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| Phone | BlackBerry 7750 | Nokia Lumia 521 / 520 | Samsung SPH-i550 | Sharp Sidekick LX 2009 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Not yet released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? |
4" diag. 5 : 3 |
? |
3.2" diag. 16 : 9 |
| Display Resolution & Type |
240 x 240 pixels LCD (Color) |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
320 x 320 pixels LCD (TFT/TFD) |
854 x 480 pixels (~306 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? | ? |
| Battery | ? | 1,430 mAh | ? | 1,250 mAh |
| Processor | ? | 1 GHz Qualcomm Snapdragon S4 MSM8270 | 200 MHz Motorola MX-1 | ? |
| RAM | ? | 512 MB | ? | ? |
| Storage | ? raw hardware | 8 GB | ? raw hardware | ? raw hardware |
| Main Camera | - | 5 megapixel | 1 megapixel | 3 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | - | 720p HD | ? | QVGA (320 x 240) |
| Front Camera | - | - | - | - |
| Weight |
5.01 oz (142g) |
4.39 oz (124g) |
? |
5.78 oz (164g) |
| Dimensions |
4.76" x 3.03" x 0.71" (121 x 77 x 18 mm) |
4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm) |
3.46" x 2.34" x 1.1" (88 x 59 x 27.9 mm) |
5.12" x 2.36" x 0.63" (130 x 60 x 16 mm) |
| Form Factor | Slab | Slab | Clamshell | Swivel |
| Platform / OS | BlackBerry OS | Windows | Palm OS | (proprietary) |
| Network Bands |
CDMA: 850, 1900 |
CDMA: 850, 1900 AMPS: 850 |
WCDMA: 1, 4 GSM: 850, 900, 1800, 1900 |
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| Data Technology | 1xRTT | HSPA+ 21 | 1xRTT | HSPA 7.2 |
| Features | ||||
| GPS / Location | n/a | n/a | n/a | Yes |
| Accessibility | ||||
| Adjustable Text Size | n/a | n/a | n/a | Yes |
| Hearing Aid Compatible | - | Yes | - | Yes |
| Multiple Languages | n/a | n/a | n/a | Yes |
| TTY/TDD (Digital) | Yes | Yes | Yes | - |
| Alerts | ||||
| Extra Display | - | - | Yes | - |
| Ringer Profiles | Yes | - | - | Yes |
| Connectivity | ||||
| Bluetooth |
- |
Yes |
- |
Yes Classic Audio |
| Infrared (IR) | - | - | Yes | - |
| Mobile Hotspot | n/a | n/a | n/a | - |
| USB | Yes | Yes | - | Yes |
| Wi-Fi | - | Yes | - | - |
| Contacts | ||||
| Picture ID | n/a | n/a | n/a | Yes |
| Ringer ID | n/a | n/a | n/a | Yes |
| Voice Dialing | n/a | n/a | n/a | - |
| Customization | ||||
| Custom Graphics | n/a | n/a | n/a | Yes |
| Custom Ringtones | n/a | n/a | n/a | Yes |
| Real-Music Ringers | n/a | n/a | n/a | Yes |
| Data & Network | ||||
| Data Tethering | n/a | n/a | n/a | - |
| WAP / Web Browser | n/a | n/a | n/a | Yes |
| Input | ||||
| Predictive Text Entry | n/a | n/a | n/a | - |
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | Yes | - | - | Yes |
| Touch Screen | - | Yes | Yes | - |
| Memory | ||||
| Memory Card Slot | - | Yes | Yes | Yes |
| Messaging | ||||
| Email Client | n/a | n/a | n/a | Yes |
| Instant Messaging | n/a | n/a | n/a | Yes |
| MMS | n/a | n/a | n/a | Yes |
| Text Messaging Templates | n/a | n/a | n/a | Yes |
| Music | ||||
| Headphone Jack (3.5mm) | - | Yes | - | Yes |
| Music Player | n/a | n/a | n/a | Yes |
| Productivity | ||||
| Alarm | n/a | n/a | n/a | Yes |
| Calculator | n/a | n/a | n/a | - |
| Calendar | n/a | n/a | n/a | Yes |
| To-Do List | n/a | n/a | n/a | Yes |
| Voice Memo | n/a | n/a | n/a | - |
| Software | ||||
| Games | n/a | n/a | n/a | Yes |
| Java (J2ME) | n/a | n/a | n/a | Yes |
| Voice | ||||
| Headset Jack (2.5 mm) | n/a | n/a | n/a | - |
| Speaker Phone | - | Yes | - | Yes |
| BlackBerry 7750 | Nokia Lumia 521 / 520 | Samsung SPH-i550 | Sharp Sidekick LX 2009 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | BlackBerry 7750 | Nokia Lumia 521 / 520 | Samsung SPH-i550 | Sharp Sidekick LX 2009 |
