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| Phone | Samsung SGH-A657 | Motorola Rival A455 | Samsung VI-A820 | Motorola Sidekick Slide |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? |
2.2" diag. 4 : 3 |
? | ? |
| Display Resolution & Type |
176 x 220 pixels LCD (TFT/TFD) |
176 x 220 pixels (~131 ppi) LCD (TFT/TFD) |
128 x 160 pixels LCD (STN) |
320 x 240 pixels LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? | ? |
| Battery | 1,420 mAh | 940 mAh | 1,000 mAh | ? |
| Processor | ? | ? | ? | 225 MHz TI OMAP 850 |
| RAM | ? | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | - | 2 megapixel | - | 1 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | - | QVGA (320 x 240) | - | - |
| Front Camera | - | - | - | - |
| Weight |
4.34 oz (123g) |
4.48 oz (127g) |
3.14 oz (89g) |
5.3 oz (150g) |
| Dimensions |
4.53" x 2.05" x 0.77" (115 x 52 x 19.6 mm) |
3.82" x 1.96" x 0.73" (97 x 50 x 18.5 mm) |
3.56" x 1.88" x 1.06" (90 x 48 x 26.9 mm) |
4.65" x 2.44" x 0.69" (118 x 62 x 17.5 mm) |
| Form Factor | Slab | Slide | Clamshell | Slide |
| Platform / OS | (proprietary) | (proprietary) | (proprietary) | (proprietary) |
| Network Bands |
WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 |
CDMA: 850, 1900 AMPS: 850 |
GSM: 850, 900, 1800, 1900 |
| Data Technology | HSDPA 3.6 | EVDO r0 | 1xRTT | EDGE |
| Features | ||||
| Flashlight | Yes | - | - | - |
| GPS / Location | Yes | Yes | Yes | - |
| Ruggedized | Yes | - | - | - |
| Accessibility | ||||
| Adjustable Text Size | - | - | - | Yes |
| Hearing Aid Compatible | - |
Yes M3, T3 (mostly tele-coil compatible) |
- | - |
| Multiple Languages | Yes | Yes | Yes | - |
| TTY/TDD (Digital) | Yes | Yes | Yes | - |
| Alerts | ||||
| Extra Display | - | - | Yes | - |
| Ringer Profiles | - | - | - | Yes |
| Connectivity | ||||
| Bluetooth | Yes | Yes | - | Yes |
| USB | Yes |
Yes Micro-USB |
- | Yes |
| Contacts | ||||
| Picture ID | Yes | Yes | Yes | Yes |
| Ringer ID | Yes | Yes | Yes | Yes |
| Voice Dialing | - | Yes | Yes | - |
| Customization | ||||
| Custom Graphics | Yes | Yes | Yes | Yes |
| Custom Ringtones | Yes | Yes | Yes | Yes |
| Real-Music Ringers | Yes | Yes | - | Yes |
| Data & Network | ||||
| Data Tethering | Yes | Yes | - | - |
| WAP / Web Browser | Yes | Yes | Yes | Yes |
| Input | ||||
| Predictive Text Entry | Yes | - | Yes | - |
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | Yes | - | Yes |
| Touch Screen | - | Yes | - | - |
| Memory | ||||
| Memory Card Slot | Yes | Yes | - | Yes |
| Messaging | ||||
| Email Client | Yes | Yes | - | Yes |
| EMS / Picture Messaging | - | Yes | - | - |
| Instant Messaging | Yes | Yes | - | Yes |
| MMS | Yes | Yes | - | Yes |
| Text Messaging Templates | Yes | Yes | - | - |
| Music | ||||
| Headphone Jack (3.5mm) | - | Yes | - | - |
| Music Player | Yes | Yes | - | Yes |
| Productivity | ||||
| Alarm | Yes | Yes | Yes | Yes |
| Calculator | Yes | Yes | Yes | - |
| Calendar | Yes | Yes | Yes | Yes |
| To-Do List | Yes | - | Yes | Yes |
| Voice Memo | Yes | Yes | Yes | - |
| Software | ||||
| BREW | - | Yes | - | - |
| Games | Yes | Yes | Yes | Yes |
| Java (J2ME) | Yes | - | Yes | Yes |
| Voice | ||||
| Headset Jack (2.5 mm) | - | - | Yes | Yes |
| Push-To-Talk | Yes | - | Yes | - |
| Speaker Phone | Yes | Yes | Yes | Yes |
| Samsung SGH-A657 | Motorola Rival A455 | Samsung VI-A820 | Motorola Sidekick Slide | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-A657 | Motorola Rival A455 | Samsung VI-A820 | Motorola Sidekick Slide |
