Compare phones
| Global Score | |
| 75.4 | 84.1 |
| Basic Information | |
| Blackberry | Samsung |
| -- | Android 11, 10 |
| 2018-07-06 | 2020-03-23 |
| 5.96 x 2.83 x 0.33 inches | 6.26 x 2.96 x 0.35 inches |
| 5.34 ounces | 6.63 ounces |
| Black, Gray and Red | Midnight blue and Raven black |
| Aluminum | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 4.5 inches | 6.4 inches |
| 1620 x 1080 pixels | 2340 x 1080 pixels |
| IPS LCD | Super AMOLED |
| 433 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.2 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 660 SDM660 chipset | 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 | 64 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 13.18 | 11.74 |
| Camera | |
| 12.00 MP + 8.00 MP | 48.00 MP + 20.00 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 |
| -- | 1920 x 1080 (240 fps) (Full 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 | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.44 | 7.52 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Galaxy M21 is much better than the BlackBerry KEY2, getting an 84.1 score against 75.4. Galaxy M21 is a newer phone than BlackBerry KEY2, although it's a little thicker and somewhat heavier. The Galaxy M21 has a bit sharper display than BlackBerry KEY2, because although it has a bit worse pixel density, it also counts with a higher 1080 x 2340 resolution and a really bigger display.
BlackBerry KEY2 and Galaxy M21 have extremely similar processing units, and although the Galaxy M21 has less RAM memory, they both have 8 cores. BlackBerry KEY2 has a bigger storage for games and applications than Samsung Galaxy M21, because although it has a SD memory card expansion slot that admits a maximum of 256 GB against 512 GB, it also counts with 128 GB internal memory.
Samsung Galaxy M21 features a greater camera than BlackBerry KEY2, because although it has a tinier aperture which is not so good for shooting pictures and videos in low-light situations, and they both have the same video quality and the same video frame rates, the Samsung Galaxy M21 also counts with a way bigger sensor taking much higher quality videos and photographs and a lot more mega pixels camera.
Galaxy M21 features a much longer battery performance than BlackBerry KEY2, because it has a 71 percent larger battery size.
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