Compare phones
| Global Score | |
| 90.8 | 76.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | Android 10 |
| 2020-04-29 | 2020-06-29 |
| 6.26 x 2.90 x 0.34 inches | 6.61 x 3.02 x 0.32 inches |
| 6.60 ounces | 6.81 ounces |
| Prism cube black | Black |
| Aluminum and Plastic | Plastic and Plastic |
| Scratch-Resistant Glass | -- |
| $ 339.00 | $ 194.00 |
| Display / Screen | |
| 6.5 inches | 6.5 inches |
| 2400 x 1080 pixels | 1600 x 720 pixels |
| Super AMOLED | IPS LCD |
| 405 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 7.3 |
| Performance | |
| Samsung Exynos 980 chipset | Mediatek Helio P35 chipset |
| ARM Cortex-A77 and ARM Cortex-A55, 64-bit, 8 nm (Octa-Core 2200 MHz) processor | Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor |
| 6 GB RAM | 3 GB RAM |
| Mali-G76 MP5 GPU | PowerVR GE8320 GPU |
| 9.27 | 9.27 |
| Storage | |
| 128 GB internal memory | 32 GB internal memory |
| microSDXC (up to 1000 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 15.38 | 9.84 |
| Camera | |
| 48.00 MP + 32.00 MP | 16.00 MP + 13.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| 26.00mm focal length | -- |
| 0.5 inches (1/2") sensor | 0.33 inches (1/3.06") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1280 x 720 (480 fps) (HD) slow motion video | -- |
| 11.55 | 9.35 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM |
| 10.7 | 6.7 |
| Battery Life | |
| 4500mAh Li - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.32 | 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 | FM Radio |
Comparison review
The Galaxy A51 5G has a general score of 90.8, which is much better than the Samsung Galaxy A21's 76.1 general score. The Galaxy A51 5G design is just a little bit thicker but a little bit lighter than the Samsung Galaxy A21, and both were released only 2 months apart. These phones include Android OS (operating system), but the Galaxy A51 5G has 11 version and Samsung Galaxy A21 has Android 10 version, so it gives you lots of additional features.
Galaxy A21's processing unit is very similar to the Galaxy A51 5G one, and although the Galaxy A21 has less RAM, they both have a Octa-Core CPU. Galaxy A51 5G features a brighter display than Galaxy A21, and although they both have a same size display, the Galaxy A51 5G also has a greater pixel density and a way higher resolution of 1080 x 2400px.
The Galaxy A51 5G features a much bigger storage capacity for games and applications than Samsung Galaxy A21, because it has 96 GB more internal storage and a SD memory slot that allows up to 1000 GB. The Galaxy A51 5G counts with just a little better battery performance than Samsung Galaxy A21, because it has 4500mAh of battery capacity.
Galaxy A51 5G features a lot better camera than Galaxy A21, because although it has a tinier aperture which is worse for low light photos and videos, it also counts with a way larger back-facing camera sensor capturing much higher quality photographs, a way higher resolution back-facing camera and a lot higher video resolution.
The Samsung Galaxy A51 5G is a lot more expensive than the Galaxy A21, but it's still a convenient choice, as you can get a better phone for that extra money.
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