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| Phone | Samsung SGH-X640 | Sony Ericsson Xperia X10 mini pro (2010) | Sony Ericsson K850 | Sanyo RL-4930 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? |
2.6" diag. 4 : 3 |
2.2" diag. 4 : 3 |
? |
| Display Resolution & Type |
128 x 160 pixels LCD (TFT/TFD) |
240 x 320 pixels (~154 ppi) LCD (TFT/TFD) |
240 x 320 pixels (~182 ppi) LCD (TFT/TFD) |
128 x 112 pixels LCD (STN) |
| Display Refresh | ? | 60 Hz | ? | ? |
| Battery | 800 mAh | 930 mAh | ? | 1,700 mAh |
| Processor | ? | 600 MHz Qualcomm S1 MSM7227 | ? | ? |
| RAM | ? | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | Yes | 5 megapixel | 5 megapixel | - |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | - | VGA (640 x 480) | ? | - |
| Front Camera | - | - | - | - |
| Weight |
3 oz (85g) |
4.2 oz (119g) |
4.2 oz (119g) |
4.4 oz (125g) |
| Dimensions |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
3.5" x 2" x 0.7" (89 x 51 x 17.8 mm) |
4" x 1.9" x 0.7" (102 x 48 x 17.8 mm) |
4.5" x 2" x 1" (114 x 51 x 25.4 mm) |
| Form Factor | Clamshell | Slide | Slab | Slab |
| Platform / OS | (proprietary) | Android | (proprietary) | (proprietary) |
| Network Bands |
GSM: 900, 1800, 1900 |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 AMPS: 850 |
| Data Technology | GPRS | HSPA 7.2 | HSDPA 3.6 | 1xRTT |
| Features | ||||
| GPS / Location | - | n/a | - | Yes |
| Ruggedized | - | - | - | Yes |
| Accessibility | ||||
| Multiple Languages | Yes | n/a | Yes | Yes |
| TTY/TDD (Digital) | - | - | Yes | Yes |
| Alerts | ||||
| Ringer Profiles | - | - | Yes | - |
| Connectivity | ||||
| Bluetooth | - | Yes | Yes | - |
| USB | - |
Yes Micro-USB |
Yes | Yes |
| Wi-Fi | - | 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 | - | 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 | Yes |
| Text Keyboard, Hardware | - | Yes | - | - |
| Touch Screen | - |
Yes Capacitive |
- | - |
| Memory | ||||
| Memory Card Slot | - | Yes | Yes | - |
| Messaging | ||||
| Email Client | - | n/a | Yes | - |
| EMS / Picture Messaging | Yes | n/a | - | - |
| Instant Messaging | - | n/a | - | - |
| MMS | Yes | n/a | Yes | - |
| Text Messaging Templates | Yes | n/a | Yes | - |
| Music | ||||
| FM Radio | - | Yes | Yes | - |
| Headphone Jack (3.5mm) | - | Yes | - | - |
| Music Player | - | n/a | Yes | - |
| Photo & Video | ||||
| Video Calling | - | n/a | Yes * | - |
| Productivity | ||||
| Alarm | Yes | n/a | Yes | Yes |
| Calculator | Yes | n/a | Yes | - |
| Calendar | Yes | n/a | Yes | Yes |
| To-Do List | Yes | n/a | Yes | Yes |
| Voice Memo | Yes | n/a | Yes | Yes |
| Software | ||||
| Games | Yes | n/a | Yes | Yes |
| Java (J2ME) | Yes | n/a | Yes | Yes |
| Voice | ||||
| Call Screening | - | - | - | Yes |
| Headset Jack (2.5 mm) | Yes | n/a | - | - |
| Push-To-Talk | - | - | - | Yes |
| Speaker Phone | Yes | Yes | Yes | Yes |
| * Some versions only | ||||
| Samsung SGH-X640 | Sony Ericsson Xperia X10 mini pro (2010) | Sony Ericsson K850 | Sanyo RL-4930 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-X640 | Sony Ericsson Xperia X10 mini pro (2010) | Sony Ericsson K850 | Sanyo RL-4930 |
