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| Phone | Casio Exilim C721 | HTC G2 | Samsung SGH-X640 | Samsung Impression SGH-A877 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
2.3" diag. 4 : 3 |
3.7" diag. 5 : 3 |
? |
3.2" diag. 5 : 3 |
| Display Resolution & Type |
240 x 320 pixels (~174 ppi) LCD (TFT/TFD) |
480 x 800 pixels (~252 ppi) LCD (TFT/TFD) |
128 x 160 pixels LCD (TFT/TFD) |
240 x 400 pixels (~146 ppi) AMOLED |
| Display Refresh | ? | 60 Hz | ? | ? |
| Battery | 920 mAh | 1,300 mAh | 800 mAh | 1,000 mAh |
| Processor | ? | 800 MHz Qualcomm S2 MSM7230 | ? | ? |
| RAM | ? | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | 5 megapixel | 5 megapixel | Yes | 3 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | QVGA (320 x 240) | 720p HD | - | QVGA (320 x 240) |
| Front Camera | - | - | - | - |
| Weight |
4.48 oz (127g) |
6.5 oz (184g) |
3 oz (85g) |
5.2 oz (147g) |
| Dimensions |
4.06" x 1.97" x 0.78" (103 x 50 x 19.9 mm) |
4.68" x 2.37" x 0.55" (119 x 60 x 14 mm) |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
4.48" x 2.28" x 0.64" (114 x 58 x 16.3 mm) |
| Form Factor | Clamshell | Slab | Clamshell | Slab |
| Platform / OS | (proprietary) | Android | (proprietary) | (proprietary) |
| Network Bands |
CDMA: 850, 1900 |
WCDMA: 1, 4 GSM: 850, 900, 1800, 1900 |
GSM: 900, 1800, 1900 |
WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 |
| Data Technology | EVDO rA | HSPA 14.4 | GPRS | HSDPA 3.6 |
| Features | ||||
| Flashlight | Yes | - | - | - |
| GPS / Location | Yes | n/a | - | Yes |
| Ruggedized | Yes | - | - | - |
| Water-Resistant | Yes | - | - | - |
| Accessibility | ||||
| Adjustable Text Size | Yes | n/a | - | - |
| Hearing Aid Compatible | Yes | Yes | - | Yes |
| Multiple Languages | Yes | n/a | Yes | Yes |
| TTY/TDD (Digital) | Yes | - | - | - |
| Alerts | ||||
| Extra Display | Yes | - | - | - |
| Ringer Profiles | - | - | - | Yes |
| Connectivity | ||||
| Bluetooth | Yes | Yes | - | Yes |
| Mobile Hotspot | - | n/a | - | - |
| USB | Yes | Yes | - | Yes |
| Wi-Fi | - |
Yes 4 (802.11 b,g,n) |
- | - |
| Contacts | ||||
| Picture ID | Yes | n/a | Yes | Yes |
| Ringer ID | Yes | n/a | Yes | Yes |
| Voice Dialing | Yes | n/a | - | - |
| Customization | ||||
| Custom Graphics | Yes | n/a | Yes | Yes |
| Custom Ringtones | Yes | n/a | Yes | Yes |
| Real-Music Ringers | Yes | n/a | - | 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 | Yes |
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | Yes | - | Yes |
| Touch Screen | - | Yes | - | Yes |
| Memory | ||||
| Memory Card Slot | Yes | Yes | - | Yes |
| Messaging | ||||
| Email Client | - | n/a | - | 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 | ||||
| Headphone Jack (3.5mm) | - | Yes | - | - |
| Music Player | Yes | n/a | - | Yes |
| Productivity | ||||
| Alarm | Yes | n/a | Yes | Yes |
| Calculator | Yes | n/a | Yes | Yes |
| Calendar | Yes | n/a | Yes | Yes |
| To-Do List | Yes | n/a | Yes | Yes |
| Voice Memo | Yes | n/a | Yes | Yes |
| Software | ||||
| BREW | Yes | n/a | - | - |
| Games | Yes | n/a | Yes | Yes |
| Java (J2ME) | - | n/a | Yes | Yes |
| Voice | ||||
| Headset Jack (2.5 mm) | - | n/a | Yes | - |
| Speaker Phone | Yes | Yes | Yes | Yes |
| Casio Exilim C721 | HTC G2 | Samsung SGH-X640 | Samsung Impression SGH-A877 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Casio Exilim C721 | HTC G2 | Samsung SGH-X640 | Samsung Impression SGH-A877 |
