Compare phones
| Global Score | |
| 75.4 | 87.7 |
| Basic Information | |
| Blackberry | Samsung |
| -- | Android 10 |
| 2018-07-06 | 2020-09-11 |
| 5.96 x 2.83 x 0.33 inches | 6.45 x 3.00 x 0.37 inches |
| 5.34 ounces | 7.51 ounces |
| Black, Gray and Red | Black and White |
| Aluminum | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 4.5 inches | 6.7 inches |
| 1620 x 1080 pixels | 2340 x 1080 pixels |
| IPS LCD | Super AMOLED Plus |
| 433 pixels per inch | 385 pixels per inch |
| No touch screen | No touch screen |
| 8.2 | 8 |
| Performance | |
| Qualcomm Snapdragon 660 SDM660 chipset | Qualcomm Snapdragon 730 SM7150-AA chipset |
| Kryo 260, 64-bit, 14 nm (Octa-Core 2200 MHz) processor | Kryo 470, 64-bit, 8 nm (Octa-Core 2200 MHz) processor |
| 6 GB RAM | 6 GB RAM |
| Adreno 512 GPU | Adreno 618 GPU |
| 9.27 | 9.27 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 13.18 | 14.14 |
| Camera | |
| 12.00 MP + 8.00 MP | 64.00 MP + 32.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.36 inches (1/2.8") sensor | 0.57 inches (1/1.76") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 9.57 | 11.88 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 3500mAh Li - Ion Battery | 7000mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.44 | 8.32 |
| 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
Galaxy M51 is better than BlackBerry KEY2, having a general score of 87.7 against 75.4. Galaxy M51 is a way newer cellphone than BlackBerry KEY2, but it's somewhat thicker and way heavier. Samsung Galaxy M51's CPU is very similar to the CPU in BlackBerry KEY2, they have a Octa-Core CPU and the same RAM memory amount.
BlackBerry KEY2 has a slightly better screen than Galaxy M51, because although it has a little bit worse 1080 x 1620px resolution and a really smaller display, it also counts with a little better pixel density. Galaxy M51 counts with a greater camera than BlackBerry KEY2, and although they both have the same video frame rate, a same size camera aperture and the same 3840x2160 video definition, the Galaxy M51 also has a lot larger back-facing camera sensor capturing more light and vivid colors and a way more megapixels back-facing camera.
The Galaxy M51 has a slightly bigger storage for games and applications than BlackBerry KEY2, and although they both have exactly the same internal memory, the Galaxy M51 also has a SD card slot that holds a maximum of 512 GB. The Samsung Galaxy M51 features a very superior battery life than BlackBerry KEY2, because it has a 7000mAh battery capacity.
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