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| Phone | Samsung SGH-X640 | Sharp Sidekick LX 2007 | Apple iPhone 4 (GSM) | LG AX-490 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? |
3" diag. 5 : 3 |
3.5" diag. 5 : 3 |
? |
| Display Resolution & Type |
128 x 160 pixels LCD (TFT/TFD) |
400 x 240 pixels (~155 ppi) LCD (TFT/TFD) |
640 x 960 pixels (~330 ppi) LCD (TFT/TFD) |
128 x 160 pixels LCD (TFT/TFD) |
| Display Refresh | ? | ? | 60 Hz | ? |
| Battery | 800 mAh | 1,540 mAh | ? | 1,100 mAh |
| Processor | ? | 200 MHz OMAP 331 | Apple A4 | ? |
| RAM | ? | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | 32 GB * | ? raw hardware |
| Main Camera | Yes | 1 megapixel | 5 megapixel | Yes |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | - | ? | 720p HD | - |
| Front Camera | - | - | Yes | - |
| Weight |
3 oz (85g) |
5.7 oz (162g) |
4.8 oz (136g) |
3.79 oz (107g) |
| Dimensions |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
5.12" x 2.36" x 0.7" (130 x 60 x 17.9 mm) |
4.5" x 2.31" x 0.37" (114 x 59 x 9.4 mm) |
3.74" x 1.92" x 1" (95 x 49 x 25.4 mm) |
| Form Factor | Clamshell | Swivel | Slab | Clamshell |
| Platform / OS | (proprietary) | (proprietary) | iOS | (proprietary) |
| Network Bands |
GSM: 900, 1800, 1900 |
GSM: 850, 900, 1800, 1900 |
WCDMA: 1, 2, 5, 8 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 AMPS: 850 |
| Data Technology | GPRS | EDGE | HSPA 7.2 | 1xRTT |
| Features | ||||
| Flashlight | - | Yes | - | - |
| GPS / Location | - | - | n/a | Yes |
| Accessibility | ||||
| Adjustable Text Size | - | Yes | n/a | - |
| Hearing Aid Compatible | - |
Yes M3 (mostly compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
Yes M3 (mostly compatible) |
| Multiple Languages | Yes | - | n/a | Yes |
| TTY/TDD (Digital) | - | - | Yes | Yes |
| Alerts | ||||
| Extra Display | - | - | - | Yes |
| Ringer Profiles | - | Yes | - | - |
| Connectivity | ||||
| Bluetooth | - | Yes | Yes | Yes |
| Mobile Hotspot | - | - | n/a | - |
| USB | - | Yes | Yes | Yes |
| Wi-Fi | - | - |
Yes 4 (802.11 b,g,n) |
- |
| Contacts | ||||
| Picture ID | Yes | Yes | n/a | Yes |
| Ringer ID | Yes | Yes | n/a | Yes |
| Voice Dialing | - | - | n/a | Yes |
| Customization | ||||
| Custom Graphics | Yes | Yes | n/a | Yes |
| Custom Ringtones | Yes | Yes | n/a | Yes |
| Real-Music Ringers | - | Yes | n/a | Yes |
| Data & Network | ||||
| Data Tethering | - | - | n/a | Yes |
| WAP / Web Browser | Yes | Yes | n/a | Yes |
| Input | ||||
| Predictive Text Entry | Yes | - | n/a | - |
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | Yes | - | Yes |
| Touch Screen | - | - |
Yes Capacitive |
- |
| Memory | ||||
| Memory Card Slot | - | Yes | - | - |
| Messaging | ||||
| Email Client | - | Yes | n/a | - |
| EMS / Picture Messaging | Yes | - | n/a | - |
| Instant Messaging | - | Yes | n/a | - |
| MMS | Yes | Yes | n/a | Yes |
| Text Messaging Templates | Yes | Yes | n/a | Yes |
| Music | ||||
| Headphone Jack (3.5mm) | - | Yes | Yes | - |
| Music Player | - | Yes | n/a | - |
| Stereo Speakers | - | - | - | Yes |
| Photo & Video | ||||
| TV Output | - | - | Yes | - |
| Productivity | ||||
| Alarm | Yes | Yes * | n/a | Yes |
| Calculator | Yes | - | n/a | Yes |
| Calendar | Yes | Yes | n/a | Yes |
| To-Do List | Yes | Yes | n/a | - |
| Voice Memo | Yes | - | n/a | Yes |
| Software | ||||
| BREW | - | - | n/a | Yes |
| Games | Yes | Yes | n/a | Yes |
| Java (J2ME) | Yes | Yes | n/a | - |
| Voice | ||||
| Headset Jack (2.5 mm) | Yes | - | n/a | Yes |
| Speaker Phone | Yes | Yes | Yes | Yes |
| * Some versions only | ||||
| Samsung SGH-X640 | Sharp Sidekick LX 2007 | Apple iPhone 4 (GSM) | LG AX-490 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-X640 | Sharp Sidekick LX 2007 | Apple iPhone 4 (GSM) | LG AX-490 |
