Compare phones
| Global Score | |
| 87.7 | 79.6 |
| Basic Information | |
| Samsung | Samsung |
| Android 10 | Android 11, 10, 9.0 Pie |
| 2020-09-11 | 2019-04-10 |
| 6.45 x 3.00 x 0.37 inches | 5.69 x 2.72 x 0.31 inches |
| 7.51 ounces | 4.94 ounces |
| Black and White | Black, Blue, Coral and White |
| Plastic and Plastic | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.7 inches | 5.9 inches |
| 2340 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED Plus | Super AMOLED |
| 385 pixels per inch | 437 pixels per inch |
| No touch screen | No touch screen |
| 8 | 8.2 |
| Performance | |
| Qualcomm Snapdragon 730 SM7150-AA chipset | Exynos 7904 chipset |
| Kryo 470, 64-bit, 8 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 618 GPU | Mali-G71 MP2 GPU |
| 9.27 | 8.91 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 14.14 | 11.74 |
| Camera | |
| 64.00 MP + 32.00 MP | 16.00 MP + 25.00 MP |
| f/1.80 aperture | f/1.70 aperture |
| 26.00mm focal length | 27.00mm focal length |
| 0.57 inches (1/1.76") 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 |
| 11.88 | 9.46 |
| 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 | |
| 7000mAh Battery | 3100mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 8.32 | 5.12 |
| 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 Galaxy M51 has a global score of 87.7, which is much better than Galaxy A40's overall score of 79.6. The Galaxy M51 construction is newer than Galaxy A40's, but it's heavier and somewhat thicker. These phones have Android OS, but Galaxy M51 has the previous 10 version while Galaxy A40 has Android 11.
The Galaxy A40 features a bit more vivid screen than Galaxy M51, because although it has a quite smaller screen, and they both have exactly the same resolution of 1080 x 2340px, the Galaxy A40 also counts with a little bit higher quantity of pixels in each display inch. The Galaxy M51 has a way bigger storage capacity to install 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 128 GB internal storage capacity.
The Samsung Galaxy M51 features just a little better hardware performance than Galaxy A40, and although they both have a Octa-Core processor, the Samsung Galaxy M51 also has 2 GB more RAM memory. The Samsung Galaxy M51 has a really longer battery lifetime than Samsung Galaxy A40, because it has a 126 percent larger battery capacity.
Galaxy M51 counts with a very superior camera than Samsung Galaxy A40, because although it has a smaller camera aperture which is worse for low light images, it also counts with a camera with way more MP, a lot higher 3840x2160 video definition and a much bigger camera sensor which gives a way better photo and video quality.
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