Compare phones
| Global Score | |
| 75.4 | 85.5 |
| Basic Information | |
| Blackberry | Samsung |
| -- | Android 11, 10 |
| 2018-07-06 | 2019-12-27 |
| 5.96 x 2.83 x 0.33 inches | 6.24 x 2.90 x 0.31 inches |
| 5.34 ounces | 6.07 ounces |
| Black, Gray and Red | Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white |
| Aluminum | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 282.00 |
| Display / Screen | |
| 4.5 inches | 6.5 inches |
| 1620 x 1080 pixels | 2400 x 1080 pixels |
| IPS LCD | Super AMOLED |
| 433 pixels per inch | 405 pixels per inch |
| No touch screen | No touch screen |
| 8.2 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 660 SDM660 chipset | Samsung Exynos 9611 chipset |
| Kryo 260, 64-bit, 14 nm (Octa-Core 2200 MHz) processor | ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 6 GB RAM | 4 GB RAM |
| Adreno 512 GPU | Mali-G72 MP3 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 | 48.00 MP + 32.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.36 inches (1/2.8") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1280 x 720 (240 fps) (HD) slow motion video |
| 9.57 | 11.55 |
| 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 | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.44 | 5.92 |
| 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
The Galaxy A51 has a score of 85.5, which is much better than the BlackBerry KEY2's 75.4 score. The Galaxy A51 design is newer and a little thinner than the BlackBerry KEY2's, although it is also somewhat heavier. The Samsung Galaxy A51's processor is very similar to BlackBerry KEY2's CPU, and although the Samsung Galaxy A51 has less RAM memory, they both have the same number of cores.
BlackBerry KEY2 features just a bit better looking display than Galaxy A51, because although it has a little bit worse resolution of 1080 x 1620 pixels and a lot smaller display, it also counts with a bit more pixels per inch of display. The Samsung Galaxy A51 shoots greater videos and photos than BlackBerry KEY2, because although it has a smaller camera aperture which is not recommended for low light images, and they both have the same video frame rate and the same 3840x2160 (4K) video quality, the Samsung Galaxy A51 also counts with a camera with lot more mega pixels and a lot larger back camera sensor taking way higher quality photographs and videos.
Galaxy A51 features a little bit better memory to install applications and games than BlackBerry KEY2, and although they both have exactly the same 128 GB internal memory capacity, the Galaxy A51 also has an external SD slot that admits up to 512 GB. The Galaxy A51 counts with a little better battery duration than BlackBerry KEY2, because it has a 14 percent more battery size.
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