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| Phone | Siemens CT66 / C66 / C65 / C71 / C70 | Motorola T720 / T721 (GSM) | Nokia 6555 |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size | ? | ? |
2" diag. 4 : 3 |
| Display Resolution & Type |
130 x 130 pixels LCD (Color) |
120 x 160 pixels LCD (STN) |
240 x 320 pixels (~200 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? |
| Battery | 600 mAh | ? | 1,020 mAh |
| Processor | ? | ? | ? |
| RAM | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | Yes | - | 1 megapixel |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | - | - | QCIF (176 x 144) |
| Front Camera | - | - | - |
| Weight |
3 oz (85g) |
3.56 oz (101g) |
3.42 oz (97g) |
| Dimensions |
4.1" x 1.8" x 0.7" (104 x 46 x 17.8 mm) |
3.5" x 1.87" x 0.83" (89 x 47 x 21.1 mm) |
3.92" x 1.74" x 0.77" (100 x 44 x 19.6 mm) |
| Form Factor | Slab | Clamshell | Clamshell |
| Platform / OS | (proprietary) | (proprietary) | (proprietary) |
| Network Bands |
GSM: 850, 1800, 1900 |
GSM: 850, 1900 |
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| Data Technology | GPRS | GPRS | WCDMA (UMTS) |
| Features | |||
| Accessibility | |||
| Adjustable Text Size | - | - | Yes |
| Hearing Aid Compatible | - | - |
Yes M3, T3 (mostly tele-coil compatible) |
| Multiple Languages | Yes | Yes | Yes |
| TTY/TDD (Digital) | - | - | Yes |
| Alerts | |||
| Extra Display | - | Yes | Yes |
| Ringer Profiles | Yes | - | Yes |
| Connectivity | |||
| Bluetooth | - | - | Yes |
| Infrared (IR) | Yes | - | - |
| USB | Yes | - |
Yes Micro-USB |
| Contacts | |||
| Picture ID | Yes | - | Yes |
| Ringer ID | Yes | Yes | Yes |
| Voice Dialing | - | Yes | Yes |
| Customization | |||
| Changeable Body Plates | Yes | Yes | - |
| Custom Graphics | Yes | Yes | Yes |
| Custom Ringtones | Yes | Yes | Yes |
| Real-Music Ringers | - | - | Yes |
| Data & Network | |||
| Data Tethering | - | Yes | Yes |
| WAP / Web Browser | Yes | Yes | Yes |
| Input | |||
| Predictive Text Entry | Yes | Yes | Yes |
| Side Keys | - | Yes | Yes |
| Memory | |||
| Memory Card Slot | - | - | Yes |
| Messaging | |||
| Email Client | - | Yes | Yes |
| EMS / Picture Messaging | Yes | Yes | - |
| Instant Messaging | - | - | Yes |
| MMS | Yes | - | Yes |
| Text Messaging Templates | Yes | Yes | Yes |
| Music | |||
| Music Player | - | - | Yes |
| Productivity | |||
| Alarm | Yes | Yes | Yes |
| Calculator | Yes | Yes | Yes |
| Calendar | Yes | Yes | Yes |
| To-Do List | Yes | - | Yes |
| Voice Memo | Yes | Yes | Yes |
| Software | |||
| Games | Yes | Yes | Yes |
| Java (J2ME) | Yes | Yes | Yes |
| Voice | |||
| Call Screening | Yes | - | - |
| Headset Jack (2.5 mm) | - | Yes | Yes |
| Push-To-Talk | Yes * | - | Yes * |
| Speaker Phone | Yes | - | Yes |
| * Some versions only | |||
| Siemens CT66 / C66 / C65 / C71 / C70 | Motorola T720 / T721 (GSM) | Nokia 6555 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Siemens CT66 / C66 / C65 / C71 / C70 | Motorola T720 / T721 (GSM) | Nokia 6555 |
