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| Phone | Samsung SGH-X640 | Sony Ericsson S710a | Sony Ericsson Xperia X10 mini (2010) | Nokia Lumia 900 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Not yet released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? | ? |
2.6" diag. 4 : 3 |
4.3" diag. 5 : 3 |
| Display Resolution & Type |
128 x 160 pixels LCD (TFT/TFD) |
240 x 320 pixels LCD (TFT/TFD) |
240 x 320 pixels (~157 ppi) LCD (TFT/TFD) |
480 x 800 pixels (~217 ppi) AMOLED |
| Display Refresh | ? | ? | 60 Hz | ? |
| Battery | 800 mAh | 780 mAh | ? | 1,830 mAh |
| Processor | ? | ? | 600 MHz Qualcomm S1 MSM7227 | 1.4 GHz Qualcomm S2 APQ8055 |
| RAM | ? | ? | ? | 512 MB |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | 16 GB |
| Main Camera | Yes | 1 megapixel | 5 megapixel | 8 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | - | QCIF (176 x 144) | VGA (640 x 480) | 720p HD |
| Front Camera | - | - | - | 1 megapixel |
| Weight |
3 oz (85g) |
4.83 oz (137g) |
3.11 oz (88g) |
5.6 oz (159g) |
| Dimensions |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
4.23" x 1.93" x 0.96" (107 x 49 x 24.4 mm) |
3.26" x 1.97" x 0.64" (83 x 50 x 16.3 mm) |
5.03" x 2.7" x 0.45" (128 x 69 x 11.4 mm) |
| Form Factor | Clamshell | Swivel | Slab | Slab |
| Platform / OS | (proprietary) | (proprietary) | Android | Windows |
| Network Bands |
GSM: 900, 1800, 1900 |
GSM: 850, 1800, 1900 |
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| Data Technology | GPRS | EDGE | HSPA 7.2 | LTE (Cat 3) |
| Features | ||||
| GPS / Location | - | - | n/a | n/a |
| Accessibility | ||||
| Hearing Aid Compatible | - | - | - | Yes |
| Multiple Languages | Yes | Yes | n/a | n/a |
| TTY/TDD (Digital) | - | Yes | - | Yes |
| Alerts | ||||
| Ringer Profiles | - | Yes | - | - |
| Connectivity | ||||
| Bluetooth | - |
Yes Classic Audio |
Yes Classic Audio |
Yes |
| Infrared (IR) | - | Yes | - | - |
| Mobile Hotspot | - | - | n/a | n/a |
| USB | - | Yes |
Yes Micro-USB |
Yes Micro-USB |
| Wi-Fi | - | - |
Yes 802.11 b,g |
Yes |
| Contacts | ||||
| Picture ID | Yes | Yes | n/a | n/a |
| Ringer ID | Yes | Yes | n/a | n/a |
| Voice Dialing | - | Yes | n/a | n/a |
| Customization | ||||
| Custom Graphics | Yes | Yes | n/a | n/a |
| Custom Ringtones | Yes | Yes | n/a | n/a |
| Real-Music Ringers | - | - | n/a | n/a |
| Data & Network | ||||
| Data Tethering | - | Yes | n/a | n/a |
| WAP / Web Browser | Yes | Yes | n/a | n/a |
| Input | ||||
| Predictive Text Entry | Yes | Yes | n/a | n/a |
| Side Keys | Yes | Yes | Yes | Yes |
| Touch Screen | - | - | Yes | Yes |
| Memory | ||||
| Memory Card Slot | - | Yes | Yes | - |
| Messaging | ||||
| Email Client | - | Yes | n/a | n/a |
| EMS / Picture Messaging | Yes | Yes | n/a | n/a |
| Instant Messaging | - | - | n/a | n/a |
| MMS | Yes | Yes | n/a | n/a |
| Text Messaging Templates | Yes | Yes | n/a | n/a |
| Music | ||||
| FM Radio | - | - | Yes | Yes |
| Headphone Jack (3.5mm) | - | - | Yes | Yes |
| Music Player | - | Yes | n/a | n/a |
| Productivity | ||||
| Alarm | Yes | Yes | n/a | n/a |
| Calculator | Yes | Yes | n/a | n/a |
| Calendar | Yes | Yes | n/a | n/a |
| To-Do List | Yes | Yes | n/a | n/a |
| Voice Memo | Yes | Yes | n/a | n/a |
| Software | ||||
| Games | Yes | Yes | n/a | n/a |
| Java (J2ME) | Yes | Yes | n/a | n/a |
| Voice | ||||
| Headset Jack (2.5 mm) | Yes | - | n/a | n/a |
| Speaker Phone | Yes | Yes | Yes | Yes |
| Samsung SGH-X640 | Sony Ericsson S710a | Sony Ericsson Xperia X10 mini (2010) | Nokia Lumia 900 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-X640 | Sony Ericsson S710a | Sony Ericsson Xperia X10 mini (2010) | Nokia Lumia 900 |
