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| Phone | Siemens SL55 | Samsung SGH-D307 | Casio G'zOne Rock | Samsung SGH-A127 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? | ? |
2.1" diag. 4 : 3 |
? |
| Display Resolution & Type |
101 x 80 pixels LCD (STN) |
176 x 220 pixels LCD (TFT/TFD) |
240 x 320 pixels (~190 ppi) LCD (TFT/TFD) |
128 x 160 pixels LCD (STN) |
| Display Refresh | ? | ? | ? | ? |
| Battery | 500 mAh | ? | 1,150 mAh | 800 mAh |
| Processor | ? | ? | ? | ? |
| RAM | ? | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | - | - | 2 megapixel | Yes |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | - | - | ? | - |
| Front Camera | - | - | - | - |
| Weight |
2.79 oz (79g) |
4.3 oz (122g) |
4.4 oz (125g) |
2.86 oz (81g) |
| Dimensions |
3.21" x 1.75" x 0.86" (82 x 44 x 21.8 mm) |
3.7" x 1.9" x 0.85" (94 x 48 x 21.6 mm) |
4.1" x 2" x 0.9" (104 x 51 x 22.9 mm) |
3.39" x 1.67" x 0.76" (86 x 42 x 19.3 mm) |
| Form Factor | Slide | Clamshell | Clamshell | Clamshell |
| Platform / OS | (proprietary) | (proprietary) | (proprietary) | (proprietary) |
| Network Bands |
GSM: 900, 1800, 1900 |
GSM: 850, 1800, 1900 |
CDMA: 850, 1900 |
GSM: 850, 1900 |
| Data Technology | GPRS | EDGE | EVDO rA | GPRS |
| Features | ||||
| Flashlight | - | - | Yes | - |
| GPS / Location | - | - | Yes | - |
| Ruggedized | - | - | Yes | - |
| Water-Resistant | - | - | Yes | - |
| Accessibility | ||||
| Hearing Aid Compatible | - |
Yes M4 (very compatible) |
Yes M4, T4 (very tele-coil compatible) |
- |
| Multiple Languages | Yes | Yes | Yes | Yes |
| TTY/TDD (Digital) | - | Yes | Yes | Yes |
| Alerts | ||||
| Extra Display | - | Yes | Yes | Yes |
| Ringer Profiles | Yes | - | - | - |
| Connectivity | ||||
| Bluetooth | - | Yes | Yes | - |
| Infrared (IR) | Yes | - | - | - |
| USB | - | Yes | Yes | - |
| Contacts | ||||
| Picture ID | Yes | Yes | Yes | - |
| Ringer ID | Yes | Yes | Yes | Yes |
| Voice Dialing | Yes | Yes | Yes | - |
| Customization | ||||
| Custom Graphics | Yes | Yes | Yes | Yes |
| Custom Ringtones | Yes | Yes | Yes | Yes |
| Real-Music Ringers | - | Yes | Yes | - |
| Data & Network | ||||
| Data Tethering | Yes | Yes | Yes | - |
| WAP / Web Browser | Yes | Yes | Yes | Yes |
| Input | ||||
| Predictive Text Entry | Yes | Yes | Yes | Yes |
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | Yes | - | - |
| Memory | ||||
| Memory Card Slot | - | - | Yes | - |
| Messaging | ||||
| Email Client | Yes | Yes | Yes | - |
| EMS / Picture Messaging | Yes | Yes | - | - |
| Instant Messaging | - | - | Yes | - |
| MMS | Yes | Yes | Yes | Yes |
| Text Messaging Templates | Yes | Yes | Yes | Yes |
| Music | ||||
| Music Player | - | - | Yes | - |
| Productivity | ||||
| Alarm | Yes | Yes | Yes | Yes |
| Calculator | Yes | Yes | Yes | Yes |
| Calendar | Yes | Yes | Yes | Yes |
| To-Do List | Yes | Yes | - | Yes |
| Voice Memo | Yes | Yes | Yes | Yes |
| Software | ||||
| BREW | - | - | Yes | - |
| Games | Yes | Yes | Yes | Yes |
| Java (J2ME) | Yes | Yes | - | Yes |
| Voice | ||||
| Headset Jack (2.5 mm) | - | - | Yes | - |
| Push-To-Talk | - | - | Yes | - |
| Speaker Phone | Yes | Yes | Yes | Yes |
| Siemens SL55 | Samsung SGH-D307 | Casio G'zOne Rock | Samsung SGH-A127 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Siemens SL55 | Samsung SGH-D307 | Casio G'zOne Rock | Samsung SGH-A127 |
