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| Phone | Sony Ericsson K850 | Motorola Charm | Ericsson R278d | Samsung SCH-A990 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
2.2" diag. 4 : 3 |
2.8" diag. 4 : 3 |
? | ? |
| Display Resolution & Type |
240 x 320 pixels (~182 ppi) LCD (TFT/TFD) |
320 x 240 pixels (~143 ppi) LCD (TFT/TFD) |
101 x 40 pixels |
240 x 320 pixels LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | ? | ? |
| Battery | ? | 1,170 mAh | ? | 1,000 mAh |
| Processor | ? | 720 MHz TI OMAP3410 | ? | ? |
| RAM | ? | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | 5 megapixel | 3 megapixel | - | 3 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | ? | ? | - | ? |
| Front Camera | - | - | - | - |
| Weight |
4.2 oz (119g) |
3.88 oz (110g) |
9.28 oz (263g) |
4.4 oz (125g) |
| Dimensions |
4" x 1.9" x 0.7" (102 x 48 x 17.8 mm) |
3.87" x 2.65" x 0.45" (98 x 67 x 11.4 mm) |
5.1" x 2" x 1" (130 x 51 x 25.4 mm) |
3.8" x 1.88" x 0.82" (97 x 48 x 20.8 mm) |
| Form Factor | Slab | Slab | Slab | Clamshell |
| Platform / OS | (proprietary) | Android | (proprietary) | (proprietary) |
| Network Bands |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
TDMA: 850, 1900 AMPS: 850 |
CDMA: 850, 1900 |
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| Data Technology | HSDPA 3.6 | HSDPA 3.6 | - | EVDO r0 |
| Features | ||||
| Flashlight | - | - | - | Yes |
| GPS / Location | - | n/a | - | Yes |
| Accessibility | ||||
| Hearing Aid Compatible | - | - | - |
Yes M3 (mostly compatible) |
| Multiple Languages | Yes | n/a | Yes | Yes |
| TTY/TDD (Digital) | Yes | Yes | - | Yes |
| Alerts | ||||
| Extra Display | - | - | - | Yes |
| Ringer Profiles | Yes | - | Yes | - |
| Connectivity | ||||
| Bluetooth | Yes | Yes | - | Yes |
| USB | Yes |
Yes Micro-USB |
- | Yes |
| Wi-Fi | - |
Yes 4 (802.11 b,g,n) |
- | - |
| Contacts | ||||
| Picture ID | Yes | n/a | - | Yes |
| Ringer ID | Yes | n/a | - | Yes |
| Voice Dialing | Yes | n/a | - | Yes |
| Customization | ||||
| Custom Graphics | Yes | n/a | - | Yes |
| Custom Ringtones | Yes | n/a | Yes | Yes |
| Real-Music Ringers | Yes | n/a | - | Yes |
| Data & Network | ||||
| Data Tethering | Yes | n/a | Yes | 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 | - | - |
| Touch Screen | - |
Yes Capacitive |
- | - |
| Memory | ||||
| Memory Card Slot | Yes | 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 | - | - | - |
| Headphone Jack (3.5mm) | - | Yes | - | - |
| Music Player | Yes | n/a | - | Yes |
| Stereo Speakers | - | - | - | Yes |
| Photo & Video | ||||
| TV Output | - | - | - | Yes |
| Video Calling | Yes * | n/a | - | - |
| Productivity | ||||
| Alarm | Yes | n/a | Yes | Yes |
| Calculator | Yes | n/a | - | Yes |
| Calendar | Yes | n/a | - | Yes |
| To-Do List | Yes | n/a | - | - |
| Voice Memo | Yes | n/a | - | Yes |
| Software | ||||
| BREW | - | n/a | - | Yes |
| Games | Yes | n/a | - | Yes |
| Java (J2ME) | Yes | n/a | - | - |
| Voice | ||||
| Speaker Phone | Yes | Yes | - | Yes |
| * Some versions only | ||||
| Sony Ericsson K850 | Motorola Charm | Ericsson R278d | Samsung SCH-A990 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Sony Ericsson K850 | Motorola Charm | Ericsson R278d | Samsung SCH-A990 |
