Compare phones
| Global Score | |
| 90.6 | 81.3 |
| Basic Information | |
| Samsung | Samsung |
| Android 11 | Android 10 |
| 2021-08-11 | 2020-04-27 |
| 6.23 x 5.04 x 0.25 inches | 6.27 x 2.88 x 0.34 inches |
| 9.56 ounces | 6.53 ounces |
| Phantom Black, Phantom Green and Phantom Silver | Prism Crush black, Prism Crush blue, Prism Crush red and Prism Crush white |
| Aluminum and Glass | Plastic |
| Display / Screen | |
| 7.6 inches | 6.4 inches |
| 2208 x 1768 pixels | 2400 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 372 pixels per inch | 411 pixels per inch |
| No touch screen | No touch screen |
| 8 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 888 SM8350 chipset | MediaTek Helio P65 MT6768 chipset |
| Kryo 680 Prime, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | Arm Cortex-A75 and Arm Cortex-A55, 64-bit, 12 nm (Octa-Core 2000 MHz) processor |
| 12 GB RAM | 4 GB RAM |
| Adreno 660 GPU | Mali-G52 MC2 GPU |
| 9.72 | 9.09 |
| Storage | |
| 256 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 13.3 | 11.74 |
| Camera | |
| 12.00 MP + 4.00 MP | 48.00 MP + 20.00 MP |
| f/2.20 aperture | f/2.00 aperture |
| -- | 26.00mm focal length |
| -- | 0.5 inches (1/2") sensor |
| -- | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 7.7 | 10.89 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 10.6 | 6.7 |
| Battery Life | |
| 4400mAh Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 6.24 | 6.8 |
| Other Features | |
| Bluetooth 5.2 | 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 |
Comparison review
Samsung Galaxy Z Fold 3 is better than Galaxy A31, getting a 90.6 score against 81.3. Both devices in this review use Android operating system, but Samsung Galaxy Z Fold 3 has newer 11 version while Galaxy A31 has Android 10 version. Samsung Galaxy Z Fold 3's construction is newer and noticeably thinner, but also way heavier than Galaxy A31.
The Samsung Galaxy A31 counts with a little more vivid display than Galaxy Z Fold 3, because although it has a little bit worse 1080 x 2400 resolution and a little smaller screen, it also counts with a bit greater pixel density. The Galaxy Z Fold 3 has just a little better hardware performance than Galaxy A31, and although they both have the same number of cores, the Galaxy Z Fold 3 also has 8 GB more RAM.
The Galaxy Z Fold 3 counts with a bigger memory for applications, games, photos and videos than Galaxy A31, because although it has no slot for external memory cards, it also counts with 256 GB internal storage. The Galaxy A31 captures much clearer pictures and videos than Galaxy Z Fold 3, because it has a larger camera aperture and a way more megapixels back camera.
Samsung Galaxy A31 features a bit superior battery lifetime than Samsung Galaxy Z Fold 3, because it has a 14 percent greater battery capacity.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.