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| Phone | Ericsson R520 | Nokia 6255i / 6256i | Casio G'zOne Boulder | Palm Treo 600 (CDMA) |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? | ? |
2" diag. 4 : 3 |
? |
| Display Resolution & Type | ? |
128 x 160 pixels LCD (TFT/TFD) |
240 x 320 pixels (~200 ppi) LCD (TFT/TFD) |
160 x 160 pixels LCD (Color) |
| Display Refresh | ? | ? | ? | ? |
| Battery | ? | 1,070 mAh | 810 mAh | ? |
| Processor | ? | ? | ? | ? |
| RAM | ? | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | - | Yes | 1 megapixel | Yes |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | - | ? | ? | - |
| Front Camera | - | - | - | - |
| Weight |
4.23 oz (120g) |
4.23 oz (120g) |
4.9 oz (139g) |
6.2 oz (176g) |
| Dimensions |
5.12" x 1.97" x 0.63" (130 x 50 x 16 mm) |
3.36" x 1.87" x 0.97" (85 x 47 x 24.6 mm) |
3.9" x 2" x 0.9" (99 x 51 x 22.9 mm) |
4.41" x 2.36" x 0.87" (112 x 60 x 22.1 mm) |
| Form Factor | Slab | Clamshell | Clamshell | Slab |
| Platform / OS | (proprietary) | (proprietary) | (proprietary) | Palm OS |
| Network Bands |
GSM: 900, 1800, 1900 |
CDMA: 850, 1900 AMPS: 850 |
CDMA: 850, 1900 |
CDMA: 850, 1900 |
| Data Technology | GPRS | 1xRTT | EVDO rA | 1xRTT |
| Features | ||||
| Flashlight | - | - | Yes | - |
| GPS / Location | - | Yes | Yes | n/a |
| 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 | n/a |
| TTY/TDD (Digital) | - | Yes | Yes | Yes |
| Alerts | ||||
| Extra Display | - | Yes | Yes | - |
| Ringer Profiles | Yes | Yes | - | - |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | - |
| Infrared (IR) | Yes | Yes | - | Yes |
| USB | - | Yes | Yes | Yes |
| Contacts | ||||
| Picture ID | - | Yes | Yes | n/a |
| Ringer ID | - | Yes | Yes | n/a |
| Voice Dialing | Yes | Yes | Yes | n/a |
| Customization | ||||
| Changeable Body Plates | - | - | Yes | - |
| Custom Graphics | - | Yes | Yes | n/a |
| Custom Ringtones | Yes | Yes | Yes | n/a |
| Real-Music Ringers | - | Yes | - | n/a |
| Data & Network | ||||
| Data Tethering | Yes | Yes | Yes | n/a |
| WAP / Web Browser | Yes | Yes | Yes | n/a |
| Input | ||||
| Predictive Text Entry | Yes | Yes | Yes | n/a |
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | - | - | Yes |
| Touch Screen | - | - | - | Yes |
| Memory | ||||
| Memory Card Slot | - | Yes | Yes | Yes |
| Messaging | ||||
| Email Client | - | Yes | - | n/a |
| EMS / Picture Messaging | - | Yes * | Yes | n/a |
| MMS | - | Yes | Yes | n/a |
| Text Messaging Templates | Yes | Yes | Yes | n/a |
| Music | ||||
| FM Radio | - | Yes | - | - |
| Music Player | - | Yes * | Yes | n/a |
| Productivity | ||||
| Alarm | Yes | Yes | Yes | n/a |
| Calculator | Yes | Yes | Yes | n/a |
| Calendar | Yes | Yes | Yes | n/a |
| To-Do List | - | Yes | - | n/a |
| Voice Memo | Yes | Yes | Yes | n/a |
| Software | ||||
| BREW | - | Yes * | Yes | n/a |
| Games | Yes | Yes | Yes | n/a |
| Java (J2ME) | - | Yes * | - | n/a |
| Voice | ||||
| Headset Jack (2.5 mm) | - | Yes | - | n/a |
| Push-To-Talk | - | - | Yes | - |
| Speaker Phone | Yes | Yes | Yes | Yes |
| * Some versions only | ||||
| Ericsson R520 | Nokia 6255i / 6256i | Casio G'zOne Boulder | Palm Treo 600 (CDMA) | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Ericsson R520 | Nokia 6255i / 6256i | Casio G'zOne Boulder | Palm Treo 600 (CDMA) |
