| Global Score | |
| 49.8 | 53.4 |
| Basic Information | |
| AT&T | Samsung |
| Android 4.1 | Windows Mobile Professional 6.5 |
| -- | 2009-06-15 |
| 5.20 x 2.60 x 0.40 inches | 4.65 x 2.36 x 0.47 inches |
| 4.80 ounces | 4.34 ounces |
| Black | -- |
| $ 105.00 | $ 79.00 |
| Display / Screen | |
| 4.5 inches | 3.7 inches |
| 540 x 960 pixels | 480 x 800 pixels |
| TFT | AMOLED |
| 245 pixels per inch | 252 pixels per inch |
| Capacitive, Multi-touch | Resistive |
| 7.3 | 6.8 |
| Performance | |
| Qualcomm Snapdragon S4 Plus MSM8930 chipset | -- |
| Krait (Dual-Core 1200 MHz) processor | Single-Core 800 MHz processor |
| 1 GB (533 MHz) RAM | 256 MB RAM |
| Adreno 305 (450 MHz) GPU | GPU |
| 8.19 | 7.11 |
| Storage | |
| 4 GB internal memory | 16 GB internal memory |
| microSD, microSDHC (up to 32 GB) external memory slot | microSD, microSDHC external memory slot |
| 3.82 | 4.4 |
| Camera | |
| 5.00 MP | 5.00 MP |
| 1280 x 720 (HD) video resolution | 720 x 480 (30 fps) video resolution |
| 5.5 | 6.16 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | -- |
| LTE (4G), HSPA, EDGE, GPRS and GSM | HSDPA, HSUPA, UMTS, EDGE and GSM |
| SIM | SIM |
| 6.4 | 3.5 |
| Battery Life | |
| 2070mAh Battery | 1500mAh Li-Ion Battery |
| Removable Battery | Removable Battery |
| 4 hours talk time | 430 hours standby time 10 hours talk time |
| 4 | 3.28 |
| Other Features | |
| Bluetooth 4.0 | Bluetooth 2.0 |
| GPS | GPS |
| Accelerometer, Compass, Light Sensor and Proximity Sensor | Accelerometer and Proximity Sensor |
The Samsung Omnia II has a general score of 53.4, which is slightly better than AT&T Z998's general score of 49.8. The Samsung Omnia II body is a bit lighter but somewhat thicker than AT&T Z998. The Samsung Omnia II works with Windows Mobile Professional 6.5 operating system, while AT&T Z998 counts with Android 4.1 operating system.
The AT&T Z998 has a faster processor than Samsung Omnia II, because it has a greater number of cores (and they are faster), a GPU and a larger amount of RAM memory. The AT&T Z998 counts with a bit better looking display than Samsung Omnia II, because although it has a just a little lower pixel amount per inch in the screen, it also counts with a slightly better 960 x 540px resolution and a bigger screen.
The Samsung Omnia II has a greater storage capacity for games and applications than AT&T Z998, because although it has no slot for external memory cards, it also counts with 16 GB internal memory capacity. The AT&T Z998 counts with a much better battery lifetime than Samsung Omnia II, because it has 2070mAh of battery capacity instead of 1500mAh.
Samsung Omnia II shoots better photographs and videos than AT&T Z998. Both have the same video frame rate, a same resolution back camera and the same video definition.
Samsung Omnia II is not only the best phones in this comparison, but it's also by far the cheapest one.
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