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| Phone | Samsung SGH-X640 | Motorola T720 / T721 (GSM) | BlackBerry Storm2 9550 |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size | ? | ? |
3.3" diag. 4 : 3 |
| Display Resolution & Type |
128 x 160 pixels LCD (TFT/TFD) |
120 x 160 pixels LCD (STN) |
360 x 480 pixels (~185 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? |
| Battery | 800 mAh | ? | 1,400 mAh |
| Processor | ? | ? | ? |
| RAM | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | Yes | - | 3 megapixel |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | - | - | ? |
| Front Camera | - | - | - |
| Weight |
3 oz (85g) |
3.56 oz (101g) |
5.64 oz (160g) |
| Dimensions |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
3.5" x 1.87" x 0.83" (89 x 47 x 21.1 mm) |
4.43" x 2.45" x 0.55" (113 x 62 x 14 mm) |
| Form Factor | Clamshell | Clamshell | Slab |
| Platform / OS | (proprietary) | (proprietary) | BlackBerry OS |
| Network Bands |
GSM: 900, 1800, 1900 |
GSM: 850, 1900 |
WCDMA: 1 CDMA: 850, 1900 GSM: 850, 900, 1800, 1900 |
| Data Technology | GPRS | GPRS | EVDO rA |
| Features | |||
| GPS / Location | - | - | n/a |
| Accessibility | |||
| Adjustable Text Size | - | - | n/a |
| Hearing Aid Compatible | - | - |
Yes M3 (mostly compatible) |
| Multiple Languages | Yes | Yes | n/a |
| TTY/TDD (Digital) | - | - | Yes |
| Alerts | |||
| Extra Display | - | Yes | - |
| Ringer Profiles | - | - | Yes |
| Connectivity | |||
| Bluetooth | - | - | Yes |
| USB | - | - | Yes |
| Wi-Fi | - | - |
Yes 802.11 b,g |
| Contacts | |||
| Picture ID | Yes | - | n/a |
| Ringer ID | Yes | Yes | n/a |
| Voice Dialing | - | Yes | n/a |
| Customization | |||
| Changeable Body Plates | - | Yes | - |
| Custom Graphics | Yes | Yes | n/a |
| Custom Ringtones | Yes | Yes | n/a |
| Real-Music Ringers | - | - | n/a |
| Data & Network | |||
| Data Tethering | - | Yes | n/a |
| WAP / Web Browser | Yes | Yes | n/a |
| Input | |||
| Predictive Text Entry | Yes | Yes | n/a |
| Side Keys | Yes | Yes | Yes |
| Touch Screen | - | - |
Yes Capacitive |
| Memory | |||
| Memory Card Slot | - | - | Yes |
| Messaging | |||
| Email Client | - | Yes | n/a |
| EMS / Picture Messaging | Yes | Yes | n/a |
| Instant Messaging | - | - | n/a |
| MMS | Yes | - | n/a |
| Text Messaging Templates | Yes | Yes | n/a |
| Music | |||
| Headphone Jack (3.5mm) | - | - | Yes |
| Music Player | - | - | n/a |
| Productivity | |||
| Alarm | Yes | Yes | n/a |
| Calculator | Yes | Yes | n/a |
| Calendar | Yes | Yes | n/a |
| To-Do List | Yes | - | n/a |
| Voice Memo | Yes | Yes | n/a |
| Software | |||
| Games | Yes | Yes | n/a |
| Java (J2ME) | Yes | Yes | n/a |
| Voice | |||
| Headset Jack (2.5 mm) | Yes | Yes | n/a |
| Speaker Phone | Yes | - | Yes |
| Samsung SGH-X640 | Motorola T720 / T721 (GSM) | BlackBerry Storm2 9550 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-X640 | Motorola T720 / T721 (GSM) | BlackBerry Storm2 9550 |
