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| Phone | Sony Ericsson Z550a | Motorola ROKR E2 | Siemens A56 / A56i |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size |
1.9" diag. 4 : 3 |
? | ? |
| Display Resolution & Type |
176 x 220 pixels (~148 ppi) LCD (TFT/TFD) |
240 x 320 pixels LCD (TFT/TFD) |
101 x 64 pixels |
| Display Refresh | ? | ? | ? |
| Battery | ? | ? | 700 mAh |
| Processor | ? | ? | ? |
| RAM | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | 1 megapixel | 1 megapixel | - |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | ? | ? | - |
| Front Camera | - | - | - |
| Weight |
3.26 oz (92g) |
3.77 oz (107g) |
3 oz (85g) |
| Dimensions |
3.43" x 1.77" x 0.79" (87 x 45 x 20.1 mm) |
4.17" x 1.95" x 0.71" (106 x 50 x 18 mm) |
4" x 1.7" x 0.8" (102 x 43 x 20.3 mm) |
| Form Factor | Clamshell | Slab | Slab |
| Platform / OS | (proprietary) | (proprietary) | (proprietary) |
| Network Bands |
GSM: 850, 900, 1800, 1900 |
GSM: 900, 1800, 1900 |
GSM: 850, 1900 |
| Data Technology | GPRS | EDGE | - |
| Features | |||
| GPS / Location | - | - | Yes |
| Accessibility | |||
| Multiple Languages | Yes | Yes | - |
| TTY/TDD (Digital) | Yes | - | Yes |
| Alerts | |||
| Extra Display | Yes | - | - |
| Ringer Profiles | Yes | Yes | Yes |
| Connectivity | |||
| Bluetooth | Yes | Yes | - |
| USB | Yes | Yes | - |
| Contacts | |||
| Picture ID | Yes | Yes | Yes |
| Ringer ID | Yes | Yes | Yes |
| Voice Dialing | 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 | - |
| WAP / Web Browser | Yes | Yes | Yes |
| Input | |||
| Predictive Text Entry | Yes | Yes | Yes |
| Side Keys | Yes | Yes | - |
| Memory | |||
| Memory Card Slot | Yes | Yes | - |
| Messaging | |||
| Email Client | Yes | Yes | - |
| EMS / Picture Messaging | - | - | Yes |
| MMS | Yes | Yes | - |
| Text Messaging Templates | Yes | Yes | - |
| Music | |||
| FM Radio | Yes | Yes | - |
| Headphone Jack (3.5mm) | - | Yes | - |
| Music Player | Yes | Yes | - |
| Productivity | |||
| Alarm | Yes | Yes | Yes |
| Calculator | Yes | Yes | Yes |
| Calendar | Yes | Yes | - |
| To-Do List | Yes | Yes | - |
| Voice Memo | Yes | Yes | - |
| Software | |||
| Games | Yes | Yes | Yes |
| Java (J2ME) | Yes | Yes | - |
| Voice | |||
| Push-To-Talk | Yes * | - | - |
| Speaker Phone | Yes | Yes | - |
| * Some versions only | |||
| Sony Ericsson Z550a | Motorola ROKR E2 | Siemens A56 / A56i | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Sony Ericsson Z550a | Motorola ROKR E2 | Siemens A56 / A56i |
