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| Phone | Casio Exilim C721 | Nokia N91 | Motorola PEBL U6 | Sharp Sidekick LX 2007 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
2.3" diag. 4 : 3 |
? | ? |
3" diag. 5 : 3 |
| Display Resolution & Type |
240 x 320 pixels (~174 ppi) LCD (TFT/TFD) |
176 x 208 pixels LCD (TFT/TFD) |
176 x 220 pixels LCD (TFT/TFD) |
400 x 240 pixels (~155 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? | ? |
| Battery | 920 mAh | ? | 740 mAh | 1,540 mAh |
| Processor | ? | ? | ? | 200 MHz OMAP 331 |
| RAM | ? | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | 5 megapixel | 2 megapixel | Yes | 1 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | QVGA (320 x 240) | ? | ? | ? |
| Front Camera | - | - | - | - |
| Weight |
4.48 oz (127g) |
5.78 oz (164g) |
3.88 oz (110g) |
5.7 oz (162g) |
| Dimensions |
4.06" x 1.97" x 0.78" (103 x 50 x 19.9 mm) |
4.45" x 2.17" x 0.87" (113 x 55 x 22.1 mm) |
1.93" x 3.41" x 0.79" (49 x 87 x 20.1 mm) |
5.12" x 2.36" x 0.7" (130 x 60 x 17.9 mm) |
| Form Factor | Clamshell | Slide | Clamshell | Swivel |
| Platform / OS | (proprietary) | S60 (Symbian) | (proprietary) | (proprietary) |
| Network Bands |
CDMA: 850, 1900 |
WCDMA: 1 GSM: 900, 1800, 1900 |
GSM: 850, 900, 1800, 1900 |
GSM: 850, 900, 1800, 1900 |
| Data Technology | EVDO rA | EDGE | GPRS | EDGE |
| Features | ||||
| Flashlight | Yes | - | - | Yes |
| GPS / Location | Yes | n/a | - | - |
| Ruggedized | Yes | - | - | - |
| Water-Resistant | Yes | - | - | - |
| Accessibility | ||||
| Adjustable Text Size | Yes | n/a | - | Yes |
| Hearing Aid Compatible | Yes | - | - | Yes |
| Multiple Languages | Yes | n/a | Yes | - |
| TTY/TDD (Digital) | Yes | - | Yes | - |
| Alerts | ||||
| Extra Display | Yes | - | Yes | - |
| Ringer Profiles | - | Yes | Yes | Yes |
| Connectivity | ||||
| Bluetooth |
Yes Classic Audio |
Yes Classic Audio |
Yes Classic Audio |
Yes Classic Audio |
| USB | Yes |
Yes Mini-USB |
Yes Mini-USB |
Yes |
| Wi-Fi | - |
Yes 802.11 b,g |
- | - |
| Contacts | ||||
| Picture ID | Yes | n/a | Yes | Yes |
| Ringer ID | Yes | n/a | Yes | Yes |
| Voice Dialing | Yes | n/a | Yes | - |
| Customization | ||||
| Custom Graphics | Yes | n/a | Yes | Yes |
| Custom Ringtones | Yes | n/a | Yes | Yes |
| Real-Music Ringers | Yes | n/a | Yes | Yes |
| Data & Network | ||||
| Data Tethering | Yes | n/a | Yes | - |
| WAP / Web Browser | Yes | n/a | Yes | Yes |
| Input | ||||
| Predictive Text Entry | Yes | n/a | 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 | Yes | n/a | Yes | - |
| Instant Messaging | Yes | n/a | - | Yes |
| MMS | Yes | n/a | Yes | Yes |
| Text Messaging Templates | Yes | n/a | Yes | Yes |
| Music | ||||
| FM Radio | - | Yes | - | - |
| Headphone Jack (3.5mm) | - | Yes | - | Yes |
| Music Player | Yes | n/a | - | Yes |
| Productivity | ||||
| Alarm | Yes | n/a | Yes | Yes * |
| Calculator | Yes | n/a | Yes | - |
| Calendar | Yes | n/a | Yes | Yes |
| To-Do List | Yes | n/a | - | Yes |
| Voice Memo | Yes | n/a | Yes | - |
| Software | ||||
| BREW | Yes | n/a | - | - |
| Games | Yes | n/a | Yes | Yes |
| Java (J2ME) | - | n/a | Yes | Yes |
| Voice | ||||
| Push-To-Talk | - | Yes * | - | - |
| Speaker Phone | Yes | Yes | Yes | Yes |
| * Some versions only | ||||
| Casio Exilim C721 | Nokia N91 | Motorola PEBL U6 | Sharp Sidekick LX 2007 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Casio Exilim C721 | Nokia N91 | Motorola PEBL U6 | Sharp Sidekick LX 2007 |
