Compare phones
| Global Score | |
| 75.4 | 90.8 |
| Basic Information | |
| Blackberry | Samsung |
| -- | Android 11, 10 |
| 2018-07-06 | 2020-04-29 |
| 5.96 x 2.83 x 0.33 inches | 6.26 x 2.90 x 0.34 inches |
| 5.34 ounces | 6.60 ounces |
| Black, Gray and Red | Prism cube black |
| Aluminum | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 339.00 |
| 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 980 chipset |
| Kryo 260, 64-bit, 14 nm (Octa-Core 2200 MHz) processor | ARM Cortex-A77 and ARM Cortex-A55, 64-bit, 8 nm (Octa-Core 2200 MHz) processor |
| 6 GB RAM | 6 GB RAM |
| Adreno 512 GPU | Mali-G76 MP5 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 1000 GB) external memory slot |
| 13.18 | 15.38 |
| 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 (480 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 | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Dual SIM | Nano SIM |
| 6.7 | 10.7 |
| Battery Life | |
| 3500mAh Li - Ion Battery | 4500mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.44 | 6.32 |
| 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 A51 5G has a global score of 90.8, which is a lot better than BlackBerry KEY2's general score of 75.4. Galaxy A51 5G's design is newer, but somewhat heavier and a little bit thicker than the BlackBerry KEY2. The Samsung Galaxy A51 5G's processor is very similar to the CPU in BlackBerry KEY2, both have a 6 GB RAM memory and the same number of cores.
BlackBerry KEY2 counts with a bit sharper screen than Samsung Galaxy A51 5G, because although it has a bit lower 1080 x 1620 resolution and a much smaller screen, it also counts with a little bit more pixels per display inch. Galaxy A51 5G counts with a better storage capacity for applications and games than BlackBerry KEY2, and although they both have exactly the same internal storage capacity, the Galaxy A51 5G also has a SD memory slot that holds a maximum of 1000 GB.
Samsung Galaxy A51 5G has better battery lifetime than BlackBerry KEY2, because it has 4500mAh of battery capacity instead of 3500mAh. The Galaxy A51 5G takes much better photos and videos than BlackBerry KEY2, because although it has a smaller aperture which is not nice for low light photography and video, and they both have the same 30 fps video frame rate and the same 3840x2160 video definition, the Galaxy A51 5G also counts with a way larger sensor providing a much better image quality and a way more MP back-facing camera.
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