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| Phone | Casio G'zOne Rock | Samsung SCH-A990 | Samsung SGH-A157 |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size |
2.1" diag. 4 : 3 |
? |
1.8" diag. 4 : 3 |
| Display Resolution & Type |
240 x 320 pixels (~190 ppi) LCD (TFT/TFD) |
240 x 320 pixels LCD (TFT/TFD) |
128 x 160 pixels (~116 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? |
| Battery | 1,150 mAh | 1,000 mAh | 800 mAh |
| Processor | ? | ? | ? |
| RAM | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | 256 MB |
| Main Camera | 2 megapixel | 3 megapixel | - |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | ? | ? | - |
| Front Camera | - | - | - |
| Weight |
4.4 oz (125g) |
4.4 oz (125g) |
2.99 oz (85g) |
| Dimensions |
4.1" x 2" x 0.9" (104 x 51 x 22.9 mm) |
3.8" x 1.88" x 0.82" (97 x 48 x 20.8 mm) |
3.83" x 1.84" x 0.65" (97 x 47 x 16.5 mm) |
| Form Factor | Clamshell | Clamshell | Clamshell |
| Platform / OS | (proprietary) | (proprietary) | (proprietary) |
| Network Bands |
CDMA: 850, 1900 |
CDMA: 850, 1900 |
WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 |
| Data Technology | EVDO rA | EVDO r0 | ? |
| Features | |||
| Flashlight | Yes | Yes | - |
| GPS / Location | Yes | Yes | Yes |
| Ruggedized | Yes | - | - |
| Water-Resistant | Yes | - | - |
| Accessibility | |||
| Adjustable Text Size | - | - | Yes |
| Hearing Aid Compatible |
Yes M4, T4 (very tele-coil compatible) |
Yes M3 (mostly compatible) |
Yes M4 (very compatible) |
| Multiple Languages | Yes | Yes | Yes |
| TTY/TDD (Digital) | Yes | Yes | Yes |
| Alerts | |||
| Extra Display | Yes | Yes | - |
| Ringer Profiles | - | - | Yes |
| Connectivity | |||
| Bluetooth | Yes | Yes | - |
| USB | Yes | Yes |
Yes Micro-USB |
| Contacts | |||
| Picture ID | Yes | Yes | Yes |
| Ringer ID | Yes | Yes | Yes |
| Voice Dialing | Yes | Yes | - |
| Customization | |||
| Custom Graphics | Yes | Yes | Yes |
| Custom Ringtones | Yes | Yes | Yes |
| Real-Music Ringers | Yes | Yes | Yes |
| Data & Network | |||
| Data Tethering | Yes | Yes | - |
| WAP / Web Browser | Yes | Yes | Yes |
| Input | |||
| Predictive Text Entry | Yes | Yes | Yes |
| Side Keys | Yes | Yes | - |
| Memory | |||
| Memory Card Slot | Yes | Yes | - |
| Messaging | |||
| Email Client | Yes | - | - |
| EMS / Picture Messaging | - | Yes | - |
| Instant Messaging | Yes | - | - |
| MMS | Yes | Yes | Yes |
| Text Messaging Templates | Yes | Yes | Yes |
| Music | |||
| Music Player | Yes | Yes | - |
| Stereo Speakers | - | Yes | - |
| Photo & Video | |||
| TV Output | - | Yes | - |
| Productivity | |||
| Alarm | Yes | Yes | Yes |
| Calculator | Yes | Yes | Yes |
| Calendar | Yes | Yes | Yes |
| To-Do List | - | - | Yes |
| Voice Memo | Yes | Yes | Yes |
| Software | |||
| BREW | Yes | Yes | - |
| Games | Yes | Yes | - |
| Voice | |||
| Headset Jack (2.5 mm) | Yes | - | - |
| Push-To-Talk | Yes | - | - |
| Speaker Phone | Yes | Yes | Yes |
| Casio G'zOne Rock | Samsung SCH-A990 | Samsung SGH-A157 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Casio G'zOne Rock | Samsung SCH-A990 | Samsung SGH-A157 |
