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| Phone | Sony Ericsson K850 | Samsung SCH-A310 | Nokia N-Gage QD | Samsung SGH-X640 |
| 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 |
240 x 320 pixels (~182 ppi) LCD (TFT/TFD) |
128 x 128 pixels LCD (Grayscale) |
176 x 208 pixels LCD (Color) |
128 x 160 pixels LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? | ? |
| Battery | ? | ? | 1,070 mAh | 800 mAh |
| Processor | ? | ? | ? | ? |
| RAM | ? | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | 5 megapixel | - | - | Yes |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | ? | - | - | - |
| Front Camera | - | - | - | - |
| Weight |
4.2 oz (119g) |
3.2 oz (91g) |
5.04 oz (143g) |
3 oz (85g) |
| Dimensions |
4" x 1.9" x 0.7" (102 x 48 x 17.8 mm) |
3.43" x 1.89" x 0.87" (87 x 48 x 22.1 mm) |
4.65" x 2.68" x 0.87" (118 x 68 x 22.1 mm) |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
| Form Factor | Slab | Clamshell | Slab | Clamshell |
| Platform / OS | (proprietary) | (proprietary) | S60 (Symbian) | (proprietary) |
| Network Bands |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 AMPS: 850 |
GSM: 850, 1900 |
GSM: 900, 1800, 1900 |
| Data Technology | HSDPA 3.6 | 1xRTT | GPRS | GPRS |
| Features | ||||
| GPS / Location | - | Yes | n/a | - |
| Accessibility | ||||
| Multiple Languages | Yes | Yes | n/a | Yes |
| TTY/TDD (Digital) | Yes | - | - | - |
| Alerts | ||||
| Extra Display | - | Yes | - | - |
| Ringer Profiles | Yes | - | Yes | - |
| Connectivity | ||||
| Bluetooth | Yes | - | Yes | - |
| USB | Yes | Yes | - | - |
| Contacts | ||||
| Picture ID | Yes | - | n/a | Yes |
| Ringer ID | Yes | - | n/a | Yes |
| Voice Dialing | Yes | Yes | n/a | - |
| Customization | ||||
| Changeable Body Plates | - | Yes | - | - |
| Custom Graphics | Yes | - | n/a | Yes |
| Custom Ringtones | Yes | - | n/a | Yes |
| Real-Music Ringers | Yes | - | n/a | - |
| Data & Network | ||||
| Data Tethering | Yes | Yes | n/a | - |
| WAP / Web Browser | Yes | Yes | n/a | Yes |
| Input | ||||
| Predictive Text Entry | Yes | Yes | n/a | Yes |
| Side Keys | Yes | Yes | - | Yes |
| Memory | ||||
| Memory Card Slot | Yes | - | Yes | - |
| Messaging | ||||
| Email Client | Yes | - | n/a | - |
| EMS / Picture Messaging | - | - | n/a | Yes |
| Instant Messaging | - | - | n/a | - |
| MMS | Yes | - | n/a | Yes |
| Text Messaging Templates | Yes | - | n/a | Yes |
| Music | ||||
| FM Radio | Yes | - | - | - |
| Music Player | Yes | - | n/a | - |
| Photo & Video | ||||
| Video Calling | Yes * | - | n/a | - |
| Productivity | ||||
| Alarm | Yes | - | n/a | Yes |
| Calculator | 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 | ||||
| Headset Jack (2.5 mm) | - | Yes | n/a | Yes |
| Speaker Phone | Yes | - | Yes | Yes |
| * Some versions only | ||||
| Sony Ericsson K850 | Samsung SCH-A310 | Nokia N-Gage QD | Samsung SGH-X640 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Sony Ericsson K850 | Samsung SCH-A310 | Nokia N-Gage QD | Samsung SGH-X640 |
