Compare phones
| Global Score | |
| 73.1 | 90.7 |
| Basic Information | |
| Samsung | Samsung |
| Android 9.0 Pie, 8.0 Oreo | Android 14 |
| 2018-07-13 | -- |
| 6.03 x 3.00 x 0.34 inches | -- |
| 6.38 ounces | -- |
| Blue | -- |
| -- | Glass (Corning Gorilla Glass) and Titanium |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 107.00 | -- |
| Display / Screen | |
| 5.5 inches | 6.8 inches |
| 1280 x 720 pixels (HD) | 3088 x 1440 pixels |
| TFT | Dynamic AMOLED |
| 267 pixels per inch | 501 pixels per inch |
| -- | 2600 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.1 | 10.2 |
| Performance | |
| Samsung Exynos 7 Octa 7870 chipset | Qualcomm Snapdragon 8 Gen 4 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1600 MHz) processor | processor |
| 2 GB RAM | 12 GB RAM |
| Mali-T830 MP1 GPU | Yes GPU |
| 8.73 | 6.21 |
| Storage | |
| 32 GB internal memory | 256 GB internal memory |
| microSDXC (up to 400 GB) external memory slot | No SD card slot |
| 9.44 | 13.3 |
| Camera | |
| 13.00 MP + 13.00 MP | 200.00 MP + 12.00 MP |
| f/1.70 aperture | f/1.70 aperture |
| 28.00mm focal length | 24.00mm focal length |
| 0.33 inches (1/3.06") sensor | 0.77 inches (1/1.3") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 7680 x 4320 (30 fps) video resolution |
| -- | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 9.13 | 14.74 |
| 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) and HSDPA |
| Nano SIM | Nano SIM |
| 6.6 | 10.6 |
| Battery Life | |
| 3300mAh Li - Polymer Battery | 5000mAh Li - Ion Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.28 | 6.8 |
| Other Features | |
| Bluetooth 4.2 | Bluetooth 5.3 |
| GPS | GPS |
| NFC | NFC |
| -- | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
Comparison review
Galaxy S25 Ultra is a lot better than the Galaxy J7 Star, with a global score of 90.7 against 73.1. Galaxy S25 Ultra is a extremely lighter and noticeably thinner cellphone than Galaxy J7 Star. These devices use Android OS, but the Galaxy S25 Ultra has the older 14 version and Galaxy J7 Star has Android 9.0 Pie.
Samsung Galaxy S25 Ultra has a much sharper display than Galaxy J7 Star, because it has a bigger screen, a lot better 1440 x 3088px resolution and a much higher pixels density. Samsung Galaxy S25 Ultra features a much bigger storage to install applications and games than Galaxy J7 Star, because although it has no external memory slot, it also counts with more internal memory.
Samsung Galaxy J7 Star features an extremely better processor than Galaxy S25 Ultra, although it has less RAM memory, they both have a Octa-Core processor. The Samsung Galaxy S25 Ultra features a much better camera than Galaxy J7 Star, and although they both have the same aperture, the Samsung Galaxy S25 Ultra also has a lot more MP back camera, a lot larger back camera sensor and a lot higher 7680x4320 video resolution.
Galaxy S25 Ultra features a much better battery lifetime than Galaxy J7 Star, because it has a 52% larger battery size.
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