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| Phone | Motorola C290 | Pantech Duo C810 | Sony Ericsson Z550a | Motorola T720 / T721 (GSM) |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? |
2.2" diag. 4 : 3 |
1.9" diag. 4 : 3 |
? |
| Display Resolution & Type |
128 x 160 pixels LCD (STN) |
240 x 320 pixels (~182 ppi) LCD (TFT/TFD) |
176 x 220 pixels (~148 ppi) LCD (TFT/TFD) |
120 x 160 pixels LCD (STN) |
| Display Refresh | ? | ? | ? | ? |
| Battery | 1,020 mAh | 1,320 mAh | ? | ? |
| Processor | ? | ARM 920t PXA27x | ? | ? |
| RAM | ? | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | - | 1 megapixel | 1 megapixel | - |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | - | QVGA (320 x 240) | ? | - |
| Front Camera | - | - | - | - |
| Weight |
3.53 oz (100g) |
3.88 oz (110g) |
3.26 oz (92g) |
3.56 oz (101g) |
| Dimensions |
3.43" x 1.91" x 0.93" (87 x 49 x 23.6 mm) |
4.01" x 1.97" x 0.78" (102 x 50 x 19.8 mm) |
3.43" x 1.77" x 0.79" (87 x 45 x 20.1 mm) |
3.5" x 1.87" x 0.83" (89 x 47 x 21.1 mm) |
| Form Factor | Clamshell | Slide | Clamshell | Clamshell |
| Platform / OS | (proprietary) | Windows Mobile Standard | (proprietary) | (proprietary) |
| Network Bands |
CDMA: 850, 1900 AMPS: 850 |
WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 |
GSM: 850, 900, 1800, 1900 |
GSM: 850, 1900 |
| Data Technology | 1xRTT | HSDPA 1.8 | GPRS | GPRS |
| Features | ||||
| GPS / Location | Yes | n/a | - | - |
| Accessibility | ||||
| Hearing Aid Compatible |
Yes M3 (mostly compatible) |
- | - | - |
| Multiple Languages | Yes | n/a | Yes | Yes |
| TTY/TDD (Digital) | Yes | - | Yes | - |
| Alerts | ||||
| Extra Display | - | - | Yes | Yes |
| Ringer Profiles | - | Yes | Yes | - |
| Connectivity | ||||
| Bluetooth | - | Yes | Yes | - |
| USB |
Yes Mini-USB |
Yes | Yes | - |
| Contacts | ||||
| Picture ID | Yes | n/a | Yes | - |
| Ringer ID | Yes | n/a | Yes | Yes |
| Voice Dialing | - | n/a | Yes | Yes |
| Customization | ||||
| Changeable Body Plates | - | - | - | Yes |
| Custom Graphics | - | n/a | Yes | Yes |
| Custom Ringtones | - | n/a | Yes | Yes |
| Real-Music Ringers | Yes | n/a | Yes | - |
| Data & Network | ||||
| Data Tethering | - | n/a | Yes | Yes |
| External Antenna Jack | Yes | n/a | - | - |
| WAP / Web Browser | Yes | n/a | Yes | Yes |
| Input | ||||
| Predictive Text Entry | Yes | n/a | Yes | Yes |
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | Yes | - | - |
| Memory | ||||
| Memory Card Slot | - | Yes | Yes | - |
| Messaging | ||||
| Email Client | - | n/a | Yes | Yes |
| EMS / Picture Messaging | - | n/a | - | Yes |
| Instant Messaging | - | n/a | - | - |
| MMS | - | n/a | Yes | - |
| Text Messaging Templates | Yes | n/a | Yes | Yes |
| Music | ||||
| FM Radio | - | - | Yes | - |
| Music Player | - | n/a | Yes | - |
| Productivity | ||||
| Alarm | Yes | n/a | Yes | Yes |
| Calculator | Yes | n/a | Yes | Yes |
| Calendar | Yes | n/a | Yes | Yes |
| To-Do List | - | n/a | Yes | - |
| Voice Memo | Yes | n/a | Yes | Yes |
| Software | ||||
| Games | Yes | n/a | Yes | Yes |
| Java (J2ME) | Yes | n/a | Yes | Yes |
| Voice | ||||
| Headset Jack (2.5 mm) | Yes | n/a | - | Yes |
| Push-To-Talk | - | - | Yes * | - |
| Speaker Phone | Yes | Yes | Yes | - |
| * Some versions only | ||||
| Motorola C290 | Pantech Duo C810 | Sony Ericsson Z550a | Motorola T720 / T721 (GSM) | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Motorola C290 | Pantech Duo C810 | Sony Ericsson Z550a | Motorola T720 / T721 (GSM) |
