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| Phone | Samsung SGH-X640 | Samsung Galaxy Ring / Prevail 2 | Nokia E66 |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size | ? |
4" diag. 5 : 3 |
2.4" diag. 4 : 3 |
| Display Resolution & Type |
128 x 160 pixels LCD (TFT/TFD) |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
240 x 320 pixels (~167 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | ? |
| Battery | 800 mAh | 1,750 mAh | 1,000 mAh |
| Processor | ? | 1.4 GHz Qualcomm Snapdragon S2 MSM8655 | ? |
| RAM | ? | 1 GB | ? |
| Storage | ? raw hardware | 4 GB | ? raw hardware |
| Main Camera | Yes | 5 megapixel | 3 megapixel |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | - | 720p HD | QVGA (320 x 240) |
| Front Camera | - | 1 megapixel | - |
| Weight |
3 oz (85g) |
3.4 oz (96g) |
4.27 oz (121g) |
| Dimensions |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
4.83" x 2.48" x 0.47" (123 x 63 x 11.9 mm) |
4.21" x 1.93" x 0.51" (107 x 49 x 13 mm) |
| Form Factor | Clamshell | Slab | Slide |
| Platform / OS | (proprietary) | Android | S60 (Symbian) |
| Network Bands |
GSM: 900, 1800, 1900 |
CDMA: 800, 850, 1900 |
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| Data Technology | GPRS | EVDO rA | HSDPA 3.6 |
| Features | |||
| GPS / Location | - | n/a | n/a |
| Accessibility | |||
| Adjustable Text Size | - | n/a | n/a |
| Hearing Aid Compatible | - |
Yes M4 (very compatible) |
- |
| Multiple Languages | Yes | n/a | n/a |
| TTY/TDD (Digital) | - | Yes | - |
| Alerts | |||
| Ringer Profiles | - | - | Yes |
| Connectivity | |||
| Bluetooth | - | Yes | Yes |
| Infrared (IR) | - | - | Yes |
| USB | - | Yes |
Yes Micro-USB |
| Wi-Fi | - |
Yes 4 (802.11 a,b,g,n) |
Yes 802.11 b,g |
| Contacts | |||
| Picture ID | Yes | n/a | n/a |
| Ringer ID | Yes | n/a | n/a |
| Voice Dialing | - | n/a | n/a |
| Customization | |||
| Custom Graphics | Yes | n/a | n/a |
| Custom Ringtones | Yes | n/a | n/a |
| Real-Music Ringers | - | n/a | n/a |
| Data & Network | |||
| Data Tethering | - | n/a | n/a |
| WAP / Web Browser | Yes | n/a | n/a |
| Input | |||
| Predictive Text Entry | Yes | n/a | n/a |
| Side Keys | Yes | Yes | Yes |
| Touch Screen | - |
Yes Capacitive |
- |
| Memory | |||
| Memory Card Slot | - | Yes | Yes |
| Messaging | |||
| Email Client | - | n/a | n/a |
| EMS / Picture Messaging | Yes | n/a | n/a |
| Instant Messaging | - | n/a | n/a |
| MMS | Yes | n/a | n/a |
| Text Messaging Templates | Yes | n/a | n/a |
| Music | |||
| FM Radio | - | - | Yes |
| Headphone Jack (3.5mm) | - | Yes | - |
| Music Player | - | n/a | n/a |
| Photo & Video | |||
| DLNA | - | Yes | - |
| Video Calling | - | n/a | n/a |
| Productivity | |||
| Alarm | Yes | n/a | n/a |
| Calculator | Yes | n/a | n/a |
| Calendar | Yes | n/a | n/a |
| To-Do List | Yes | n/a | n/a |
| Voice Memo | Yes | n/a | n/a |
| Software | |||
| Games | Yes | n/a | n/a |
| Java (J2ME) | Yes | n/a | n/a |
| Voice | |||
| Headset Jack (2.5 mm) | Yes | n/a | n/a |
| Speaker Phone | Yes | Yes | Yes |
| * Some versions only | |||
| Samsung SGH-X640 | Samsung Galaxy Ring / Prevail 2 | Nokia E66 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-X640 | Samsung Galaxy Ring / Prevail 2 | Nokia E66 |
