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| Phone | Pantech Duo C810 | Samsung UpStage M620 | ZTE Aspect | Siemens CT66 / C66 / C65 / C71 / C70 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
2.2" diag. 4 : 3 |
2.1" diag. 4 : 3 |
2.4" diag. 4 : 3 |
? |
| Display Resolution & Type |
240 x 320 pixels (~182 ppi) LCD (TFT/TFD) |
176 x 220 pixels (~134 ppi) LCD (TFT/TFD) |
320 x 240 pixels (~167 ppi) LCD (TFT/TFD) |
130 x 130 pixels LCD (Color) |
| Display Refresh | ? | ? | ? | ? |
| Battery | 1,320 mAh | 620 mAh | 1,000 mAh | 600 mAh |
| Processor | ARM 920t PXA27x | ? | 230 MHz Qualcomm QSC6270 | ? |
| RAM | ? | ? | 128 MB | ? |
| Storage | ? raw hardware | ? raw hardware | 256 MB | ? raw hardware |
| Main Camera | 1 megapixel | 1 megapixel | 2 megapixel | Yes |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | QVGA (320 x 240) | ? | QVGA (320 x 240) | - |
| Front Camera | - | - | - | - |
| Weight |
3.88 oz (110g) |
2.57 oz (73g) |
3.7 oz (105g) |
3 oz (85g) |
| Dimensions |
4.01" x 1.97" x 0.78" (102 x 50 x 19.8 mm) |
4.07" x 1.73" x 0.37" (103 x 44 x 9.4 mm) |
4.55" x 2.4" x 0.45" (116 x 61 x 11.4 mm) |
4.1" x 1.8" x 0.7" (104 x 46 x 17.8 mm) |
| Form Factor | Slide | Slab | Slab | Slab |
| Platform / OS | Windows Mobile Standard | (proprietary) | (proprietary) | (proprietary) |
| Network Bands |
WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 |
WCDMA: 2, 4 GSM: 850, 900, 1800, 1900 |
GSM: 850, 1800, 1900 |
| Data Technology | HSDPA 1.8 | EVDO r0 | WCDMA (UMTS) | GPRS |
| Features | ||||
| GPS / Location | n/a | - | Yes | - |
| Accessibility | ||||
| Adjustable Text Size | n/a | Yes | - | - |
| Hearing Aid Compatible | - |
Yes M4 (very compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
- |
| Multiple Languages | n/a | - | Yes | Yes |
| TTY/TDD (Digital) | - | Yes | Yes | - |
| Alerts | ||||
| Extra Display | - | Yes | - | - |
| Ringer Profiles | Yes | - | Yes | Yes |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | - |
| Infrared (IR) | - | - | - | Yes |
| USB | Yes | Yes |
Yes Micro-USB |
Yes |
| Contacts | ||||
| Picture ID | n/a | Yes | Yes | Yes |
| Ringer ID | n/a | Yes | Yes | Yes |
| Voice Dialing | n/a | Yes | - | - |
| Customization | ||||
| Changeable Body Plates | - | - | - | Yes |
| Custom Graphics | n/a | Yes | Yes | Yes |
| Custom Ringtones | n/a | Yes | Yes | Yes |
| Real-Music Ringers | n/a | Yes | Yes | - |
| Data & Network | ||||
| Data Tethering | n/a | - | - | - |
| External Antenna Jack | n/a | 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 | - | Yes | - |
| Memory | ||||
| Memory Card Slot | Yes | Yes | Yes | - |
| Messaging | ||||
| Email Client | n/a | - | Yes | - |
| EMS / Picture Messaging | n/a | - | - | Yes |
| Instant Messaging | n/a | Yes | - | - |
| MMS | n/a | Yes | Yes | Yes |
| Text Messaging Templates | n/a | Yes | Yes | Yes |
| Music | ||||
| Headphone Jack (3.5mm) | - | - | Yes | - |
| Music Player | n/a | Yes | 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 | - | Yes |
| Voice Memo | n/a | Yes | Yes | Yes |
| Software | ||||
| Games | n/a | Yes | Yes | Yes |
| Java (J2ME) | n/a | Yes | Yes | Yes |
| Voice | ||||
| Call Screening | - | - | - | Yes |
| Push-To-Talk | - | - | - | Yes * |
| Speaker Phone | Yes | Yes | Yes | Yes |
| * Some versions only | ||||
| Pantech Duo C810 | Samsung UpStage M620 | ZTE Aspect | Siemens CT66 / C66 / C65 / C71 / C70 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Pantech Duo C810 | Samsung UpStage M620 | ZTE Aspect | Siemens CT66 / C66 / C65 / C71 / C70 |
