (4K) video resolution and a way bigger sensor shooting way better quality videos and photographs.
The Galaxy M51 features a way bigger storage capacity to store more games and applications than Samsung Galaxy A40, and although they both have an external SD slot that holds up to 512 GB, the Galaxy M51 also has 64 GB more internal storage. Galaxy M51 has a way better battery performance than Samsung Galaxy A40, because it has 7000mAh of battery capacity.
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