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| Phone | Ericsson R278d | Motorola C290 | Siemens C56 |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size | ? | ? | ? |
| Display Resolution & Type | 101 x 40 pixels |
128 x 160 pixels LCD (STN) |
101 x 64 pixels |
| Display Refresh | ? | ? | ? |
| Battery | ? | 1,020 mAh | 700 mAh |
| Processor | ? | ? | ? |
| RAM | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | - | - | - |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | - | - | - |
| Front Camera | - | - | - |
| Weight |
9.28 oz (263g) |
3.53 oz (100g) |
3 oz (85g) |
| Dimensions |
5.1" x 2" x 1" (130 x 51 x 25.4 mm) |
3.43" x 1.91" x 0.93" (87 x 49 x 23.6 mm) |
3.98" x 1.73" x 0.83" (101 x 44 x 21.1 mm) |
| Form Factor | Slab | Clamshell | Slab |
| Platform / OS | (proprietary) | (proprietary) | (proprietary) |
| Network Bands |
TDMA: 850, 1900 AMPS: 850 |
CDMA: 850, 1900 AMPS: 850 |
GSM: 850, 1900 |
| Data Technology | - | 1xRTT | GPRS |
| Features | |||
| GPS / Location | - | Yes | Yes |
| Accessibility | |||
| Hearing Aid Compatible | - |
Yes M3 (mostly compatible) |
- |
| Multiple Languages | Yes | Yes | Yes |
| TTY/TDD (Digital) | - | Yes | Yes |
| Alerts | |||
| Ringer Profiles | Yes | - | Yes |
| Connectivity | |||
| USB | - |
Yes Mini-USB |
Yes |
| Contacts | |||
| Picture ID | - | Yes | - |
| Ringer ID | - | Yes | Yes |
| Voice Dialing | - | - | Yes |
| Customization | |||
| Changeable Body Plates | - | - | Yes |
| Custom Graphics | - | - | Yes |
| Custom Ringtones | Yes | - | Yes |
| Real-Music Ringers | - | Yes | - |
| Data & Network | |||
| Data Tethering | Yes | - | Yes |
| External Antenna Jack | - | Yes | - |
| WAP / Web Browser | Yes | Yes | Yes |
| Input | |||
| Predictive Text Entry | Yes | Yes | Yes |
| Side Keys | Yes | Yes | - |
| Messaging | |||
| EMS / Picture Messaging | - | - | Yes |
| Text Messaging Templates | - | Yes | Yes |
| Productivity | |||
| Alarm | Yes | Yes | Yes |
| Calculator | - | Yes | Yes |
| Calendar | - | Yes | Yes |
| Voice Memo | - | Yes | - |
| Software | |||
| Games | - | Yes | Yes |
| Java (J2ME) | - | Yes | Yes |
| Voice | |||
| Headset Jack (2.5 mm) | - | Yes | - |
| Speaker Phone | - | Yes | Yes |
| Ericsson R278d | Motorola C290 | Siemens C56 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Ericsson R278d | Motorola C290 | Siemens C56 |
