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| Phone | Sony Ericsson Z550a | Samsung Comeback T559 | LG eXpo GW820 |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size |
1.9" diag. 4 : 3 |
2.6" diag. 5 : 3 |
3.2" diag. 5 : 3 |
| Display Resolution & Type |
176 x 220 pixels (~148 ppi) LCD (TFT/TFD) |
400 x 240 pixels (~179 ppi) LCD (TFT/TFD) |
480 x 800 pixels (~292 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? |
| Battery | ? | 960 mAh | 1,500 mAh |
| Processor | ? | ? | ? |
| RAM | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | 1 megapixel | 2 megapixel | 5 megapixel |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | ? | QVGA (320 x 240) | ? |
| Front Camera | - | - | - |
| Weight |
3.26 oz (92g) |
4.6 oz (130g) |
5.2 oz (147g) |
| Dimensions |
3.43" x 1.77" x 0.79" (87 x 45 x 20.1 mm) |
4.33" x 2.2" x 0.73" (110 x 56 x 18.5 mm) |
4.45" x 2.16" x 0.63" (113 x 55 x 16 mm) |
| Form Factor | Clamshell | Slab | Slab |
| Platform / OS | (proprietary) | (proprietary) | Windows Mobile Professional |
| Network Bands |
GSM: 850, 900, 1800, 1900 |
WCDMA: 4 GSM: 850, 900, 1800, 1900 |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
| Data Technology | GPRS | HSDPA 3.6 | HSPA 7.2 |
| Features | |||
| Fingerprint Reader | - | - | Yes |
| GPS / Location | - | - | n/a |
| Accessibility | |||
| Adjustable Text Size | - | - | n/a |
| Multiple Languages | Yes | Yes | n/a |
| TTY/TDD (Digital) | Yes | - | Yes |
| Alerts | |||
| Extra Display | Yes | Yes | - |
| Ringer Profiles | Yes | Yes | Yes |
| Connectivity | |||
| Bluetooth | Yes |
Yes Classic Audio |
Yes Classic Audio |
| USB | Yes | Yes |
Yes Micro-USB |
| Wi-Fi | - | - |
Yes 802.11 b,g |
| Contacts | |||
| Picture ID | Yes | Yes | n/a |
| Ringer ID | Yes | Yes | n/a |
| Voice Dialing | Yes | Yes | n/a |
| Customization | |||
| Custom Graphics | Yes | Yes | n/a |
| Custom Ringtones | Yes | Yes | n/a |
| Real-Music Ringers | Yes | Yes | n/a |
| Data & Network | |||
| Data Tethering | Yes | - | n/a |
| WAP / Web Browser | Yes | Yes | n/a |
| Input | |||
| Predictive Text Entry | Yes | Yes | n/a |
| Side Keys | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | Yes | Yes |
| Touch Screen | - | - | Yes |
| Memory | |||
| Memory Card Slot | Yes | Yes | Yes |
| Messaging | |||
| Email Client | Yes | Yes | n/a |
| Instant Messaging | - | Yes | n/a |
| MMS | Yes | Yes | n/a |
| Text Messaging Templates | Yes | Yes | n/a |
| Music | |||
| FM Radio | Yes | - | Yes |
| Music Player | Yes | Yes | n/a |
| Photo & Video | |||
| TV Output | - | - | Yes |
| Productivity | |||
| Alarm | Yes | Yes | n/a |
| Calculator | Yes | Yes | n/a |
| Calendar | Yes | Yes | n/a |
| To-Do List | Yes | Yes | n/a |
| Voice Memo | Yes | Yes | n/a |
| Software | |||
| Games | Yes | Yes | n/a |
| Java (J2ME) | Yes | Yes | n/a |
| Voice | |||
| Push-To-Talk | Yes * | - | - |
| Speaker Phone | Yes | Yes | Yes |
| * Some versions only | |||
| Sony Ericsson Z550a | Samsung Comeback T559 | LG eXpo GW820 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Sony Ericsson Z550a | Samsung Comeback T559 | LG eXpo GW820 |
