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| Phone | Sony Ericsson J300a | Ericsson R520 | LG VX-4700 / VX-4650 / AX-4750 / UX-4750 |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size | ? | ? | ? |
| Display Resolution & Type |
128 x 128 pixels LCD (STN) |
? |
128 x 128 pixels LCD (STN) |
| Display Refresh | ? | ? | ? |
| Battery | ? | ? | 1,000 mAh |
| Processor | ? | ? | ? |
| RAM | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | - | - | - |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | - | - | - |
| Front Camera | - | - | - |
| Weight |
2.75 oz (78g) |
4.23 oz (120g) |
3.7 oz (105g) |
| Dimensions |
3.9" x 1.68" x 0.72" (99 x 43 x 18.3 mm) |
5.12" x 1.97" x 0.63" (130 x 50 x 16 mm) |
3.8" x 1.93" x 0.89" (97 x 49 x 22.6 mm) |
| Form Factor | Slab | Slab | Clamshell |
| Platform / OS | (proprietary) | (proprietary) | (proprietary) |
| Network Bands |
GSM: 850, 1900 |
GSM: 900, 1800, 1900 |
CDMA: 850, 1900 AMPS: 850 |
| Data Technology | GPRS | GPRS | 1xRTT |
| Features | |||
| GPS / Location | - | - | Yes |
| Accessibility | |||
| Hearing Aid Compatible | - | - |
Yes M3 (mostly compatible) |
| Multiple Languages | - | Yes | Yes |
| TTY/TDD (Digital) | Yes | - | Yes |
| Alerts | |||
| Extra Display | - | - | Yes |
| Ringer Profiles | Yes | Yes | - |
| Connectivity | |||
| Bluetooth | - | Yes | - |
| Infrared (IR) | - | Yes | - |
| USB | Yes | - | Yes |
| Contacts | |||
| Picture ID | Yes | - | - |
| Ringer ID | - | - | Yes |
| Voice Dialing | Yes | Yes | Yes |
| Customization | |||
| Changeable Body Plates | Yes | - | - |
| Custom Graphics | Yes | - | Yes |
| Custom Ringtones | Yes | Yes | 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 |
| Messaging | |||
| Email Client | Yes | - | - |
| EMS / Picture Messaging | Yes | - | - |
| MMS | Yes | - | - |
| Text Messaging Templates | - | Yes | Yes |
| Productivity | |||
| Alarm | Yes | Yes | Yes |
| Calculator | Yes | Yes | Yes |
| Calendar | Yes | Yes | Yes |
| To-Do List | Yes | - | - |
| Voice Memo | Yes | Yes | - |
| Software | |||
| BREW | - | - | Yes |
| Games | Yes | Yes | Yes |
| Java (J2ME) | Yes | - | - |
| Voice | |||
| Headset Jack (2.5 mm) | - | - | Yes |
| Push-To-Talk | - | - | Yes * |
| Speaker Phone | Yes | Yes | Yes |
| * Some versions only | |||
| Sony Ericsson J300a | Ericsson R520 | LG VX-4700 / VX-4650 / AX-4750 / UX-4750 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Sony Ericsson J300a | Ericsson R520 | LG VX-4700 / VX-4650 / AX-4750 / UX-4750 |
