| Global Score | |
| 90.8 | 87.4 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | Android 5.0 |
| 2020-04-29 | 2015-04-11 |
| 6.26 x 2.90 x 0.34 inches | 5.65 x 2.78 x 0.27 inches |
| 6.60 ounces | 4.87 ounces |
| Prism cube black | Black, Blue, Gold and White |
| Aluminum and Plastic | Aluminium and Glass |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 339.00 | $ 252.00 |
| Display / Screen | |
| 6.5 inches | 5.1 inches |
| 2400 x 1080 pixels | 1440 x 2560 pixels (Quad HD / 2K) |
| Super AMOLED | Super AMOLED |
| 405 pixels per inch | 576 pixels per inch |
| No touch screen | Capacitive, Multi-touch |
| 8.1 | 9.9 |
| Performance | |
| Samsung Exynos 980 chipset | Exynos 7 Octa 7420 chipset |
| ARM Cortex-A77 and ARM Cortex-A55, 64-bit, 8 nm (Octa-Core 2200 MHz) processor | 64-bit ARM Cortex-A57 (Quad-Core 2100 MHz + Quad-Core 1500 MHz) processor |
| 6 GB RAM | 3 GB (1600 MHz) RAM |
| Mali-G76 MP5 GPU | Mali-T760 MP8 (650 MHz) GPU |
| 9.27 | 10.08 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| microSDXC (up to 1000 GB) external memory slot | No SD card slot |
| 15.38 | 10.1 |
| Camera | |
| 48.00 MP + 32.00 MP | 16.00 MP + 5.00 MP |
| f/2.00 aperture | f/1.90 aperture |
| 26.00mm focal length | 28.00mm focal length |
| 0.5 inches (1/2") sensor | 0.38 inches (1/2.6") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (480 fps) (HD) slow motion video | -- |
| 11.55 | 10.01 |
| 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, HSUPA, UMTS, EDGE, GPRS and GSM |
| Nano SIM | Nano SIM, Dual SIM |
| 10.7 | 6.7 |
| Battery Life | |
| 4500mAh Li - Polymer Battery | 2550mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 6.32 | 4.56 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 4.1 |
| GPS | GPS |
| NFC | NFC |
| -- | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
The Galaxy A51 5G has a general score of 90.8, which is a little bit better than Galaxy S6's overall score of 87.4. Both of these phones come with Android OS (Operating System), but the Galaxy A51 5G has 11 version and Galaxy S6 has Android 5.0 version. The Galaxy A51 5G construction is way newer than the Galaxy S6's, but it's noticeably heavier and thicker.
Samsung Galaxy S6 has an incredibly better looking display than Galaxy A51 5G, because although it has a lot smaller screen, it also counts with a better resolution of 2560 x 1440 pixels and a higher pixels amount in each screen inch. The Galaxy A51 5G features much more memory for applications and games than Samsung Galaxy S6, and although they both have equal internal storage capacity, the Galaxy A51 5G also has a SD card slot that allows a maximum of 1000 GB.
Galaxy S6 features a little faster processing unit than Samsung Galaxy A51 5G, because although it has 3 GB less RAM memory, and they both have a Octa-Core processor, the Galaxy S6 also counts with an additional graphics processing unit and a 64-bit processor. The Galaxy A51 5G captures much better photos and videos than Samsung Galaxy S6, because although it has a smaller aperture which is not recommended for taking photos and/or video in low-light environments, and they both have the same 3840x2160 video definition and the same video frame rate, the Galaxy A51 5G also counts with a much larger back-facing camera sensor providing a much higher image quality and a camera in the back with much more megapixels.
The Galaxy A51 5G features a very superior battery lifetime than Samsung Galaxy S6, because it has a 76% larger battery size.
Although Galaxy A51 5G is a better device, it costs more money than the Galaxy S6, and it doesn't have such a good quality/price relation as Galaxy S6. If you are trying to save some dollars, you can buy Galaxy S6, giving up a couple features and specs, but you will get the most with your money.
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