| Global Score | |
| 49.8 | 54.4 |
| Basic Information | |
| AT&T | Samsung |
| Android 4.1 | Windows Phone 7.5 Mango |
| -- | 2012-05-11 |
| 5.20 x 2.60 x 0.40 inches | 4.79 x 2.52 x 0.41 inches |
| 4.80 ounces | 4.21 ounces |
| Black | -- |
| -- | Scratch-Resistant Glass |
| $ 105.00 | $ 85.00 |
| Display / Screen | |
| 4.5 inches | 4 inches |
| 540 x 960 pixels | 480 x 800 pixels |
| TFT | Super AMOLED |
| 245 pixels per inch | 233 pixels per inch |
| Capacitive, Multi-touch | Capacitive, Multi-touch |
| 7.3 | 7.1 |
| Performance | |
| Qualcomm Snapdragon S4 Plus MSM8930 chipset | Qualcomm Snapdragon S1 MSM7227A chipset |
| Krait (Dual-Core 1200 MHz) processor | ARM Cortex-A5 (Single-Core 1000 MHz) processor |
| 1 GB (533 MHz) RAM | 384 MB RAM |
| Adreno 305 (450 MHz) GPU | Adreno 200 (enhanced) (200 MHz) GPU |
| 8.19 | 7.47 |
| Storage | |
| 4 GB internal memory | 4 GB internal memory |
| microSD, microSDHC (up to 32 GB) external memory slot | No SD card slot |
| 3.82 | 2.5 |
| Camera | |
| 5.00 MP | 5.00 MP + 0.30 MP |
| 1280 x 720 (HD) video resolution | 640 x 480 (30 fps) (VGA) video resolution |
| 5.5 | 6.49 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | -- |
| LTE (4G), HSPA, EDGE, GPRS and GSM | HSDPA, UMTS, EDGE, GPRS and GSM |
| SIM | SIM |
| 6.4 | 3.4 |
| Battery Life | |
| 2070mAh Battery | 1500mAh Li-Ion Battery |
| Removable Battery | Removable Battery |
| 4 hours talk time | 530 hours standby time 12.7 hours talk time |
| 4 | 3.28 |
| Other Features | |
| Bluetooth 4.0 | Bluetooth 2.1, EDR |
| GPS | GPS |
| Accelerometer, Compass, Light Sensor and Proximity Sensor | Accelerometer, Compass, Light Sensor and Proximity Sensor |
Samsung Omnia M has a global score of 54.4, which is slightly better than the AT&T Z998's 49.8 global score. Samsung Omnia M's design is just a little bit thicker but lighter than AT&T Z998. The Samsung Omnia M counts with Windows Phone 7.5 Mango operating system, and AT&T Z998 works with Android 4.1 operating system.
AT&T Z998 counts with just a bit better looking display than Samsung Omnia M, because it has a little bigger display, a bit greater screen pixel density and a bit higher 960 x 540 resolution. The AT&T Z998 counts with a bit more powerful processor than Samsung Omnia M, because it has more RAM memory, a greater number of cores and a better graphics processor running at 450 MHz.
Samsung Omnia M shoots much clearer videos and photos than AT&T Z998. They have a 5 mega pixels resolution camera, the same video frame rate and the same video resolution. The AT&T Z998 has a much better storage capacity to store more games and applications than Samsung Omnia M, and although they both have the same internal memory, the AT&T Z998 also has a slot for SD memory cards that allows up to 32 GB.
AT&T Z998 features a way better battery life than Samsung Omnia M, because it has a 2070mAh battery size instead of 1500mAh.
In addition to being the best phone in this comparison, the Samsung Omnia M is also a lot cheaper.
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