Compare phones
| Global Score | |
| 73.1 | 87 |
| Basic Information | |
| Samsung | Samsung |
| Android 9.0 Pie, 8.0 Oreo | Android 11, 10 |
| 2018-07-13 | 2020-11-06 |
| 6.03 x 3.00 x 0.34 inches | 6.47 x 2.99 x 0.34 inches |
| 6.38 ounces | 6.81 ounces |
| Blue | Prism Dot black, Prism Dot grey and Prism Dot white |
| Scratch-Resistant Glass | -- |
| $ 107.00 | -- |
| Display / Screen | |
| 5.5 inches | 6.6 inches |
| 1280 x 720 pixels (HD) | 1600 x 720 pixels |
| TFT | Super AMOLED |
| 267 pixels per inch | 266 pixels per inch |
| No touch screen | No touch screen |
| 7.1 | 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 |
| 2 GB RAM | 4 GB RAM |
| Mali-T830 MP1 GPU | Adreno 619 GPU |
| 8.73 | 9.18 |
| Storage | |
| 32 GB internal memory | 128 GB internal memory |
| microSDXC (up to 400 GB) external memory slot | microSDXC (up to 1000 GB) external memory slot |
| 9.44 | 15.38 |
| Camera | |
| 13.00 MP + 13.00 MP | 48.00 MP + 20.00 MP |
| f/1.70 aperture | f/1.80 aperture |
| 28.00mm focal length | -- |
| 0.33 inches (1/3.06") sensor | -- |
| 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 |
| 9.13 | 11.11 |
| 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), HSDPA and HSUPA |
| Nano SIM | Nano SIM |
| 6.6 | 10.7 |
| Battery Life | |
| 3300mAh Li - Polymer Battery | 5000mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.28 | 6.8 |
| Other Features | |
| Bluetooth 4.2 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| -- | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
Comparison review
The Galaxy A42 has a global score of 87, which is much better than the Samsung Galaxy J7 Star's 73.1 score. Both of these phones come with Android OS (operating system), but the Galaxy A42 has the previous 11 version while Samsung Galaxy J7 Star has Android 9.0 Pie. Galaxy A42 is a just a little heavier cellphone than Samsung Galaxy J7 Star, but both have the same thickness.
The Galaxy A42 counts with a bit sharper screen than Galaxy J7 Star, because although it has a bit worse screen density, it also counts with a larger display and a little higher 720 x 1600 pixels resolution. Galaxy A42 features a much bigger memory capacity to install games and applications than Galaxy J7 Star, because it has 128 GB internal storage and a slot for external memory cards that holds up to 1000 GB.
The Samsung Galaxy A42 has just a little better processing power than Galaxy J7 Star, and although they both have the same number of cores, the Samsung Galaxy A42 also has a larger amount of RAM. The Samsung Galaxy A42 counts with a really longer battery lifetime than Galaxy J7 Star, because it has a 5000mAh battery capacity.
The Galaxy A42 features a lot better camera than Galaxy J7 Star, because although it has a tinier aperture which is not favorable for capturing photographs or video in low light situations, it also counts with a lot better resolution camera and a way higher video definition.
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