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| Phone | Samsung SGH-E640 | Motorola Krave ZN4 | Motorola ROKR E2 |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size | ? |
2.8" diag. 5 : 3 |
? |
| Display Resolution & Type |
176 x 220 pixels LCD (TFT/TFD) |
240 x 400 pixels (~167 ppi) LCD (TFT/TFD) |
240 x 320 pixels LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? |
| Battery | 800 mAh | 950 mAh | ? |
| Processor | ? | ? | ? |
| RAM | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | 1 megapixel | 2 megapixel | 1 megapixel |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | QCIF (176 x 144) | QVGA (320 x 240) | ? |
| Front Camera | - | - | - |
| Weight |
3.17 oz (90g) |
4.52 oz (128g) |
3.77 oz (107g) |
| Dimensions |
3.37" x 1.78" x 0.93" (86 x 45 x 23.6 mm) |
4.12" x 2.01" x 0.74" (105 x 51 x 18.8 mm) |
4.17" x 1.95" x 0.71" (106 x 50 x 18 mm) |
| Form Factor | Clamshell | Flip | Slab |
| Platform / OS | (proprietary) | (proprietary) | (proprietary) |
| Network Bands |
GSM: 900, 1800, 1900 |
CDMA: 850, 1900 |
GSM: 900, 1800, 1900 |
| Data Technology | GPRS | EVDO r0 | EDGE |
| Features | |||
| GPS / Location | - | Yes | - |
| Accessibility | |||
| Hearing Aid Compatible | - |
Yes M4, T4 (very tele-coil compatible) |
- |
| Multiple Languages | Yes | Yes | Yes |
| TTY/TDD (Digital) | - | 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 |
| Ringer ID | Yes | Yes | Yes |
| Voice Dialing | - | Yes | Yes |
| Customization | |||
| Custom Graphics | Yes | Yes | Yes |
| Custom Ringtones | Yes | Yes | Yes |
| Real-Music Ringers | Yes | Yes | - |
| Data & Network | |||
| Data Tethering | - | Yes | Yes |
| WAP / Web Browser | Yes | Yes | Yes |
| Input | |||
| Predictive Text Entry | Yes | Yes | Yes |
| Side Keys | Yes | Yes | Yes |
| Touch Screen | - | Yes | - |
| Memory | |||
| Memory Card Slot | - | Yes | Yes |
| Messaging | |||
| Email Client | Yes | Yes | Yes |
| EMS / Picture Messaging | Yes | Yes | - |
| Instant Messaging | - | Yes | - |
| MMS | Yes | Yes | Yes |
| Text Messaging Templates | Yes | Yes | Yes |
| Music | |||
| FM Radio | - | - | Yes |
| Headphone Jack (3.5mm) | - | Yes | Yes |
| Music Player | Yes | Yes | Yes |
| Productivity | |||
| Alarm | Yes | Yes | Yes |
| Calculator | Yes | Yes | Yes |
| Calendar | Yes | Yes | Yes |
| To-Do List | Yes | - | Yes |
| Voice Memo | Yes | Yes | Yes |
| Software | |||
| BREW | - | Yes | - |
| Games | Yes | Yes | Yes |
| Java (J2ME) | Yes | - | Yes |
| Voice | |||
| Speaker Phone | Yes | Yes | Yes |
| Samsung SGH-E640 | Motorola Krave ZN4 | Motorola ROKR E2 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-E640 | Motorola Krave ZN4 | Motorola ROKR E2 |
