Compare phones
| Global Score | |
| 73.5 | 87 |
| Basic Information | |
| Samsung | Samsung |
| Android 9.0 Pie, 7.0 Nougat | Android 11, 10 |
| 2017-07-01 | 2020-11-06 |
| 6.00 x 2.94 x 0.31 inches | 6.47 x 2.99 x 0.34 inches |
| 6.38 ounces | 6.81 ounces |
| Black, Gold, Rose gold and Silver | Prism Dot black, Prism Dot grey and Prism Dot white |
| Aluminum | -- |
| Display / Screen | |
| 5.5 inches | 6.6 inches |
| 1920 x 1080 pixels (Full HD) | 1600 x 720 pixels |
| Super AMOLED | Super AMOLED |
| 401 pixels per inch | 266 pixels per inch |
| No touch screen | No touch screen |
| 7.9 | 7.2 |
| Performance | |
| Samsung Exynos 7 Octa 7870 chipset | Qualcomm Snapdragon 750G SM7225 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1600 MHz) processor | Kryo 570, 64-bit, 8 nm (Octa-Core 2200 MHz) processor |
| 3 GB RAM | 4 GB RAM |
| Mali-T830 MP2 GPU | Adreno 619 GPU |
| 8.73 | 9.18 |
| Storage | |
| 16 GB internal memory | 128 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | microSDXC (up to 1000 GB) external memory slot |
| 7.48 | 15.38 |
| Camera | |
| 13.00 MP + 13.00 MP | 48.00 MP + 20.00 MP |
| f/1.70 aperture | f/1.80 aperture |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1280 x 720 (480 fps) (HD) slow motion video |
| 9.02 | 11.11 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.7 | 10.7 |
| Battery Life | |
| 3600mAh Battery | 5000mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.6 | 6.8 |
| Other Features | |
| Bluetooth 4.1 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | 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
The Galaxy A42 is better than the Galaxy J7 (2017), with an 87 score against 73.5. Galaxy A42 is a notably newer cellphone than Galaxy J7 (2017), although it is just a little bit heavier and a bit thicker. These phones have Android OS, but Galaxy A42 has an older 11 version and Galaxy J7 (2017) has Android 9.0 Pie version.
The Galaxy J7 (2017) counts with a little sharper screen than Samsung Galaxy A42, because although it has a bit smaller screen, it also counts with a way better pixels amount per screen inch and a higher 1080 x 1920 pixels resolution. Samsung Galaxy A42 has a little better performance than Galaxy J7 (2017), and although they both have a Octa-Core processor, the Samsung Galaxy A42 also has more RAM.
The Samsung Galaxy A42 counts with a superior memory for applications, games, photos and videos than Galaxy J7 (2017), because it has 112 GB more internal storage capacity and a slot for an external memory card that supports up to 1000 GB. The Samsung Galaxy A42 counts with a really longer battery lifetime than Galaxy J7 (2017), because it has 5000mAh of battery capacity instead of 3600mAh.
The Galaxy A42 has a lot better camera than Samsung Galaxy J7 (2017), because although it has a smaller camera aperture which is worse for low light photography and video, it also counts with a lot more megapixels back facing camera and a lot higher video definition.
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