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| Phone | Sony Ericsson Z550a | BlackBerry Curve 8320 | Ericsson R278d | Siemens SX66 / MDA III / PDA2K (HTC Blue Angel) |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
1.9" diag. 4 : 3 |
? | ? | ? |
| Display Resolution & Type |
176 x 220 pixels (~148 ppi) LCD (TFT/TFD) |
320 x 240 pixels LCD (TFT/TFD) |
101 x 40 pixels |
240 x 320 pixels LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? | ? |
| Battery | ? | 1,100 mAh | ? | 1,490 mAh |
| Processor | ? | ? | ? | 400 MHz Intel XScale |
| RAM | ? | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | 1 megapixel | 2 megapixel | - | Yes |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | ? | - | - | QCIF (176 x 144) |
| Front Camera | - | - | - | - |
| Weight |
3.26 oz (92g) |
3.92 oz (111g) |
9.28 oz (263g) |
7.41 oz (210g) |
| Dimensions |
3.43" x 1.77" x 0.79" (87 x 45 x 20.1 mm) |
4.21" x 2.36" x 0.61" (107 x 60 x 15.5 mm) |
5.1" x 2" x 1" (130 x 51 x 25.4 mm) |
4.92" x 2.83" x 0.75" (125 x 72 x 19.1 mm) |
| Form Factor | Clamshell | Slab | Slab | Slide |
| Platform / OS | (proprietary) | BlackBerry OS | (proprietary) | Windows Mobile Professional |
| Network Bands |
GSM: 850, 900, 1800, 1900 |
GSM: 850, 900, 1800, 1900 |
TDMA: 850, 1900 AMPS: 850 |
GSM: 850, 900, 1800, 1900 |
| Data Technology | GPRS | EDGE | - | GPRS |
| Features | ||||
| Accessibility | ||||
| Adjustable Text Size | - | n/a | - | n/a |
| Hearing Aid Compatible | - |
Yes M3, T3 (mostly tele-coil compatible) |
- | - |
| Multiple Languages | Yes | n/a | Yes | n/a |
| TTY/TDD (Digital) | Yes | Yes | - | - |
| Alerts | ||||
| Extra Display | Yes | - | - | - |
| Ringer Profiles | Yes | Yes | Yes | - |
| Connectivity | ||||
| Bluetooth | Yes | Yes | - | Yes |
| Infrared (IR) | - | - | - | Yes |
| USB | Yes | Yes | - | Yes |
| Wi-Fi | - |
Yes 802.11 b,g |
- | Yes |
| Contacts | ||||
| Picture ID | Yes | n/a | - | n/a |
| Ringer ID | Yes | n/a | - | n/a |
| Voice Dialing | Yes | n/a | - | n/a |
| Customization | ||||
| Custom Graphics | Yes | n/a | - | n/a |
| Custom Ringtones | Yes | n/a | Yes | n/a |
| Real-Music Ringers | Yes | n/a | - | n/a |
| Data & Network | ||||
| Data Tethering | Yes | n/a | Yes | n/a |
| WAP / Web Browser | Yes | n/a | Yes | n/a |
| Input | ||||
| Predictive Text Entry | Yes | n/a | Yes | n/a |
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | Yes | - | Yes |
| Touch Screen | - | - | - | Yes |
| Memory | ||||
| Memory Card Slot | Yes | Yes | - | Yes |
| Messaging | ||||
| Email Client | Yes | n/a | - | n/a |
| Instant Messaging | - | n/a | - | n/a |
| MMS | Yes | n/a | - | n/a |
| Text Messaging Templates | Yes | n/a | - | n/a |
| Music | ||||
| FM Radio | Yes | - | - | - |
| Headphone Jack (3.5mm) | - | Yes | - | - |
| Music Player | Yes | n/a | - | n/a |
| Productivity | ||||
| Alarm | Yes | n/a | Yes | n/a |
| Calculator | Yes | n/a | - | n/a |
| Calendar | Yes | n/a | - | n/a |
| To-Do List | Yes | n/a | - | n/a |
| Voice Memo | Yes | n/a | - | n/a |
| Software | ||||
| Games | Yes | n/a | - | n/a |
| Java (J2ME) | Yes | n/a | - | n/a |
| Voice | ||||
| Headset Jack (2.5 mm) | - | n/a | - | n/a |
| Push-To-Talk | Yes * | - | - | - |
| Speaker Phone | Yes | Yes | - | Yes |
| * Some versions only | ||||
| Sony Ericsson Z550a | BlackBerry Curve 8320 | Ericsson R278d | Siemens SX66 / MDA III / PDA2K (HTC Blue Angel) | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Sony Ericsson Z550a | BlackBerry Curve 8320 | Ericsson R278d | Siemens SX66 / MDA III / PDA2K (HTC Blue Angel) |
