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| Phone | Sony Ericsson Z520 / Z525 | Cal-Comp EZ | LG PM-225 | BlackBerry 7750 | Siemens C56 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size | ? | ? | ? | ? | ? |
| Display Resolution & Type |
128 x 160 pixels LCD (TFT/TFD) |
128 x 128 pixels LCD (STN) |
128 x 160 pixels LCD (STN) |
240 x 240 pixels LCD (Color) |
101 x 64 pixels |
| Display Refresh | ? | ? | ? | ? | ? |
| Battery | ? | 800 mAh | 1,000 mAh | ? | 700 mAh |
| Processor | ? | ? | ? | ? | ? |
| RAM | ? | ? | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | Yes | - | Yes | - | - |
| Wide Camera | - | - | - | - | - |
| Tele Camera | - | - | - | - | - |
| Video Capture | ? | - | - | - | - |
| Front Camera | - | - | - | - | - |
| Weight |
3.46 oz (98g) |
2.47 oz (70g) |
3.35 oz (95g) |
5.01 oz (142g) |
3 oz (85g) |
| Dimensions |
3.27" x 1.81" x 0.94" (83 x 46 x 23.9 mm) |
4.04" x 1.71" x 0.63" (103 x 43 x 16 mm) |
3.53" x 1.76" x 0.93" (90 x 45 x 23.6 mm) |
4.76" x 3.03" x 0.71" (121 x 77 x 18 mm) |
3.98" x 1.73" x 0.83" (101 x 44 x 21.1 mm) |
| Form Factor | Clamshell | Slab | Clamshell | Slab | Slab |
| Platform / OS | (proprietary) | (proprietary) | (proprietary) | BlackBerry OS | (proprietary) |
| Network Bands |
GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 |
CDMA: 850, 1900 AMPS: 850 |
CDMA: 850, 1900 |
GSM: 850, 1900 |
| Data Technology | GPRS | 1xRTT | 1xRTT | 1xRTT | GPRS |
| Features | |||||
| GPS / Location | - | Yes | Yes | n/a | Yes |
| Accessibility | |||||
| Multiple Languages | Yes | Yes | Yes | n/a | Yes |
| TTY/TDD (Digital) | Yes | - | Yes | Yes | Yes |
| Alerts | |||||
| Extra Display | Yes | - | Yes | - | - |
| Ringer Profiles | Yes | - | - | Yes | Yes |
| Connectivity | |||||
| Bluetooth | Yes | - | - | - | - |
| Infrared (IR) | Yes | - | - | - | - |
| USB | Yes |
Yes Mini-USB |
Yes | Yes | Yes |
| Contacts | |||||
| Picture ID | Yes | - | Yes | n/a | - |
| Ringer ID | Yes | - | Yes | n/a | Yes |
| Voice Dialing | Yes | - | Yes | n/a | Yes |
| Customization | |||||
| Changeable Body Plates | Yes | - | - | - | Yes |
| Custom Graphics | Yes | - | Yes | n/a | Yes |
| Custom Ringtones | Yes | - | Yes | n/a | Yes |
| Real-Music Ringers | Yes | - | - | n/a | - |
| Data & Network | |||||
| Data Tethering | Yes | - | - | n/a | Yes |
| WAP / Web Browser | Yes | - | Yes | n/a | Yes |
| Input | |||||
| Predictive Text Entry | Yes | - | Yes | n/a | Yes |
| Side Keys | Yes | - | Yes | Yes | - |
| Text Keyboard, Hardware | - | - | - | Yes | - |
| Messaging | |||||
| Email Client | Yes | - | - | n/a | - |
| EMS / Picture Messaging | Yes | - | - | n/a | Yes |
| MMS | Yes | - | - | n/a | - |
| Text Messaging Templates | Yes | Yes | - | n/a | Yes |
| Productivity | |||||
| Alarm | Yes | Yes | Yes | n/a | Yes |
| Calculator | Yes | Yes | Yes | n/a | Yes |
| Calendar | Yes | Yes | Yes | n/a | Yes |
| To-Do List | Yes | Yes | - | n/a | - |
| Voice Memo | Yes | Yes * | Yes | n/a | - |
| Software | |||||
| Games | Yes | - | Yes | n/a | Yes |
| Java (J2ME) | Yes | - | Yes | n/a | Yes |
| Voice | |||||
| Headset Jack (2.5 mm) | - | Yes | Yes | n/a | - |
| Push-To-Talk | Yes * | - | - | - | - |
| Speaker Phone | Yes | - | Yes | - | Yes |
| * Some versions only | |||||
| Sony Ericsson Z520 / Z525 | Cal-Comp EZ | LG PM-225 | BlackBerry 7750 | Siemens C56 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Sony Ericsson Z520 / Z525 | Cal-Comp EZ | LG PM-225 | BlackBerry 7750 | Siemens C56 |
