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| Phone | Samsung SGH-A657 | Sony Ericsson T237 / T290a | Pantech Duo C810 | Samsung SGH-D307 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? | ? |
2.2" diag. 4 : 3 |
? |
| Display Resolution & Type |
176 x 220 pixels LCD (TFT/TFD) |
101 x 80 pixels LCD (STN) |
240 x 320 pixels (~182 ppi) LCD (TFT/TFD) |
176 x 220 pixels LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? | ? |
| Battery | 1,420 mAh | ? | 1,320 mAh | ? |
| Processor | ? | ? | ARM 920t PXA27x | ? |
| RAM | ? | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | - | - | 1 megapixel | - |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | - | - | QVGA (320 x 240) | - |
| Front Camera | - | - | - | - |
| Weight |
4.34 oz (123g) |
2.79 oz (79g) |
3.88 oz (110g) |
4.3 oz (122g) |
| Dimensions |
4.53" x 2.05" x 0.77" (115 x 52 x 19.6 mm) |
4" x 1.71" x 0.71" (102 x 43 x 18 mm) |
4.01" x 1.97" x 0.78" (102 x 50 x 19.8 mm) |
3.7" x 1.9" x 0.85" (94 x 48 x 21.6 mm) |
| Form Factor | Slab | Slab | Slide | Clamshell |
| Platform / OS | (proprietary) | (proprietary) | Windows Mobile Standard | (proprietary) |
| Network Bands |
WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 |
GSM: 850, 1900 |
WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 |
GSM: 850, 1800, 1900 |
| Data Technology | HSDPA 3.6 | GPRS | HSDPA 1.8 | EDGE |
| Features | ||||
| Flashlight | Yes | - | - | - |
| GPS / Location | Yes | - | n/a | - |
| Ruggedized | Yes | - | - | - |
| Accessibility | ||||
| Hearing Aid Compatible | - | - | - |
Yes M4 (very compatible) |
| Multiple Languages | Yes | Yes | n/a | Yes |
| TTY/TDD (Digital) | Yes | Yes | - | Yes |
| Alerts | ||||
| Extra Display | - | - | - | Yes |
| Ringer Profiles | - | - | Yes | - |
| Connectivity | ||||
| Bluetooth | Yes | - | Yes | Yes |
| USB | Yes | Yes | Yes | Yes |
| Contacts | ||||
| Picture ID | Yes | Yes | n/a | Yes |
| Ringer ID | Yes | Yes | n/a | Yes |
| Voice Dialing | - | Yes | n/a | Yes |
| Customization | ||||
| Custom Graphics | Yes | Yes | n/a | Yes |
| Custom Ringtones | Yes | Yes | n/a | Yes |
| Real-Music Ringers | Yes | - | n/a | Yes |
| Data & Network | ||||
| Data Tethering | Yes | - | n/a | Yes |
| WAP / Web Browser | Yes | Yes | n/a | Yes |
| Input | ||||
| Predictive Text Entry | Yes | Yes | n/a | Yes |
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | - | Yes | Yes |
| Memory | ||||
| Memory Card Slot | Yes | - | Yes | - |
| Messaging | ||||
| Email Client | Yes | Yes | n/a | Yes |
| EMS / Picture Messaging | - | Yes | n/a | Yes |
| Instant Messaging | Yes | - | n/a | - |
| MMS | Yes | Yes | n/a | Yes |
| Text Messaging Templates | Yes | Yes | n/a | Yes |
| Music | ||||
| Music Player | Yes | - | n/a | - |
| Productivity | ||||
| Alarm | Yes | Yes | n/a | Yes |
| Calculator | Yes | Yes | n/a | Yes |
| Calendar | Yes | Yes | n/a | Yes |
| To-Do List | Yes | - | n/a | Yes |
| Voice Memo | Yes | Yes | n/a | Yes |
| Software | ||||
| Games | Yes | Yes | n/a | Yes |
| Java (J2ME) | Yes | - | n/a | Yes |
| Voice | ||||
| Push-To-Talk | Yes | - | - | - |
| Speaker Phone | Yes | Yes | Yes | Yes |
| Samsung SGH-A657 | Sony Ericsson T237 / T290a | Pantech Duo C810 | Samsung SGH-D307 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-A657 | Sony Ericsson T237 / T290a | Pantech Duo C810 | Samsung SGH-D307 |
