| Global Score | |
| 85.7 | 87.7 |
| Basic Information | |
| Samsung | Samsung |
| Android 5.0 | Android 10 |
| 2015-04-10 | 2020-09-11 |
| 5.59 x 2.76 x 0.28 inches | 6.45 x 3.00 x 0.37 inches |
| 4.66 ounces | 7.51 ounces |
| Black, Gold, Green and White | Black and White |
| Aluminium and Glass | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 950.00 | -- |
| Display / Screen | |
| 5.1 inches | 6.7 inches |
| 1440 x 2560 pixels (Quad HD / 2K) | 2340 x 1080 pixels |
| Super AMOLED | Super AMOLED Plus |
| 576 pixels per inch | 385 pixels per inch |
| Capacitive, Multi-touch | No touch screen |
| 9.9 | 8 |
| Performance | |
| Exynos 7 Octa 7420 chipset | Qualcomm Snapdragon 730 SM7150-AA chipset |
| 64-bit ARM Cortex-A57 (Quad-Core 2100 MHz + Quad-Core 1500 MHz) processor | Kryo 470, 64-bit, 8 nm (Octa-Core 2200 MHz) processor |
| 3 GB (1600 MHz) RAM | 6 GB RAM |
| Mali-T760 MP8 (650 MHz) GPU | Adreno 618 GPU |
| 10.08 | 9.27 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 14.14 |
| Camera | |
| 16.00 MP + 5.00 MP | 64.00 MP + 32.00 MP |
| f/1.90 aperture | f/1.80 aperture |
| 28.00mm focal length | 26.00mm focal length |
| 0.38 inches (1/2.6") sensor | 0.57 inches (1/1.76") sensor |
| 3840 x 2160 (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 8.47 | 11.88 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA, HSUPA, UMTS, EDGE, GPRS and GSM | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 2600mAh Battery | 7000mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 4.56 | 8.32 |
| Other Features | |
| Bluetooth 4.1 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
The Galaxy M51 has a general score of 87.7, which is just a bit better than Galaxy S6 Edge's 85.7 general score. Both devices in this comparison use Android OS (operating system), but Galaxy M51 has a more recent 10 version while Galaxy S6 Edge has Android 5.0. Although the Galaxy M51 is much newer than Galaxy S6 Edge, it's heavier and notably thicker.
Samsung Galaxy S6 Edge features a lot better screen than Galaxy M51, because although it has a much smaller screen, it also counts with a higher 2560 x 1440px resolution and a greater display density. Galaxy M51 has a much bigger storage capacity to install games and applications than Samsung Galaxy S6 Edge, and although they both have equal 128 GB internal memory, the Galaxy M51 also has a slot for external memory cards that supports up to 512 GB.
Samsung Galaxy S6 Edge counts with a little faster processor than Samsung Galaxy M51, because although it has 3 GB less RAM, and they both have a Octa-Core CPU, the Samsung Galaxy S6 Edge also counts with an additional graphics processor and a 64 bits CPU. The Galaxy M51 has a very superior battery duration than Galaxy S6 Edge, because it has 7000mAh of battery capacity.
Galaxy M51 takes a lot better photographs and videos than Samsung Galaxy S6 Edge, and although they both have the same 3840x2160 (4K) video definition and the same video frame rates, the Galaxy M51 also has a camera with a lot better resolution, a much bigger camera sensor taking much higher quality videos and pictures and a bigger aperture for better low-light photography.
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