Compare phones
| Global Score | |
| 85.5 | 79.6 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | Android 11, 10, 9.0 Pie |
| 2019-12-27 | 2019-04-10 |
| 6.24 x 2.90 x 0.31 inches | 5.69 x 2.72 x 0.31 inches |
| 6.07 ounces | 4.94 ounces |
| Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white | Black, Blue, Coral and White |
| Plastic and Plastic | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 282.00 | -- |
| Display / Screen | |
| 6.5 inches | 5.9 inches |
| 2400 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 405 pixels per inch | 437 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 8.2 |
| Performance | |
| Samsung Exynos 9611 chipset | Exynos 7904 chipset |
| ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1800 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Mali-G72 MP3 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 | |
| 48.00 MP + 32.00 MP | 16.00 MP + 25.00 MP |
| f/2.00 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 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1280 x 720 (240 fps) (HD) slow motion video | -- |
| 11.55 | 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 | |
| 4000mAh Li - Polymer Battery | 3100mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 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 A51 is a bit better than the Galaxy A40, getting a global score of 85.5 against 79.6. Galaxy A51 is a heavier cellphone than the Galaxy A40, but both of them have the same thickness. Both phones in this comparison review include the same Android 11 OS (Operating System), so both should count with the same OS features.
The Galaxy A40 has a bit more vivid screen than Samsung Galaxy A51, because although it has a little worse resolution of 1080 x 2340 pixels and a little smaller display, it also counts with a little more pixels per inch of screen. Galaxy A51 features just a bit better performance than Galaxy A40. Both of them have the same number of cores and 4 GB of RAM.
Samsung Galaxy A51 has a much better camera than Galaxy A40, because although it has a smaller diafragm aperture, it also counts with a way better (4K) video definition, a camera with a lot higher resolution and a lot larger sensor providing a much better image quality. Galaxy A51 features a superior storage capacity for games and applications than Samsung Galaxy A40, and although they both have an external memory card slot that allows a maximum of 512 GB, the Galaxy A51 also has more internal memory.
The Samsung Galaxy A51 counts with greater battery duration than Galaxy A40, because it has 4000mAh of battery capacity.
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