Compare phones
| Global Score | |
| 49.8 | 73.1 |
| Basic Information | |
| AT&T | Samsung |
| Android 4.1 | Android 9.0 Pie, 8.0 Oreo |
| -- | 2018-07-13 |
| 5.20 x 2.60 x 0.40 inches | 6.03 x 3.00 x 0.34 inches |
| 4.80 ounces | 6.38 ounces |
| Black | Blue |
| -- | Scratch-Resistant Glass |
| $ 105.00 | $ 107.00 |
| Display / Screen | |
| 4.5 inches | 5.5 inches |
| 540 x 960 pixels | 1280 x 720 pixels (HD) |
| TFT | TFT |
| 245 pixels per inch | 267 pixels per inch |
| Capacitive, Multi-touch | No touch screen |
| 7.3 | 7.1 |
| Performance | |
| Qualcomm Snapdragon S4 Plus MSM8930 chipset | Samsung Exynos 7 Octa 7870 chipset |
| Krait (Dual-Core 1200 MHz) processor | ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1600 MHz) processor |
| 1 GB (533 MHz) RAM | 2 GB RAM |
| Adreno 305 (450 MHz) GPU | Mali-T830 MP1 GPU |
| 8.19 | 8.73 |
| Storage | |
| 4 GB internal memory | 32 GB internal memory |
| microSD, microSDHC (up to 32 GB) external memory slot | microSDXC (up to 400 GB) external memory slot |
| 3.82 | 9.44 |
| Camera | |
| 5.00 MP | 13.00 MP + 13.00 MP |
| -- | f/1.70 aperture |
| -- | 28.00mm focal length |
| -- | 0.33 inches (1/3.06") sensor |
| 1280 x 720 (HD) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 5.5 | 9.13 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA, EDGE, GPRS and GSM | LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| SIM | Nano SIM |
| 6.4 | 6.6 |
| Battery Life | |
| 2070mAh Battery | 3300mAh Li - Polymer Battery |
| Removable Battery | Non-Removable Battery |
| 4 hours talk time | -- |
| 4 | 5.28 |
| Other Features | |
| Bluetooth 4.0 | Bluetooth 4.2 |
| GPS | GPS |
| -- | NFC |
| Accelerometer, Compass, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
Comparison review
The Galaxy J7 Star is way better than AT&T Z998, with a 73.1 score against 49.8. Both phones we are comparing come with Android OS, but Galaxy J7 Star has newer 9.0 Pie version while AT&T Z998 has Android 4.1 version, providing the user a lot of extra features and some performance improvements. The Galaxy J7 Star body is thinner but heavier than AT&T Z998.
The Samsung Galaxy J7 Star features a bit faster CPU than AT&T Z998, because although it has doesn't have an additional graphics processor, it also counts with 6 more CPU cores and more RAM. The AT&T Z998 has a little bit better looking screen than Galaxy J7 Star, although it has a lot worse 960 x 540px resolution, a little bit less pixels per inch in the display and a little smaller screen.
The Samsung Galaxy J7 Star features a way bigger memory to install applications and games or saving photos and videos than AT&T Z998, because it has 32 GB internal storage and a SD card slot that supports a maximum of 400 GB. The Samsung Galaxy J7 Star has a much better camera than AT&T Z998, because it has a way better 13 megapixels resolution camera and a lot better 1920x1080 video definition.
Galaxy J7 Star counts with a superior battery performance than AT&T Z998, because it has 3300mAh of battery capacity against 2070mAh.
Galaxy J7 Star costs a bit more than the AT&T Z998, but you can get a much better phone for that few extra dollars.
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