Compare phones
| Global Score | |
| 81.3 | 85.5 |
| Basic Information | |
| Samsung | Samsung |
| Android 10 | Android 11, 10 |
| 2020-04-27 | 2019-12-27 |
| 6.27 x 2.88 x 0.34 inches | 6.24 x 2.90 x 0.31 inches |
| 6.53 ounces | 6.07 ounces |
| Prism Crush black, Prism Crush blue, Prism Crush red and Prism Crush white | Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white |
| Plastic | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| -- | $ 282.00 |
| Display / Screen | |
| 6.4 inches | 6.5 inches |
| 2400 x 1080 pixels | 2400 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 411 pixels per inch | 405 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 8.1 |
| Performance | |
| MediaTek Helio P65 MT6768 chipset | Samsung Exynos 9611 chipset |
| Arm Cortex-A75 and Arm Cortex-A55, 64-bit, 12 nm (Octa-Core 2000 MHz) processor | ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Mali-G52 MC2 GPU | Mali-G72 MP3 GPU |
| 9.09 | 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 | |
| 48.00 MP + 20.00 MP | 48.00 MP + 32.00 MP |
| f/2.00 aperture | f/2.00 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.5 inches (1/2") sensor | 0.5 inches (1/2") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1280 x 720 (240 fps) (HD) slow motion video |
| 10.89 | 11.55 |
| 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 | |
| 5000mAh Li - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.8 | 5.92 |
| 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 |
Comparison review
The Galaxy A51 has a general score of 85.5, which is a little bit better than Galaxy A31's 81.3 score. The Galaxy A51 construction is just a bit thinner and just a bit lighter than Galaxy A31, although they were only released 4 months apart. Both phones we are comparing come with Android OS (operating system), but Galaxy A51 has a newer 11 version and Galaxy A31 has Android 10 version.
The Galaxy A31 and the Galaxy A51 have very similar displays, because although the Galaxy A51 has a just a little worse pixels density, and they both have the same resolution of 1080 x 2400, it also counts with a little bit bigger screen. Samsung Galaxy A51 has a much greater storage capacity for games and applications than Galaxy A31, and although they both have a slot for an SD memory card that allows up to 512 GB, the Samsung Galaxy A51 also has 128 GB internal memory capacity.
Galaxy A51 features a bit more powerful processing unit than Samsung Galaxy A31. They have 8 processing cores and 4 GB of RAM memory. Galaxy A51 has a slightly better camera than Galaxy A31, and although they both have a same size sensor, a back camera with a 48 mega pixels and the same aperture, the Galaxy A51 also has a much higher (4K) video quality.
Samsung Galaxy A31 features superior battery lifetime than Galaxy A51, because it has 5000mAh of battery capacity.
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