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| Phone | Sony Ericsson J300a | Cal-Comp EZ | Samsung SCH-A990 | Ericsson T39 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? | ? | ? | ? |
| Display Resolution & Type |
128 x 128 pixels LCD (STN) |
128 x 128 pixels LCD (STN) |
240 x 320 pixels LCD (TFT/TFD) |
? LCD (Grayscale) |
| Display Refresh | ? | ? | ? | ? |
| Battery | ? | 800 mAh | 1,000 mAh | ? |
| Processor | ? | ? | ? | ? |
| RAM | ? | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | - | - | 3 megapixel | - |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | - | - | ? | - |
| Front Camera | - | - | - | - |
| Weight |
2.75 oz (78g) |
2.47 oz (70g) |
4.4 oz (125g) |
3.03 oz (86g) |
| Dimensions |
3.9" x 1.68" x 0.72" (99 x 43 x 18.3 mm) |
4.04" x 1.71" x 0.63" (103 x 43 x 16 mm) |
3.8" x 1.88" x 0.82" (97 x 48 x 20.8 mm) |
3.78" x 1.97" x 0.71" (96 x 50 x 18 mm) |
| Form Factor | Slab | Slab | Clamshell | Flip |
| Platform / OS | (proprietary) | (proprietary) | (proprietary) | (proprietary) |
| Network Bands |
GSM: 850, 1900 |
CDMA: 850, 1900 |
CDMA: 850, 1900 |
GSM: 900, 1800, 1900 |
| Data Technology | GPRS | 1xRTT | EVDO r0 | GPRS |
| Features | ||||
| Flashlight | - | - | Yes | - |
| GPS / Location | - | Yes | Yes | - |
| Accessibility | ||||
| Hearing Aid Compatible | - | - |
Yes M3 (mostly compatible) |
- |
| Multiple Languages | - | Yes | Yes | Yes |
| TTY/TDD (Digital) | Yes | - | Yes | - |
| Alerts | ||||
| Extra Display | - | - | Yes | - |
| Ringer Profiles | Yes | - | - | Yes |
| Connectivity | ||||
| Bluetooth | - | - | Yes | Yes |
| Infrared (IR) | - | - | - | Yes |
| USB | Yes |
Yes Mini-USB |
Yes | - |
| Contacts | ||||
| Picture ID | Yes | - | Yes | - |
| Ringer ID | - | - | Yes | - |
| Voice Dialing | Yes | - | Yes | Yes |
| Customization | ||||
| Changeable Body Plates | Yes | - | - | - |
| Custom Graphics | Yes | - | Yes | Yes |
| Custom Ringtones | Yes | - | Yes | Yes |
| Real-Music Ringers | - | - | Yes | - |
| Data & Network | ||||
| Data Tethering | Yes | - | Yes | Yes |
| WAP / Web Browser | Yes | - | Yes | Yes |
| Input | ||||
| Predictive Text Entry | Yes | - | Yes | Yes |
| Side Keys | - | - | Yes | Yes |
| Memory | ||||
| Memory Card Slot | - | - | Yes | - |
| Messaging | ||||
| Email Client | Yes | - | - | - |
| EMS / Picture Messaging | Yes | - | Yes | - |
| MMS | Yes | - | Yes | - |
| Text Messaging Templates | - | Yes | Yes | Yes |
| Music | ||||
| Music Player | - | - | Yes | - |
| Stereo Speakers | - | - | Yes | - |
| Photo & Video | ||||
| TV Output | - | - | Yes | - |
| Productivity | ||||
| Alarm | Yes | Yes | Yes | Yes |
| Calculator | Yes | Yes | Yes | Yes |
| Calendar | Yes | Yes | Yes | Yes |
| To-Do List | Yes | Yes | - | - |
| Voice Memo | Yes | Yes * | Yes | Yes |
| Software | ||||
| BREW | - | - | Yes | - |
| Games | Yes | - | Yes | Yes |
| Java (J2ME) | Yes | - | - | - |
| Voice | ||||
| Headset Jack (2.5 mm) | - | Yes | - | - |
| Speaker Phone | Yes | - | Yes | - |
| * Some versions only | ||||
| Sony Ericsson J300a | Cal-Comp EZ | Samsung SCH-A990 | Ericsson T39 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Sony Ericsson J300a | Cal-Comp EZ | Samsung SCH-A990 | Ericsson T39 |
