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| Phone | Casio G'zOne Rock | Samsung SGH-T239 | BlackBerry 7750 | Motorola Rival A455 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
2.1" diag. 4 : 3 |
? | ? |
2.2" diag. 4 : 3 |
| Display Resolution & Type |
240 x 320 pixels (~190 ppi) LCD (TFT/TFD) |
176 x 220 pixels LCD (TFT/TFD) |
240 x 240 pixels LCD (Color) |
176 x 220 pixels (~131 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? | ? |
| Battery | 1,150 mAh | ? | ? | 940 mAh |
| Processor | ? | ? | ? | ? |
| RAM | ? | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | 2 megapixel | Yes | - | 2 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | ? | - | - | QVGA (320 x 240) |
| Front Camera | - | - | - | - |
| Weight |
4.4 oz (125g) |
3.34 oz (95g) |
5.01 oz (142g) |
4.48 oz (127g) |
| Dimensions |
4.1" x 2" x 0.9" (104 x 51 x 22.9 mm) |
3.78" x 1.87" x 0.68" (96 x 47 x 17.3 mm) |
4.76" x 3.03" x 0.71" (121 x 77 x 18 mm) |
3.82" x 1.96" x 0.73" (97 x 50 x 18.5 mm) |
| Form Factor | Clamshell | Slide | Slab | Slide |
| Platform / OS | (proprietary) | (proprietary) | BlackBerry OS | (proprietary) |
| Network Bands |
CDMA: 850, 1900 |
GSM: 850, 1900 |
CDMA: 850, 1900 |
CDMA: 850, 1900 |
| Data Technology | EVDO rA | GPRS | 1xRTT | EVDO r0 |
| Features | ||||
| Flashlight | Yes | - | - | - |
| GPS / Location | Yes | - | n/a | Yes |
| Ruggedized | Yes | - | - | - |
| Water-Resistant | Yes | - | - | - |
| Accessibility | ||||
| Hearing Aid Compatible |
Yes M4, T4 (very tele-coil compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
- |
Yes M3, T3 (mostly tele-coil compatible) |
| Multiple Languages | Yes | Yes | n/a | Yes |
| TTY/TDD (Digital) | Yes | - | Yes | Yes |
| Alerts | ||||
| Extra Display | Yes | - | - | - |
| Ringer Profiles | - | - | Yes | - |
| Connectivity | ||||
| Bluetooth | Yes | Yes | - | Yes |
| USB | Yes | - | Yes |
Yes Micro-USB |
| Contacts | ||||
| Picture ID | Yes | Yes | n/a | Yes |
| Ringer ID | Yes | Yes | n/a | Yes |
| Voice Dialing | Yes | - | n/a | Yes |
| Customization | ||||
| Custom Graphics | Yes | Yes | n/a | Yes |
| Custom Ringtones | Yes | Yes | n/a | Yes |
| Real-Music Ringers | Yes | Yes | n/a | Yes |
| Data & Network | ||||
| Data Tethering | Yes | - | n/a | Yes |
| WAP / Web Browser | Yes | Yes | n/a | Yes |
| Input | ||||
| Predictive Text Entry | Yes | Yes | n/a | - |
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | - | Yes | Yes |
| Touch Screen | - | - | - | Yes |
| Memory | ||||
| Memory Card Slot | Yes | - | - | Yes |
| Messaging | ||||
| Email Client | Yes | - | n/a | Yes |
| EMS / Picture Messaging | - | Yes | n/a | Yes |
| Instant Messaging | Yes | Yes | n/a | Yes |
| MMS | Yes | Yes | n/a | Yes |
| Text Messaging Templates | Yes | Yes | n/a | Yes |
| Music | ||||
| Headphone Jack (3.5mm) | - | - | - | Yes |
| Music Player | Yes | - | n/a | Yes |
| Productivity | ||||
| Alarm | Yes | Yes | n/a | Yes |
| Calculator | Yes | Yes | n/a | Yes |
| Calendar | Yes | Yes | n/a | Yes |
| To-Do List | - | Yes | n/a | - |
| Voice Memo | Yes | Yes | n/a | Yes |
| Software | ||||
| BREW | Yes | - | n/a | Yes |
| Games | Yes | Yes | n/a | Yes |
| Java (J2ME) | - | Yes | n/a | - |
| Voice | ||||
| Headset Jack (2.5 mm) | Yes | - | n/a | - |
| Push-To-Talk | Yes | - | - | - |
| Speaker Phone | Yes | Yes | - | Yes |
| Casio G'zOne Rock | Samsung SGH-T239 | BlackBerry 7750 | Motorola Rival A455 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Casio G'zOne Rock | Samsung SGH-T239 | BlackBerry 7750 | Motorola Rival A455 |
