Compare phones
| Global Score | |
| 88.5 | 85.5 |
| Basic Information | |
| Samsung | Samsung |
| Android 12, 11, 10 | Android 11, 10 |
| 2020-02-14 | 2019-12-27 |
| 6.59 x 2.90 x 0.28 inches | 6.24 x 2.90 x 0.31 inches |
| 6.46 ounces | 6.07 ounces |
| Mirror black and Mirror purple | Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white |
| Aluminum | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| $ 1380.00 | $ 282.00 |
| Display / Screen | |
| 6.7 inches | 6.5 inches |
| 2636 x 1080 pixels | 2400 x 1080 pixels |
| Dynamic AMOLED | Super AMOLED |
| 425 pixels per inch | 405 pixels per inch |
| No touch screen | No touch screen |
| 8.3 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 855+ SM8150-AC (7 nm) 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 | |
| 256 GB internal memory | 128 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 13.3 | 14.14 |
| Camera | |
| 12.00 MP + 10.00 MP | 48.00 MP + 32.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| 27.00mm focal length | 26.00mm focal length |
| 0.39 inches (1/2.55") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (60 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (960 fps) (HD) slow motion video | 1280 x 720 (240 fps) (HD) slow motion video |
| 10.23 | 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 | |
| 3300mAh Li - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 5.28 | 5.92 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
Galaxy Z Flip is a bit better than the Samsung Galaxy A51, having an 88.5 score against 85.5. These phones work with Android OS (Operating System), but Galaxy Z Flip has a more recent 12 version and Samsung Galaxy A51 has Android 11. Galaxy Z Flip's construction is a bit thinner but just a bit heavier than the Samsung Galaxy A51, and both were released only 2 months apart.
The Samsung Galaxy Z Flip counts with a bit superior CPU than Galaxy A51, and although they both have the same number of cores, the Samsung Galaxy Z Flip also has more RAM memory. Samsung Galaxy Z Flip has a bit sharper screen than Samsung Galaxy A51, because it has a little larger display, a slightly higher resolution of 1080 x 2636px and a little bit higher quantity of pixels in each inch of screen.
The Galaxy A51 takes much better pictures and videos than Samsung Galaxy Z Flip, because although it has a smaller aperture which is not nice for taking pictures or video in low light situations and worse 30 fps video frame rates, and they both have the same video resolution, the Galaxy A51 also counts with a back-facing camera with lot more megapixels and a much bigger sensor taking more light and vivid colors.
The Samsung Galaxy A51 has a little bit more memory for apps and games than Galaxy Z Flip, because although it has just 128 GB internal memory capacity, it also counts with an external SD slot that allows up to 512 GB. The Samsung Galaxy A51 counts with improved battery performance than Galaxy Z Flip, because it has a 21% larger battery size.
Although Samsung Galaxy Z Flip is a better device, it is a lot more expensive than the Galaxy A51, and it doesn't have such a good quality/price relation as the Galaxy A51. So if you need that extra features and specs, you can buy Samsung Galaxy Z Flip, else you can save some money and get the Galaxy A51, resigning some features and specs.
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