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| Phone | Samsung SCH-A990 | Sharp Sidekick LX 2007 | Samsung Galaxy S II, Epic 4G Touch | Amazon Fire |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? |
3" diag. 5 : 3 |
4.5" diag. 5 : 3 |
4.7" diag. 16 : 9 |
| Display Resolution & Type |
240 x 320 pixels LCD (TFT/TFD) |
400 x 240 pixels (~155 ppi) LCD (TFT/TFD) |
480 x 800 pixels (~206 ppi) AMOLED |
720 x 1280 pixels (~312 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | 60 Hz | ? |
| Battery | 1,000 mAh | 1,540 mAh | 1,800 mAh | 2,400 mAh |
| Processor | ? | 200 MHz OMAP 331 | 1.2 GHz Samsung Exynos C210 dual-core | 2.2 GHz Qualcomm Snapdragon 800 |
| RAM | ? | ? | ? | 2 GB |
| Storage | ? raw hardware | ? raw hardware | 16 GB | 32 GB * |
| Main Camera | 3 megapixel | 1 megapixel | 8 megapixel | 13 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | ? | ? | 1080p HD | 1080p HD |
| Front Camera | - | - | 2 megapixel | 2 megapixel |
| Weight |
4.4 oz (125g) |
5.7 oz (162g) |
4.55 oz (129g) |
5.64 oz (160g) |
| Dimensions |
3.8" x 1.88" x 0.82" (97 x 48 x 20.8 mm) |
5.12" x 2.36" x 0.7" (130 x 60 x 17.9 mm) |
5.1" x 2.7" x 0.38" (130 x 69 x 9.6 mm) |
5.5" x 2.6" x 0.35" (140 x 66 x 8.9 mm) |
| Form Factor | Clamshell | Swivel | Slab | Slab |
| Platform / OS | (proprietary) | (proprietary) | Android | (proprietary) |
| Network Bands |
CDMA: 850, 1900 |
GSM: 850, 900, 1800, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 17 WCDMA: 1, 2, 4, 5, 8 GSM: 850, 900, 1800, 1900 |
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| Data Technology | EVDO r0 | EDGE | WiMAX | LTE (Cat 4) |
| Features | ||||
| Flashlight | Yes | Yes | - | Yes |
| GPS / Location | Yes | - | n/a | Yes |
| Accessibility | ||||
| Adjustable Text Size | - | Yes | n/a | - |
| Hearing Aid Compatible | Yes | Yes | Yes | Yes |
| Multiple Languages | Yes | - | n/a | Yes |
| TTY/TDD (Digital) | Yes | - | Yes | Yes |
| Alerts | ||||
| Extra Display | Yes | - | - | - |
| Ringer Profiles | - | Yes | - | - |
| Connectivity | ||||
| Bluetooth |
Yes Classic Audio |
Yes Classic Audio |
Yes Classic Audio |
Yes Classic Audio |
| Mobile Hotspot | - | - | n/a | Yes |
| NFC | - | - | - | Yes |
| USB | Yes | Yes |
Yes Micro-USB |
Yes Micro-USB |
| Wi-Fi | - | - |
Yes 4 (802.11 a,b,g,n) |
Yes 5 (802.11 a,ac,b,g,n) |
| Contacts | ||||
| Picture ID | Yes | Yes | n/a | Yes |
| Ringer ID | Yes | Yes | n/a | Yes |
| Voice Dialing | Yes | - | n/a | Yes |
| Customization | ||||
| Custom Graphics | Yes | Yes | n/a | - |
| Custom Ringtones | Yes | Yes | n/a | Yes |
| Real-Music Ringers | Yes | Yes | n/a | - |
| Data & Network | ||||
| Data Tethering | Yes | - | n/a | Yes |
| WAP / Web Browser | Yes | Yes | n/a | Yes |
| Input | ||||
| Predictive Text Entry | Yes | - | n/a | Yes |
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | Yes | - | - |
| Touch Screen | - | - | Yes | Yes |
| Memory | ||||
| Memory Card Slot | Yes | Yes | Yes | - |
| Messaging | ||||
| Email Client | - | Yes | n/a | Yes |
| 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 | Yes |
| Music Player | Yes | Yes | n/a | Yes |
| Stereo Speakers | Yes | - | - | Yes |
| Photo & Video | ||||
| DLNA | - | - | Yes | - |
| Miracast | - | - | - | Yes |
| TV Output | Yes | - | Yes | Yes |
| Productivity | ||||
| Alarm | Yes | Yes * | n/a | Yes |
| Calculator | Yes | - | n/a | Yes |
| Calendar | Yes | Yes | n/a | Yes |
| To-Do List | - | Yes | n/a | - |
| Voice Memo | Yes | - | n/a | Yes |
| Software | ||||
| BREW | Yes | - | n/a | - |
| Games | Yes | Yes | n/a | Yes |
| Java (J2ME) | - | Yes | n/a | - |
| Voice | ||||
| HD Voice | - | - | - | Yes |
| Speaker Phone | Yes | Yes | Yes | Yes |
| * Some versions only | ||||
| Samsung SCH-A990 | Sharp Sidekick LX 2007 | Samsung Galaxy S II, Epic 4G Touch | Amazon Fire | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SCH-A990 | Sharp Sidekick LX 2007 | Samsung Galaxy S II, Epic 4G Touch | Amazon Fire |
