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| Phone | Motorola Rival A455 | Motorola Droid X | Sharp Sidekick LX 2009 | Samsung SPH-A640 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
2.2" diag. 4 : 3 |
4.3" diag. 16 : 9 |
3.2" diag. 16 : 9 |
? |
| Display Resolution & Type |
176 x 220 pixels (~131 ppi) LCD (TFT/TFD) |
480 x 854 pixels (~228 ppi) LCD (TFT/TFD) |
854 x 480 pixels (~306 ppi) LCD (TFT/TFD) |
128 x 160 pixels LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | ? | ? |
| Battery | 940 mAh | 1,540 mAh | 1,250 mAh | 800 mAh |
| Processor | ? | 1 GHz TI OMAP 3630 (ARM Cortex A8) | ? | ? |
| RAM | ? | ? | ? | ? |
| Storage | ? raw hardware | 8 GB | ? raw hardware | ? raw hardware |
| Main Camera | 2 megapixel | 8 megapixel | 3 megapixel | Yes |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | QVGA (320 x 240) | 720p HD | QVGA (320 x 240) | - |
| Front Camera | - | - | - | - |
| Weight |
4.48 oz (127g) |
5.47 oz (155g) |
5.78 oz (164g) |
3.2 oz (91g) |
| Dimensions |
3.82" x 1.96" x 0.73" (97 x 50 x 18.5 mm) |
5" x 2.6" x 0.4" (127 x 66 x 10.2 mm) |
5.12" x 2.36" x 0.63" (130 x 60 x 16 mm) |
3.6" x 1.8" x 0.9" (91 x 46 x 22.9 mm) |
| Form Factor | Slide | Slab | Swivel | Clamshell |
| Platform / OS | (proprietary) | Android | (proprietary) | (proprietary) |
| Network Bands |
CDMA: 850, 1900 |
CDMA: 850, 1900 |
WCDMA: 1, 4 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 AMPS: 850 |
| Data Technology | EVDO r0 | EVDO rA | HSPA 7.2 | 1xRTT |
| Features | ||||
| GPS / Location | Yes | n/a | Yes | Yes |
| Accessibility | ||||
| Adjustable Text Size | - | n/a | Yes | - |
| Hearing Aid Compatible |
Yes M3, T3 (mostly tele-coil compatible) |
Yes M4, T3 (mostly tele-coil compatible) |
Yes M3 (mostly compatible) |
Yes M3 (mostly compatible) |
| Multiple Languages | Yes | n/a | Yes | Yes |
| TTY/TDD (Digital) | Yes | Yes | - | Yes |
| Alerts | ||||
| Extra Display | - | - | - | Yes |
| Ringer Profiles | - | - | Yes | - |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | Yes |
| Mobile Hotspot | - | n/a | - | - |
| USB |
Yes Micro-USB |
Yes | Yes | Yes |
| Wi-Fi | - | Yes | - | - |
| Contacts | ||||
| Picture ID | Yes | n/a | Yes | Yes |
| Ringer ID | Yes | n/a | Yes | Yes |
| Voice Dialing | Yes | n/a | - | Yes |
| Customization | ||||
| Custom Graphics | Yes | n/a | Yes | Yes |
| Custom Ringtones | Yes | n/a | Yes | Yes |
| Real-Music Ringers | Yes | n/a | Yes | - |
| Data & Network | ||||
| Data Tethering | Yes | n/a | - | Yes |
| WAP / Web Browser | Yes | n/a | Yes | Yes |
| Input | ||||
| Predictive Text Entry | - | n/a | - | Yes |
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | Yes | - | Yes | - |
| Touch Screen | Yes |
Yes Capacitive |
- | - |
| Memory | ||||
| Memory Card Slot | Yes | Yes | Yes | - |
| Messaging | ||||
| Email Client | Yes | n/a | Yes | - |
| EMS / Picture Messaging | Yes | n/a | - | - |
| Instant Messaging | Yes | n/a | Yes | - |
| MMS | Yes | n/a | Yes | - |
| Text Messaging Templates | Yes | n/a | Yes | Yes |
| Music | ||||
| FM Radio | - | Yes | - | - |
| Headphone Jack (3.5mm) | Yes | Yes | Yes | - |
| Music Player | Yes | n/a | Yes | - |
| Photo & Video | ||||
| DLNA | - | Yes | - | - |
| TV Output | - | Yes | - | - |
| Productivity | ||||
| Alarm | Yes | n/a | Yes | Yes |
| Calculator | Yes | n/a | - | Yes |
| Calendar | Yes | n/a | Yes | Yes |
| To-Do List | - | n/a | Yes | Yes |
| Voice Memo | Yes | n/a | - | Yes |
| Software | ||||
| BREW | Yes | n/a | - | - |
| Games | Yes | n/a | Yes | Yes |
| Java (J2ME) | - | n/a | Yes | Yes |
| Voice | ||||
| Headset Jack (2.5 mm) | - | n/a | - | Yes |
| Push-To-Talk | - | - | - | Yes |
| Speaker Phone | Yes | Yes | Yes | Yes |
| Motorola Rival A455 | Motorola Droid X | Sharp Sidekick LX 2009 | Samsung SPH-A640 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Motorola Rival A455 | Motorola Droid X | Sharp Sidekick LX 2009 | Samsung SPH-A640 |
