Compare phones
| Global Score | |
| 71.9 | 84.1 |
| Basic Information | |
| Samsung | |
| Android 9.0 Pie | Android 11, 10 |
| 2019-10-14 | 2020-03-23 |
| 6.25 x 2.96 x 0.35 inches | 6.26 x 2.96 x 0.35 inches |
| 6.56 ounces | 6.63 ounces |
| Diamond black and Twilight blue | Midnight blue and Raven black |
| Glass (Corning Gorilla Glass 5) and Metal | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 549.00 | -- |
| Display / Screen | |
| 6.4 inches | 6.4 inches |
| 2340 x 1080 pixels | 2340 x 1080 pixels |
| AMOLED | Super AMOLED |
| 403 pixels per inch | 403 pixels per inch |
| 430 cd/m2 brightness | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.4 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 855+ SM8150-AC chipset | Exynos 9611 chipset |
| Kryo 485, 64-bit, 7 nm (Octa-Core 2960 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 8 GB RAM | 4 GB RAM |
| Adreno 640 GPU | Mali-G72 MP3 GPU |
| 9.72 | 9.27 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 11.74 |
| Camera | |
| 48.00 MP | 48.00 MP + 20.00 MP |
| f/1.70 aperture | f/2.00 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.5 inches (1/2") sensor | 0.5 inches (1/2") sensor |
| 7680 x 4320 (15 fps) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 3840 x 2160 (60 fps) (4K) slow motion video | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 11.22 | 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 |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 4000mAh Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 7.52 |
| Other Features | |
| Bluetooth 5.1 | Bluetooth 5.0 |
| GPS | GPS |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Comparison review
Galaxy M21 has an overall score of 84.1, which is better than nubia Z20's global score of 71.9. These devices work with Android OS, but the Galaxy M21 has the older 11 version and nubia Z20 has Android 9.0 Pie version. The Galaxy M21 is a a little bit heavier phone than the nubia Z20, but both have the same thickness.
Nubia Z20 has a little better hardware performance than Samsung Galaxy M21, and although they both have the same number of cores, the nubia Z20 also has more RAM memory. The Galaxy M21 and nubia Z20 have incredibly similar displays, and although the Galaxy M21 has less bright screen, they both have a greater pixel number in each display inch, exactly the same resolution of 1080 x 2340px and a screen with the same size.
Samsung Galaxy M21 counts with a better storage capacity for games and applications than nubia Z20, because although it has 0 less internal storage capacity, it also counts with a slot for external memory cards that supports up to 512 GB. The Samsung Galaxy M21 features a little bit better camera than nubia Z20, because although it has a smaller aperture which is worse for shooting pictures and videos in low light environments, and they both have the same resolution back-facing camera, the same (4K) video definition and a 0.5 inches sensor, the Samsung Galaxy M21 also counts with higher 30 fps video frame rate.
The Galaxy M21 has a much longer battery life than nubia Z20, because it has 6000mAh of battery capacity.
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