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| Phone | Casio Exilim C721 | Sony Xperia S | Nokia N81 | Ericsson R278d |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
2.3" diag. 4 : 3 |
4.3" diag. 16 : 9 |
2.4" diag. 4 : 3 |
? |
| Display Resolution & Type |
240 x 320 pixels (~174 ppi) LCD (TFT/TFD) |
720 x 1280 pixels (~342 ppi) LCD (TFT/TFD) |
240 x 320 pixels (~167 ppi) LCD (TFT/TFD) |
101 x 40 pixels |
| Display Refresh | ? | 60 Hz | ? | ? |
| Battery | 920 mAh | 1,750 mAh | 1,050 mAh | ? |
| Processor | ? | 1.5 GHz Qualcomm Snapdragon S3 MSM8260 | 369 MHz ARM 11 | ? |
| RAM | ? | 1 GB | ? | ? |
| Storage | ? raw hardware | 32 GB | 8 GB * | ? raw hardware |
| Main Camera | 5 megapixel | 12 megapixel | 2 megapixel | - |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | QVGA (320 x 240) | 1080p HD | VGA (640 x 480) | - |
| Front Camera | - | 1 megapixel | - | - |
| Weight |
4.48 oz (127g) |
5.1 oz (145g) |
4.94 oz (140g) |
9.28 oz (263g) |
| Dimensions |
4.06" x 1.97" x 0.78" (103 x 50 x 19.9 mm) |
5" x 2.5" x 0.4" (127 x 64 x 10.2 mm) |
4.02" x 1.97" x 0.7" (102 x 50 x 17.8 mm) |
5.1" x 2" x 1" (130 x 51 x 25.4 mm) |
| Form Factor | Clamshell | Slab | Slide | Slab |
| Platform / OS | (proprietary) | Android | S60 (Symbian) | (proprietary) |
| Network Bands |
CDMA: 850, 1900 |
WCDMA: 1, 2, 5, 8 GSM: 850, 900, 1800, 1900 |
WCDMA: 1 GSM: 850, 900, 1800, 1900 |
TDMA: 850, 1900 AMPS: 850 |
| Data Technology | EVDO rA | HSPA 14.4 | EDGE | - |
| Features | ||||
| Flashlight | Yes | - | - | - |
| GPS / Location | Yes | n/a | n/a | - |
| Ruggedized | Yes | - | - | - |
| Water-Resistant | Yes | - | - | - |
| Accessibility | ||||
| Adjustable Text Size | Yes | n/a | n/a | - |
| Hearing Aid Compatible | Yes | - | - | - |
| Multiple Languages | Yes | n/a | n/a | Yes |
| TTY/TDD (Digital) | Yes | - | - | - |
| Alerts | ||||
| Extra Display | Yes | - | - | - |
| Ringer Profiles | - | - | Yes | Yes |
| Connectivity | ||||
| Bluetooth |
Yes Classic Audio |
Yes |
Yes Classic Audio |
- |
| Mobile Hotspot | - | n/a | n/a | - |
| NFC | - | Yes | - | - |
| USB | Yes |
Yes Micro-USB |
Yes Micro-USB |
- |
| Wi-Fi | - |
Yes 4 (802.11 b,g,n) |
Yes 802.11 b,g |
- |
| Contacts | ||||
| Picture ID | Yes | n/a | n/a | - |
| Ringer ID | Yes | n/a | n/a | - |
| Voice Dialing | Yes | n/a | n/a | - |
| Customization | ||||
| Custom Graphics | Yes | n/a | n/a | - |
| Custom Ringtones | Yes | n/a | n/a | Yes |
| Real-Music Ringers | Yes | n/a | n/a | - |
| Data & Network | ||||
| Data Tethering | Yes | n/a | n/a | Yes |
| WAP / Web Browser | Yes | n/a | n/a | Yes |
| Input | ||||
| Predictive Text Entry | Yes | n/a | n/a | Yes |
| Side Keys | Yes | Yes | Yes | Yes |
| Touch Screen | - | Yes | - | - |
| Memory | ||||
| Memory Card Slot | Yes | - | Yes * | - |
| Messaging | ||||
| Email Client | - | n/a | n/a | - |
| EMS / Picture Messaging | Yes | n/a | n/a | - |
| Instant Messaging | Yes | n/a | n/a | - |
| MMS | Yes | n/a | n/a | - |
| Text Messaging Templates | Yes | n/a | n/a | - |
| Music | ||||
| FM Radio | - | Yes | Yes | - |
| Headphone Jack (3.5mm) | - | Yes | Yes | - |
| Music Player | Yes | n/a | n/a | - |
| Stereo Speakers | - | - | Yes | - |
| Photo & Video | ||||
| DLNA | - | Yes | - | - |
| TV Output | - | Yes | - | - |
| Video Calling | - | n/a | n/a | - |
| Productivity | ||||
| Alarm | Yes | n/a | n/a | Yes |
| Calculator | Yes | n/a | n/a | - |
| Calendar | Yes | n/a | n/a | - |
| To-Do List | Yes | n/a | n/a | - |
| Voice Memo | Yes | n/a | n/a | - |
| Software | ||||
| BREW | Yes | n/a | n/a | - |
| Games | Yes | n/a | n/a | - |
| Java (J2ME) | - | n/a | n/a | - |
| Voice | ||||
| Push-To-Talk | - | - | Yes * | - |
| Speaker Phone | Yes | Yes | Yes | - |
| * Some versions only | ||||
| Casio Exilim C721 | Sony Xperia S | Nokia N81 | Ericsson R278d | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Casio Exilim C721 | Sony Xperia S | Nokia N81 | Ericsson R278d |
