Compare phones
| Global Score | |
| 74.6 | 87 |
| Basic Information | |
| Samsung | Samsung |
| Android 8.0 Oreo | Android 11, 10 |
| -- | 2020-11-06 |
| 6.04 x 3.04 x 0.32 inches | 6.47 x 2.99 x 0.34 inches |
| 6.14 ounces | 6.81 ounces |
| 16 777 216 | Prism Dot black, Prism Dot grey and Prism Dot white |
| Plastic | -- |
| Scratch-Resistant Glass | -- |
| Display / Screen | |
| 5.5 inches | 6.6 inches |
| 1280 x 720 pixels (HD) | 1600 x 720 pixels |
| Super AMOLED | 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 7884 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 |
| 4 GB RAM | 4 GB RAM |
| ARM Mali-G71 GPU | Adreno 619 GPU |
| 8.82 | 9.18 |
| Storage | |
| 32 GB internal memory | 128 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | microSDXC (up to 1000 GB) external memory slot |
| 8.88 | 15.38 |
| Camera | |
| 13.00 MP + 8.00 MP | 48.00 MP + 20.00 MP |
| f/1.90 aperture | f/1.80 aperture |
| 27.00mm 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 |
| 9.02 | 11.11 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Micro SIM, Dual SIM | Nano SIM |
| 6.1 | 10.7 |
| Battery Life | |
| 3000mAh Battery | 5000mAh Battery |
| Removable Battery | Non-Removable Battery |
| 4.96 | 6.8 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
Samsung Galaxy A42 has a score of 87, which is much better than Galaxy J7 Duo's score of 74.6. The Samsung Galaxy A42 is a just a little heavier and a bit thicker device than Galaxy J7 Duo. Both phones in this review have Android OS (Operating System), but the Samsung Galaxy A42 has the older 11 version while Galaxy J7 Duo has Android 8.0 Oreo version.
The Samsung Galaxy A42 features a bit better hardware performance than Samsung Galaxy J7 Duo. Both have 8 cpu cores and a 4 GB RAM memory. Galaxy A42 features a little more vivid screen than Galaxy J7 Duo, because although it has a bit less pixels per inch of screen, it also counts with a bigger screen and a little bit higher resolution of 720 x 1600 pixels.
The Galaxy A42 has a much better memory to install applications and games or saving photos and videos than Galaxy J7 Duo, because it has more internal storage and an external memory card slot that supports a maximum of 1000 GB. The Galaxy A42 has a very superior camera than Samsung Galaxy J7 Duo, because it has a much better resolution back camera, a way better video quality and a bigger aperture to capture better low light photography.
The Samsung Galaxy A42 has a much better battery duration than Galaxy J7 Duo, because it has a 67% more battery capacity.
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