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| Phone | Samsung SGH-X640 | Nokia 1661 | Nokia 2651 | Nokia Lumia 920 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? |
1.8" diag. 4 : 3 |
? |
4.5" diag. 5 : 3 |
| Display Resolution & Type |
128 x 160 pixels LCD (TFT/TFD) |
128 x 160 pixels (~114 ppi) LCD (TFT/TFD) |
128 x 128 pixels LCD (STN) |
768 x 1280 pixels (~332 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? | ? |
| Battery | 800 mAh | 860 mAh | 760 mAh | 2,000 mAh |
| Processor | ? | ? | ? | 1.5 GHz Qualcomm Snapdragon S4 |
| RAM | ? | ? | ? | 1 GB |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | 32 GB |
| Main Camera | Yes | - | - | 8 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | - | - | - | 1080p HD |
| Front Camera | - | - | - | 1 megapixel |
| Weight |
3 oz (85g) |
2.9 oz (82g) |
3.4 oz (96g) |
6.53 oz (185g) |
| Dimensions |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
4.25" x 1.8" x 0.53" (108 x 46 x 13.5 mm) |
3.35" x 1.81" x 0.9" (85 x 46 x 22.9 mm) |
5.12" x 2.79" x 0.42" (130 x 71 x 10.7 mm) |
| Form Factor | Clamshell | Slab | Clamshell | Slab |
| Platform / OS | (proprietary) | (proprietary) | (proprietary) | Windows |
| Network Bands |
GSM: 900, 1800, 1900 |
GSM: 850, 1900 |
GSM: 850, 1900 |
4G LTE: 2, 4, 5, 17 WCDMA: 1, 2, 4, 5, 8 GSM: 850, 900, 1800, 1900 |
| Data Technology | GPRS | - | GPRS | LTE (Cat 3) |
| Features | ||||
| Flashlight | - | Yes | - | - |
| GPS / Location | - | - | - | n/a |
| Accessibility | ||||
| Adjustable Text Size | - | - | - | n/a |
| Hearing Aid Compatible | - | - | - |
Yes M3, T3 (mostly tele-coil compatible) |
| Multiple Languages | Yes | - | Yes | n/a |
| TTY/TDD (Digital) | - | - | - | Yes |
| Alerts | ||||
| Ringer Profiles | - | Yes | - | - |
| Connectivity | ||||
| Bluetooth | - | - | - | Yes |
| Mobile Hotspot | - | - | - | n/a |
| NFC | - | - | - | Yes |
| USB | - | - | - |
Yes Micro-USB |
| Wi-Fi | - | - | - |
Yes 4 (802.11 a,b,g,n) |
| Contacts | ||||
| Picture ID | Yes | - | - | n/a |
| Ringer ID | Yes | - | - | n/a |
| Voice Dialing | - | - | - | n/a |
| Customization | ||||
| Custom Graphics | Yes | - | Yes | n/a |
| Custom Ringtones | Yes | - | Yes | n/a |
| Real-Music Ringers | - | - | - | n/a |
| Data & Network | ||||
| WAP / Web Browser | Yes | - | Yes | n/a |
| Input | ||||
| Predictive Text Entry | Yes | Yes | Yes | n/a |
| Side Keys | Yes | - | - | Yes |
| Touch Screen | - | - | - |
Yes Capacitive |
| Messaging | ||||
| Email Client | - | - | Yes | n/a |
| EMS / Picture Messaging | Yes | - | Yes | n/a |
| Instant Messaging | - | - | - | n/a |
| MMS | Yes | - | Yes | n/a |
| Text Messaging Templates | Yes | - | - | n/a |
| Music | ||||
| FM Radio | - | Yes | - | - |
| Headphone Jack (3.5mm) | - | - | - | Yes |
| Music Player | - | - | - | n/a |
| Power | ||||
| Wireless Charging | - | - | - | Yes |
| Productivity | ||||
| Alarm | Yes | Yes | Yes | n/a |
| Calculator | Yes | Yes | Yes | n/a |
| Calendar | Yes | Yes | Yes | n/a |
| To-Do List | Yes | - | - | n/a |
| Voice Memo | Yes | Yes | - | n/a |
| Software | ||||
| Games | Yes | Yes | Yes | n/a |
| Java (J2ME) | Yes | - | Yes | n/a |
| Voice | ||||
| Headset Jack (2.5 mm) | Yes | Yes | - | n/a |
| Speaker Phone | Yes | Yes | - | Yes |
| Samsung SGH-X640 | Nokia 1661 | Nokia 2651 | Nokia Lumia 920 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-X640 | Nokia 1661 | Nokia 2651 | Nokia Lumia 920 |
