Compare phones
| Global Score | |
| 73.1 | 90.8 |
| Basic Information | |
| Samsung | Samsung |
| Android 9.0 Pie, 8.0 Oreo | Android 11, 10 |
| 2018-07-13 | 2020-04-29 |
| 6.03 x 3.00 x 0.34 inches | 6.26 x 2.90 x 0.34 inches |
| 6.38 ounces | 6.60 ounces |
| Blue | Prism cube black |
| -- | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 107.00 | $ 339.00 |
| Display / Screen | |
| 5.5 inches | 6.5 inches |
| 1280 x 720 pixels (HD) | 2400 x 1080 pixels |
| TFT | Super AMOLED |
| 267 pixels per inch | 405 pixels per inch |
| No touch screen | No touch screen |
| 7.1 | 8.1 |
| Performance | |
| Samsung Exynos 7 Octa 7870 chipset | Samsung Exynos 980 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1600 MHz) processor | ARM Cortex-A77 and ARM Cortex-A55, 64-bit, 8 nm (Octa-Core 2200 MHz) processor |
| 2 GB RAM | 6 GB RAM |
| Mali-T830 MP1 GPU | Mali-G76 MP5 GPU |
| 8.73 | 9.27 |
| 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 + 32.00 MP |
| f/1.70 aperture | f/2.00 aperture |
| 28.00mm focal length | 26.00mm focal length |
| 0.33 inches (1/3.06") sensor | 0.5 inches (1/2") 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 | 11.55 |
| 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 | 4500mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.28 | 6.32 |
| 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 |
| -- | FM Radio |
Comparison review
The Samsung Galaxy A51 5G is way better than the Samsung Galaxy J7 Star, with a 90.8 score against 73.1. Samsung Galaxy A51 5G's construction has the same thickness than Samsung Galaxy J7 Star, but it's just a bit heavier. Both phones we compare here work with Android operating system, but Samsung Galaxy A51 5G has an older 11 version and Samsung Galaxy J7 Star has Android 9.0 Pie.
The Galaxy A51 5G counts with a brighter display than Galaxy J7 Star, because it has a way greater pixel quantity per inch of screen, a way higher 1080 x 2400 pixels resolution and a larger display. Samsung Galaxy A51 5G has a bit better hardware performance than Samsung Galaxy J7 Star, and although they both have 8 cpu cores, the Samsung Galaxy A51 5G also has 4 GB more RAM.
The Galaxy A51 5G counts with a very superior storage to install games and applications than Galaxy J7 Star, because it has an external memory slot that holds up to 1000 GB and more internal memory. Galaxy A51 5G captures much better photographs and videos than Galaxy J7 Star, because although it has a smaller camera aperture, it also counts with a way bigger back-facing camera sensor shooting lot better quality videos and pictures, a camera in the back with much more megapixels and a much better video resolution.
The Galaxy A51 5G features better battery lifetime than Samsung Galaxy J7 Star, because it has a 4500mAh battery capacity instead of 3300mAh.
Samsung Galaxy A51 5G costs a lot more money than Samsung Galaxy J7 Star, but it's still a great choice, because you can get a better phone for that extra money.
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