Compare phones
| Global Score | |
| 71.9 | 85.5 |
| Basic Information | |
| Samsung | |
| Android 9.0 Pie | Android 11, 10 |
| 2019-10-14 | 2019-12-27 |
| 6.25 x 2.96 x 0.35 inches | 6.24 x 2.90 x 0.31 inches |
| 6.56 ounces | 6.07 ounces |
| Diamond black and Twilight blue | Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white |
| Glass (Corning Gorilla Glass 5) and Metal | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 549.00 | $ 282.00 |
| Display / Screen | |
| 6.4 inches | 6.5 inches |
| 2340 x 1080 pixels | 2400 x 1080 pixels |
| AMOLED | Super AMOLED |
| 403 pixels per inch | 405 pixels per inch |
| 430 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.4 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 855+ SM8150-AC chipset | Samsung 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 | 128 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 14.14 |
| Camera | |
| 48.00 MP | 48.00 MP + 32.00 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 | 1280 x 720 (240 fps) (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 | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 5.92 |
| Other Features | |
| Bluetooth 5.1 | Bluetooth 5.0 |
| GPS | GPS |
| -- | 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 |
Comparison review
Samsung Galaxy A51 has an overall score of 85.5, which is much better than nubia Z20's global score of 71.9. Samsung Galaxy A51 is a a little bit lighter and thinner cellphone than nubia Z20, although both were released only a couple of months apart. Both of these devices use Android OS, but Samsung Galaxy A51 has the previous 11 version while nubia Z20 has Android 9.0 Pie version.
The nubia Z20 counts with a bit sharper display than Samsung Galaxy A51, although it has a quite lower 1080 x 2340 resolution, a bit lower pixels count in each screen inch and a quite smaller screen. The nubia Z20 features a little better performance than Samsung Galaxy A51, and although they both have a Octa-Core processing unit, the nubia Z20 also has 4 GB more RAM memory.
Galaxy A51 counts with much more memory for games and applications than nubia Z20, and although they both have the same 128 GB internal memory, the Galaxy A51 also has an external SD slot that holds up to 512 GB. The Galaxy A51 has a battery life that's just as good as the nubia Z20 one. Samsung Galaxy A51 takes a little bit better photographs and videos than nubia Z20, because although it has a tinier aperture which is not favorable for capturing pictures in low light situations, and they both have the same 3840x2160 (4K) video quality, a 0.5 inches back camera sensor and a same resolution camera in the back, the Samsung Galaxy A51 also counts with higher video frame rates.
Galaxy A51 not only is the best phones of the ones we compare here, but it's also a lot cheaper.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.