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| Phone | Motorola Charm | Sony Ericsson Z550a | Siemens C56 | Motorola T730 / T731c |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
2.8" diag. 4 : 3 |
1.9" diag. 4 : 3 |
? | ? |
| Display Resolution & Type |
320 x 240 pixels (~143 ppi) LCD (TFT/TFD) |
176 x 220 pixels (~148 ppi) LCD (TFT/TFD) |
101 x 64 pixels |
120 x 160 pixels LCD (STN) |
| Display Refresh | 60 Hz | ? | ? | ? |
| Battery | 1,170 mAh | ? | 700 mAh | 750 mAh |
| Processor | 720 MHz TI OMAP3410 | ? | ? | ? |
| RAM | ? | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | 3 megapixel | 1 megapixel | - | - |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | ? | ? | - | - |
| Front Camera | - | - | - | - |
| Weight |
3.88 oz (110g) |
3.26 oz (92g) |
3 oz (85g) |
4.06 oz (115g) |
| Dimensions |
3.87" x 2.65" x 0.45" (98 x 67 x 11.4 mm) |
3.43" x 1.77" x 0.79" (87 x 45 x 20.1 mm) |
3.98" x 1.73" x 0.83" (101 x 44 x 21.1 mm) |
3.54" x 1.87" x 0.91" (90 x 47 x 23.1 mm) |
| Form Factor | Slab | Clamshell | Slab | Clamshell |
| Platform / OS | Android | (proprietary) | (proprietary) | (proprietary) |
| Network Bands |
GSM: 850, 900, 1800, 1900 |
GSM: 850, 1900 |
CDMA: 850, 1900 AMPS: 850 |
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| Data Technology | HSDPA 3.6 | GPRS | GPRS | 1xRTT |
| Features | ||||
| GPS / Location | n/a | - | Yes | Yes |
| Accessibility | ||||
| Multiple Languages | n/a | Yes | Yes | Yes |
| TTY/TDD (Digital) | Yes | Yes | Yes | Yes |
| Alerts | ||||
| Extra Display | - | Yes | - | Yes |
| Ringer Profiles | - | Yes | Yes | - |
| Connectivity | ||||
| Bluetooth | Yes | Yes | - | - |
| USB |
Yes Micro-USB |
Yes | Yes | Yes |
| Wi-Fi |
Yes 4 (802.11 b,g,n) |
- | - | - |
| Contacts | ||||
| Picture ID | n/a | Yes | - | - |
| Ringer ID | n/a | Yes | Yes | Yes |
| Voice Dialing | n/a | Yes | Yes | Yes |
| Customization | ||||
| Changeable Body Plates | - | - | Yes | Yes |
| Custom Graphics | n/a | Yes | Yes | Yes |
| Custom Ringtones | n/a | Yes | Yes | Yes |
| Real-Music Ringers | n/a | Yes | - | - |
| Data & Network | ||||
| Data Tethering | n/a | Yes | Yes | Yes |
| WAP / Web Browser | n/a | Yes | Yes | Yes |
| Input | ||||
| Predictive Text Entry | n/a | Yes | Yes | Yes |
| Side Keys | Yes | Yes | - | Yes |
| Text Keyboard, Hardware | Yes | - | - | - |
| Touch Screen |
Yes Capacitive |
- | - | - |
| Memory | ||||
| Memory Card Slot | Yes | Yes | - | - |
| Messaging | ||||
| Email Client | n/a | Yes | - | Yes |
| EMS / Picture Messaging | n/a | - | Yes | Yes |
| Instant Messaging | n/a | - | - | - |
| MMS | n/a | Yes | - | - |
| Text Messaging Templates | n/a | Yes | Yes | Yes |
| Music | ||||
| FM Radio | - | Yes | - | - |
| Headphone Jack (3.5mm) | Yes | - | - | - |
| Music Player | n/a | Yes | - | - |
| Productivity | ||||
| Alarm | n/a | Yes | Yes | Yes |
| Calculator | n/a | Yes | Yes | Yes |
| Calendar | n/a | Yes | Yes | Yes |
| To-Do List | n/a | Yes | - | - |
| Voice Memo | n/a | Yes | - | Yes |
| Software | ||||
| BREW | n/a | - | - | Yes * |
| Games | n/a | Yes | Yes | Yes |
| Java (J2ME) | n/a | Yes | Yes | - |
| Voice | ||||
| Headset Jack (2.5 mm) | n/a | - | - | Yes |
| Push-To-Talk | - | Yes * | - | - |
| Speaker Phone | Yes | Yes | Yes | - |
| * Some versions only | ||||
| Motorola Charm | Sony Ericsson Z550a | Siemens C56 | Motorola T730 / T731c | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Motorola Charm | Sony Ericsson Z550a | Siemens C56 | Motorola T730 / T731c |
