Compare phones
| Global Score | |
| 90.8 | 77.7 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | Android 10 |
| 2020-04-29 | 2020-06-19 |
| 6.26 x 2.90 x 0.34 inches | 6.44 x 2.96 x 0.35 inches |
| 6.60 ounces | 6.77 ounces |
| Prism cube black | Black, Blue, Red and White |
| Aluminum and Plastic | -- |
| Scratch-Resistant Glass | -- |
| $ 339.00 | -- |
| Display / Screen | |
| 6.5 inches | 6.5 inches |
| 2400 x 1080 pixels | 1600 x 720 pixels |
| Super AMOLED | TFT |
| 405 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 7.2 |
| Performance | |
| Samsung Exynos 980 chipset | Samsung Exynos 850 chipset |
| ARM Cortex-A77 and ARM Cortex-A55, 64-bit, 8 nm (Octa-Core 2200 MHz) processor | Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor |
| 6 GB RAM | 3 GB RAM |
| Mali-G76 MP5 GPU | Mali-G76 GPU |
| 9.27 | 9.09 |
| 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 | 48.00 MP + 13.00 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 |
| 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 | 10.78 |
| 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, Dual SIM |
| 10.7 | 6.7 |
| Battery Life | |
| 4500mAh Li - Polymer Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.32 | 6.8 |
| 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, Gyroscope and Proximity Sensor |
| FM Radio | -- |
Comparison review
The Galaxy A51 5G has a global score of 90.8, which is much better than Samsung Galaxy A21s's 77.7 global score. The Galaxy A51 5G is a a little bit lighter and just a bit thinner device than Samsung Galaxy A21s, although they were only released 2 months apart. Both of these phones use Android OS (Operating System), but the Galaxy A51 5G has a newer 11 version while Samsung Galaxy A21s has Android 10 version, so it provides the user some extra features and performance enhancements.
Galaxy A51 5G features a little faster processor than Samsung Galaxy A21s, and although they both have a Octa-Core processor, the Galaxy A51 5G also has 3 GB more RAM memory. Galaxy A51 5G counts with a better looking screen than Galaxy A21s, and although they both have a screen of the same size, the Galaxy A51 5G also has more pixels per inch in the screen and a lot better 1080 x 2400 resolution.
Galaxy A51 5G captures a bit better photographs and videos than Galaxy A21s, and although they both have the same sensor size, a same resolution back camera and the same aperture, the Galaxy A51 5G also has a lot higher (4K) video definition. The Galaxy A51 5G features a much better storage capacity for applications, games, photos and videos than Galaxy A21s, because it has 128 GB internal memory and a SD memory card expansion slot that holds up to 1000 GB.
Samsung Galaxy A21s has just a little bit longer battery lifetime than Samsung Galaxy A51 5G, because it has an 11% more battery size.
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