Compare phones
| Global Score | |
| 73.1 | 90.6 |
| Basic Information | |
| Samsung | Samsung |
| Android 9.0 Pie, 8.0 Oreo | Android 11 |
| 2018-07-13 | 2021-08-11 |
| 6.03 x 3.00 x 0.34 inches | 6.23 x 5.04 x 0.25 inches |
| 6.38 ounces | 9.56 ounces |
| Blue | Phantom Black, Phantom Green and Phantom Silver |
| -- | Aluminum and Glass |
| Scratch-Resistant Glass | -- |
| $ 107.00 | -- |
| Display / Screen | |
| 5.5 inches | 7.6 inches |
| 1280 x 720 pixels (HD) | 2208 x 1768 pixels |
| TFT | Super AMOLED |
| 267 pixels per inch | 372 pixels per inch |
| No touch screen | No touch screen |
| 7.1 | 8 |
| Performance | |
| Samsung Exynos 7 Octa 7870 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 |
| 2 GB RAM | 12 GB RAM |
| Mali-T830 MP1 GPU | Adreno 660 GPU |
| 8.73 | 9.72 |
| Storage | |
| 32 GB internal memory | 256 GB internal memory |
| microSDXC (up to 400 GB) external memory slot | No SD card slot |
| 9.44 | 13.3 |
| Camera | |
| 13.00 MP + 13.00 MP | 12.00 MP + 4.00 MP |
| f/1.70 aperture | f/2.20 aperture |
| 28.00mm focal length | -- |
| 0.33 inches (1/3.06") sensor | -- |
| 1920 x 1080 (30 fps) (Full HD) video resolution | -- |
| 9.13 | 7.7 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA+ (4G), HSDPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA |
| Nano SIM | Nano SIM, Dual SIM |
| 6.6 | 10.6 |
| Battery Life | |
| 3300mAh Li - Polymer Battery | 4400mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.28 | 6.24 |
| Other Features | |
| Bluetooth 4.2 | Bluetooth 5.2 |
| GPS | GPS |
| NFC | NFC |
| -- | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
Comparison review
Samsung Galaxy Z Fold 3 has a score of 90.6, which is much better than Samsung Galaxy J7 Star's 73.1 score. These phones include Android operating system, but the Samsung Galaxy Z Fold 3 has the older 11 version and Samsung Galaxy J7 Star has Android 9.0 Pie. Although the Samsung Galaxy Z Fold 3 is much heavier than the Samsung Galaxy J7 Star, it's incredibly thinner and notably newer.
The Galaxy Z Fold 3 features a faster processor than Samsung Galaxy J7 Star, and although they both have 8 cores, the Galaxy Z Fold 3 also has a greater amount of RAM memory. Galaxy Z Fold 3 features a more vivid screen than Samsung Galaxy J7 Star, because it has a higher pixels quantity in each display inch, a really bigger screen and a way better 1768 x 2208px resolution.
The Galaxy J7 Star counts with a much better camera than Galaxy Z Fold 3, because it has a more megapixels back facing camera and a much bigger diafragm aperture. Samsung Galaxy Z Fold 3 has a much better memory for games and applications than Galaxy J7 Star, because although it has no external SD slot, it also counts with 224 GB more internal storage.
Samsung Galaxy Z Fold 3 features improved battery life than Samsung Galaxy J7 Star, because it has 4400mAh of battery capacity.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.