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| Phone | Samsung SGH-A157 | Pantech Matrix Pro C820 | Samsung M400 | Motorola ROKR E2 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
1.8" diag. 4 : 3 |
2.4" diag. 4 : 3 |
2.4" diag. 4 : 3 |
? |
| Display Resolution & Type |
128 x 160 pixels (~116 ppi) LCD (TFT/TFD) |
240 x 320 pixels (~167 ppi) LCD (TFT/TFD) |
240 x 320 pixels (~167 ppi) LCD (TFT/TFD) |
240 x 320 pixels LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? | ? |
| Battery | 800 mAh | 1,320 mAh | 1,000 mAh | ? |
| Processor | ? | 528 MHz ARM 11 | 400 MHz Qualcomm QSC6155 | ? |
| RAM | ? | ? | 128 MB | ? |
| Storage | 256 MB | ? raw hardware | 256 MB | ? raw hardware |
| Main Camera | - | 2 megapixel | 1 megapixel | 1 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | - | QCIF (176 x 144) | - | ? |
| Front Camera | - | - | - | - |
| Weight |
2.99 oz (85g) |
5.34 oz (151g) |
3.7 oz (105g) |
3.77 oz (107g) |
| Dimensions |
3.83" x 1.84" x 0.65" (97 x 47 x 16.5 mm) |
4.2" x 2" x 0.9" (107 x 51 x 22.9 mm) |
3.8" x 1.9" x 0.7" (97 x 48 x 17.8 mm) |
4.17" x 1.95" x 0.71" (106 x 50 x 18 mm) |
| Form Factor | Clamshell | Slide | Clamshell | Slab |
| Platform / OS | (proprietary) | Windows Mobile Standard | (proprietary) | (proprietary) |
| Network Bands |
WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
CDMA: 800, 850, 1900 |
GSM: 900, 1800, 1900 |
| Data Technology | ? | HSDPA 3.6 | 1xRTT | EDGE |
| Features | ||||
| GPS / Location | Yes | n/a | Yes | - |
| Accessibility | ||||
| Adjustable Text Size | Yes | n/a | Yes | - |
| Hearing Aid Compatible | Yes | - | Yes | - |
| Multiple Languages | Yes | n/a | Yes | Yes |
| TTY/TDD (Digital) | Yes | Yes | Yes | - |
| Alerts | ||||
| Extra Display | - | - | Yes | - |
| Ringer Profiles | Yes | Yes | - | Yes |
| Connectivity | ||||
| Bluetooth | - | Yes | Yes | Yes |
| USB |
Yes Micro-USB |
Yes |
Yes Micro-USB |
Yes |
| Contacts | ||||
| Picture ID | Yes | n/a | Yes | Yes |
| Ringer ID | Yes | n/a | Yes | Yes |
| Voice Dialing | - | n/a | Yes | 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 | - | n/a | - | Yes |
| WAP / Web Browser | Yes | n/a | Yes | Yes |
| Input | ||||
| Predictive Text Entry | Yes | n/a | Yes | Yes |
| Side Keys | - | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | Yes | - | - |
| Memory | ||||
| Memory Card Slot | - | Yes | - | Yes |
| Messaging | ||||
| Email Client | - | n/a | - | Yes |
| Instant Messaging | - | n/a | - | - |
| MMS | Yes | n/a | Yes | Yes |
| Text Messaging Templates | Yes | n/a | Yes | Yes |
| Music | ||||
| FM Radio | - | - | - | Yes |
| Headphone Jack (3.5mm) | - | - | Yes | Yes |
| Music Player | - | n/a | - | Yes |
| Productivity | ||||
| Alarm | Yes | n/a | Yes | Yes |
| Calculator | Yes | n/a | Yes | Yes |
| Calendar | Yes | n/a | Yes | Yes |
| To-Do List | Yes | n/a | - | Yes |
| Voice Memo | Yes | n/a | Yes | Yes |
| Software | ||||
| Games | - | n/a | Yes | Yes |
| Java (J2ME) | - | n/a | - | Yes |
| Voice | ||||
| Speaker Phone | Yes | Yes | Yes | Yes |
| Samsung SGH-A157 | Pantech Matrix Pro C820 | Samsung M400 | Motorola ROKR E2 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-A157 | Pantech Matrix Pro C820 | Samsung M400 | Motorola ROKR E2 |
