Compare Phones
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| Phone | Ericsson R520 | Sony Ericsson T237 / T290a | Siemens S66 / S65 / SP65 | BlackBerry 7750 | 
| Current U.S. Carriers | (none) | (none) | (none) | (none) | 
| Global Availability | Released | Released | Released | Released | 
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? | ? | ? | ? | 
| Display Resolution & Type | ? | 101 x 80 pixels LCD (STN) | 132 x 176 pixels LCD (TFT/TFD) | 240 x 240 pixels LCD (Color) | 
| Display Refresh | ? | ? | ? | ? | 
| Battery | ? | ? | 750 mAh | ? | 
| Processor | ? | ? | ? | ? | 
| RAM | ? | ? | ? | ? | 
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | ? raw hardware | 
| Main Camera | - | - | 1 megapixel | - | 
| Wide Camera | - | - | - | - | 
| Tele Camera | - | - | - | - | 
| Video Capture | - | - | QCIF (176 x 144) | - | 
| Front Camera | - | - | - | - | 
| Weight | 4.23 oz (120g) | 2.79 oz (79g) | 3.46 oz (98g) | 5.01 oz (142g) | 
| Dimensions | 5.12" x 1.97" x 0.63" (130 x 50 x 16 mm) | 4" x 1.71" x 0.71" (102 x 43 x 18 mm) | 4.29" x 1.89" x 0.71" (109 x 48 x 18 mm) | 4.76" x 3.03" x 0.71" (121 x 77 x 18 mm) | 
| Form Factor | Slab | Slab | Slab | Slab | 
| Platform / OS | (proprietary) | (proprietary) | (proprietary) | BlackBerry OS | 
| Network Bands | GSM: 900, 1800, 1900 | GSM: 850, 1900 | GSM: 850, 1800, 1900 | CDMA: 850, 1900 | 
| Data Technology | GPRS | GPRS | GPRS | 1xRTT | 
| Features | ||||
| GPS / Location | - | - | - | n/a | 
| Accessibility | ||||
| Multiple Languages | Yes | Yes | Yes | n/a | 
| TTY/TDD (Digital) | - | Yes | - | Yes | 
| Alerts | ||||
| Ringer Profiles | Yes | - | Yes | Yes | 
| Connectivity | ||||
| Bluetooth | Yes HSP, Sync, OPP, DUN | - | Yes Classic Audio | - | 
| Infrared (IR) | Yes | - | Yes | - | 
| USB | - | Yes | Yes | Yes | 
| 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 | Yes | n/a | 
| Data & Network | ||||
| Data Tethering | Yes | - | Yes | n/a | 
| WAP / Web Browser | Yes | Yes | Yes | n/a | 
| Input | ||||
| Predictive Text Entry | Yes | Yes | Yes | n/a | 
| Side Keys | Yes | Yes | Yes | Yes | 
| Text Keyboard, Hardware | - | - | - | Yes | 
| Memory | ||||
| Memory Card Slot | - | - | Yes | - | 
| Messaging | ||||
| Email Client | - | Yes | Yes | n/a | 
| EMS / Picture Messaging | - | Yes | Yes | n/a | 
| Instant Messaging | - | - | Yes | n/a | 
| MMS | - | Yes | Yes | n/a | 
| Text Messaging Templates | Yes | Yes | - | n/a | 
| Productivity | ||||
| Alarm | Yes | Yes | Yes | n/a | 
| Calculator | Yes | Yes | Yes | n/a | 
| Calendar | Yes | Yes | Yes | n/a | 
| To-Do List | - | - | Yes | n/a | 
| Voice Memo | Yes | Yes | Yes | n/a | 
| Software | ||||
| Games | Yes | Yes | Yes | n/a | 
| Java (J2ME) | - | - | Yes | n/a | 
| Voice | ||||
| Headset Jack (2.5 mm) | - | - | - | n/a | 
| Speaker Phone | Yes | Yes | Yes | - | 
| Ericsson R520 | Sony Ericsson T237 / T290a | Siemens S66 / S65 / SP65 | BlackBerry 7750 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
|  |  |  |  | |
| Phone | Ericsson R520 | Sony Ericsson T237 / T290a | Siemens S66 / S65 / SP65 | BlackBerry 7750 | 
 







