| Global Score | |
| 81.6 | 87.7 |
| Basic Information | |
| Samsung | Samsung |
| Android 5.0, 4.4 | Android 10 |
| 2014-09-03 | 2020-09-11 |
| 6.04 x 3.09 x 0.33 inches | 6.45 x 3.00 x 0.37 inches |
| 6.21 ounces | 7.51 ounces |
| Black, Gold, Pink and White | Black and White |
| -- | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 269.00 | -- |
| Display / Screen | |
| 5.7 inches | 6.7 inches |
| 1440 x 2560 pixels (Quad HD / 2K) | 2340 x 1080 pixels |
| Super AMOLED | Super AMOLED Plus |
| 515 pixels per inch | 385 pixels per inch |
| Capacitive, Multi-touch | No touch screen |
| 9.5 | 8 |
| Performance | |
| Qualcomm Snapdragon 805 APQ8084 chipset | Qualcomm Snapdragon 730 SM7150-AA chipset |
| Krait 450 (Quad-Core 2700 MHz) processor | Kryo 470, 64-bit, 8 nm (Octa-Core 2200 MHz) processor |
| 3 GB (825 MHz) RAM | 6 GB RAM |
| Adreno 420 (500 MHz) GPU | Adreno 618 GPU |
| 9.54 | 9.27 |
| Storage | |
| 32 GB internal memory | 128 GB internal memory |
| microSD, microSDHC, microSDXC (up to 128 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 8.12 | 14.14 |
| Camera | |
| 16.00 MP + 3.70 MP | 64.00 MP + 32.00 MP |
| f/2.20 aperture | f/1.80 aperture |
| 31.00mm focal length | 26.00mm focal length |
| 0.38 inches (1/2.6") sensor | 0.57 inches (1/1.76") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1920 x 1080 (60 fps) (Full HD) slow motion video | -- |
| 10.01 | 11.88 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA+ (4G), HSDPA, HSUPA, EDGE, GPRS and GSM | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Micro SIM | Nano SIM, Dual SIM |
| 7 | 6.7 |
| Battery Life | |
| 3220mAh Li-Ion Battery | 7000mAh Battery |
| Removable Battery | Non-Removable Battery |
| 20 hours talk time | -- |
| 5.2 | 8.32 |
| Other Features | |
| Bluetooth 4.1, EDR | 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 |
Samsung Galaxy M51 has a general score of 87.7, which is a little bit better than Galaxy Note 4's score of 81.6. The Samsung Galaxy M51 design is way newer than the Galaxy Note 4's, but it's somewhat thicker and somewhat heavier. Both phones in this review come with Android OS (operating system), but the Samsung Galaxy M51 has a newer 10 version and Galaxy Note 4 has Android 5.0.
Samsung Galaxy Note 4 counts with a bit faster processor than Galaxy M51, because although it has a lower amount of RAM and 4 lesser processing cores (although faster), it also counts with an extra graphics processor. Galaxy Note 4 counts with a much better screen than Galaxy M51, because although it has a quite smaller display, it also counts with a greater screen pixels density and a higher 2560 x 1440 resolution.
The Samsung Galaxy M51 captures better videos and photos than Galaxy Note 4, and although they both have the same video quality and the same video frame rates, the Samsung Galaxy M51 also has a bigger aperture for better low-light photos, a camera with a much better resolution and a lot bigger sensor capturing way better quality videos and photos.
The Samsung Galaxy M51 has a superior memory to install applications and games or saving photos and videos than Galaxy Note 4, because it has an external SD slot that allows a maximum of 512 GB and 128 GB internal memory. The Galaxy M51 features a superior battery lifetime than Galaxy Note 4, because it has a 117% larger battery capacity.
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