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| Phone | Motorola T730 / T731c | Ericsson R278d | Sony Ericsson K850 |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size | ? | ? |
2.2" diag. 4 : 3 |
| Display Resolution & Type |
120 x 160 pixels LCD (STN) |
101 x 40 pixels |
240 x 320 pixels (~182 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? |
| Battery | 750 mAh | ? | ? |
| Processor | ? | ? | ? |
| RAM | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | - | - | 5 megapixel |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | - | - | ? |
| Front Camera | - | - | - |
| Weight |
4.06 oz (115g) |
9.28 oz (263g) |
4.2 oz (119g) |
| Dimensions |
3.54" x 1.87" x 0.91" (90 x 47 x 23.1 mm) |
5.1" x 2" x 1" (130 x 51 x 25.4 mm) |
4" x 1.9" x 0.7" (102 x 48 x 17.8 mm) |
| Form Factor | Clamshell | Slab | Slab |
| Platform / OS | (proprietary) | (proprietary) | (proprietary) |
| Network Bands |
CDMA: 850, 1900 AMPS: 850 |
TDMA: 850, 1900 AMPS: 850 |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
| Data Technology | 1xRTT | - | HSDPA 3.6 |
| Features | |||
| GPS / Location | Yes | - | - |
| Accessibility | |||
| Multiple Languages | Yes | Yes | Yes |
| TTY/TDD (Digital) | Yes | - | Yes |
| Alerts | |||
| Extra Display | Yes | - | - |
| Ringer Profiles | - | Yes | Yes |
| Connectivity | |||
| Bluetooth | - | - | Yes |
| USB | Yes | - | Yes |
| Contacts | |||
| Picture ID | - | - | Yes |
| Ringer ID | Yes | - | Yes |
| Voice Dialing | Yes | - | Yes |
| Customization | |||
| Changeable Body Plates | Yes | - | - |
| Custom Graphics | Yes | - | Yes |
| Custom Ringtones | Yes | Yes | Yes |
| Real-Music Ringers | - | - | Yes |
| Data & Network | |||
| Data Tethering | Yes | Yes | Yes |
| WAP / Web Browser | Yes | Yes | Yes |
| Input | |||
| Predictive Text Entry | Yes | Yes | Yes |
| Side Keys | Yes | Yes | Yes |
| Memory | |||
| Memory Card Slot | - | - | Yes |
| Messaging | |||
| Email Client | Yes | - | Yes |
| EMS / Picture Messaging | Yes | - | - |
| MMS | - | - | Yes |
| Text Messaging Templates | Yes | - | Yes |
| Music | |||
| FM Radio | - | - | Yes |
| Music Player | - | - | Yes |
| Photo & Video | |||
| Video Calling | - | - | Yes * |
| Productivity | |||
| Alarm | Yes | Yes | Yes |
| Calculator | Yes | - | Yes |
| Calendar | Yes | - | Yes |
| To-Do List | - | - | Yes |
| Voice Memo | Yes | - | Yes |
| Software | |||
| BREW | Yes * | - | - |
| Games | Yes | - | Yes |
| Java (J2ME) | - | - | Yes |
| Voice | |||
| Headset Jack (2.5 mm) | Yes | - | - |
| Speaker Phone | - | - | Yes |
| * Some versions only | |||
| Motorola T730 / T731c | Ericsson R278d | Sony Ericsson K850 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Motorola T730 / T731c | Ericsson R278d | Sony Ericsson K850 |
