Compare phones
| Global Score | |
| 74.6 | 90.6 |
| Basic Information | |
| Samsung | Samsung |
| Android 8.0 Oreo | Android 11 |
| -- | 2021-08-11 |
| 6.04 x 3.04 x 0.32 inches | 6.23 x 5.04 x 0.25 inches |
| 6.14 ounces | 9.56 ounces |
| 16 777 216 | Phantom Black, Phantom Green and Phantom Silver |
| Plastic | Aluminum and Glass |
| Scratch-Resistant Glass | -- |
| Display / Screen | |
| 5.5 inches | 7.6 inches |
| 1280 x 720 pixels (HD) | 2208 x 1768 pixels |
| Super AMOLED | Super AMOLED |
| 267 pixels per inch | 372 pixels per inch |
| No touch screen | No touch screen |
| 7.1 | 8 |
| Performance | |
| Samsung Exynos 7 Octa 7884 chipset | Qualcomm Snapdragon 888 SM8350 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1600 MHz) processor | Kryo 680 Prime, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 4 GB RAM | 12 GB RAM |
| ARM Mali-G71 GPU | Adreno 660 GPU |
| 8.82 | 9.72 |
| Storage | |
| 32 GB internal memory | 256 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | No SD card slot |
| 8.88 | 13.3 |
| Camera | |
| 13.00 MP + 8.00 MP | 12.00 MP + 4.00 MP |
| f/1.90 aperture | f/2.20 aperture |
| 27.00mm focal length | -- |
| 0.33 inches (1/3.06") sensor | -- |
| 1920 x 1080 (30 fps) (Full HD) video resolution | -- |
| 9.02 | 7.7 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA |
| Micro SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.1 | 10.6 |
| Battery Life | |
| 3000mAh Battery | 4400mAh Battery |
| Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 4.96 | 6.24 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.2 |
| GPS | GPS |
| -- | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
Samsung Galaxy Z Fold 3 is a lot better than the Samsung Galaxy J7 Duo, getting a 90.6 score against 74.6. The Samsung Galaxy Z Fold 3 is a a lot thinner but heavier device than Samsung Galaxy J7 Duo. Both phones in our current comparison have Android OS (Operating System), but Samsung Galaxy Z Fold 3 has an older 11 version and Samsung Galaxy J7 Duo has Android 8.0 Oreo.
Galaxy Z Fold 3 features a brighter screen than Galaxy J7 Duo, because it has a greater pixel number in each inch in the screen, a much better resolution of 1768 x 2208 and a lot bigger screen. Samsung Galaxy Z Fold 3 counts with a better hardware performance than Samsung Galaxy J7 Duo, and although they both have the same number of cores, the Samsung Galaxy Z Fold 3 also has more RAM memory.
The Galaxy J7 Duo counts with a better camera than Samsung Galaxy Z Fold 3, because it has a larger diafragm aperture to take better images and video in low light situations and a back facing camera with a higher resolution. The Galaxy Z Fold 3 features a lot bigger memory to install applications and games or saving photos and videos than Samsung Galaxy J7 Duo, because although it has no SD memory slot, it also counts with 224 GB more internal memory.
The Galaxy Z Fold 3 features a superior battery life than Galaxy J7 Duo, because it has 4400mAh of battery capacity instead of 3000mAh.
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