Compare phones
| Global Score | |
| 74.7 | 85.5 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10, 9.0 Pie | Android 11, 10 |
| 2019-04-10 | 2019-12-27 |
| 6.24 x 2.94 x 0.31 inches | 6.24 x 2.90 x 0.31 inches |
| 5.96 ounces | 6.07 ounces |
| Black,Deep blue and Red | Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white |
| Plastic | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| $ 166.00 | $ 282.00 |
| Display / Screen | |
| 6.4 inches | 6.5 inches |
| 1560 x 720 pixels | 2400 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 268 pixels per inch | 405 pixels per inch |
| No touch screen | No touch screen |
| 7.2 | 8.1 |
| Performance | |
| Samsung Exynos 7884 chipset | Samsung Exynos 9611 chipset |
| ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1800 MHz) processor | ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 3 GB RAM | 4 GB RAM |
| Mali-G71 MP2 GPU | Mali-G72 MP3 GPU |
| 8.91 | 9.27 |
| Storage | |
| 32 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 9.84 | 14.14 |
| Camera | |
| 13.00 MP + 8.00 MP | 48.00 MP + 32.00 MP |
| f/1.90 aperture | f/2.00 aperture |
| 27.00mm focal length | 26.00mm focal length |
| 0.32 inches (1/3.1") 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 |
| 9.02 | 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 | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 4000mAh Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 5.92 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| -- | 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 global score of 85.5, which is much better than the Samsung Galaxy A20's 74.7 score. These phones include the same Android 11 OS (Operating System), so you shouldn't see any difference regarding that. The Galaxy A51 design has the same thickness than Samsung Galaxy A20, but it is just a little bit heavier.
The Samsung Galaxy A51 has just a little better processing power than Galaxy A20, and although they both have the same number of cores, the Samsung Galaxy A51 also has a larger amount of RAM. The Galaxy A51 features a sharper display than Galaxy A20, because it has a little bit larger display, a way better screen density and a way better resolution of 1080 x 2400px.
The Galaxy A51 features a lot better camera than Galaxy A20, because although it has a tinier camera aperture, it also counts with a lot better resolution camera, a way better (4K) video resolution and a lot larger back camera sensor taking much higher quality videos and pictures. Galaxy A51 features a much bigger memory capacity to install games and applications than Galaxy A20, and although they both have a slot for external memory cards that holds up to 512 GB, the Galaxy A51 also has 128 GB internal storage.
Samsung Galaxy A51 has a battery lifetime that's very similar to Galaxy A20's battery performance.
The Galaxy A51 costs a lot more than Galaxy A20, but you can get a better phone for that extra dollars.
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