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| Phone | Samsung SGH-X640 | Samsung Galaxy S6 (GSM) | Casio G'zOne Boulder | Samsung SCH-A790 / SCH-A795 / IP-A790 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? |
5.1" diag. 16 : 9 |
2" diag. 4 : 3 |
? |
| Display Resolution & Type |
128 x 160 pixels LCD (TFT/TFD) |
1440 x 2560 pixels (~576 ppi) AMOLED |
240 x 320 pixels (~200 ppi) LCD (TFT/TFD) |
176 x 220 pixels LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | ? | ? |
| Battery | 800 mAh | 2,550 mAh | 810 mAh | ? |
| Processor | ? | 2.1 GHz Samsung Exynos 7420 | ? | ? |
| RAM | ? | 3 GB | ? | ? |
| Storage | ? raw hardware | 32 GB * | ? raw hardware | ? raw hardware |
| Main Camera | Yes | 16 megapixel | 1 megapixel | Yes |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | - | 4K UHD | ? | - |
| Front Camera | - | 5 megapixel | - | - |
| Weight |
3 oz (85g) |
4.87 oz (138g) |
4.9 oz (139g) |
4.2 oz (119g) |
| Dimensions |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
5.65" x 2.78" x 0.27" (143 x 71 x 6.8 mm) |
3.9" x 2" x 0.9" (99 x 51 x 22.9 mm) |
3.4" x 2" x 1" (86 x 51 x 25.4 mm) |
| Form Factor | Clamshell | Slab | Clamshell | Clamshell |
| Platform / OS | (proprietary) | Android | (proprietary) | (proprietary) |
| Network Bands |
GSM: 900, 1800, 1900 |
CDMA: 850, 1900 |
CDMA: 850, 1900 GSM: 900, 1800 |
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| Data Technology | GPRS | LTE (Cat 6) | EVDO rA | 1xRTT |
| Features | ||||
| Fingerprint Reader | - | Yes | - | - |
| Flashlight | - | Yes | Yes | - |
| GPS / Location | - | n/a | Yes | Yes |
| Ruggedized | - | - | Yes | - |
| VR-ready | - | Yes | - | - |
| Water-Resistant | - | - | Yes | - |
| Accessibility | ||||
| Hearing Aid Compatible | - |
Yes M3, T3 (mostly tele-coil compatible) |
Yes M4, T4 (very tele-coil compatible) |
- |
| Multiple Languages | Yes | n/a | Yes | Yes |
| TTY/TDD (Digital) | - | Yes | Yes | Yes |
| Alerts | ||||
| Extra Display | - | - | Yes | Yes |
| Ringer Profiles | - | - | - | Yes |
| Connectivity | ||||
| Bluetooth | - | Yes | Yes | - |
| Infrared (IR) | - | Yes | - | - |
| MirrorLink | - | Yes | - | - |
| NFC | - | Yes | - | - |
| USB | - |
Yes Micro-USB |
Yes | - |
| Wi-Fi | - |
Yes 5 (802.11 a,ac,b,g,n) |
- | - |
| Contacts | ||||
| Picture ID | Yes | n/a | Yes | Yes |
| Ringer ID | Yes | n/a | Yes | - |
| Voice Dialing | - | n/a | Yes | Yes |
| Customization | ||||
| Changeable Body Plates | - | - | Yes | - |
| Custom Graphics | Yes | n/a | Yes | Yes |
| Custom Ringtones | Yes | n/a | Yes | Yes |
| Data & Network | ||||
| Data Tethering | - | n/a | Yes | Yes |
| WAP / Web Browser | Yes | n/a | Yes | Yes |
| Input | ||||
| Predictive Text Entry | Yes | n/a | Yes | Yes |
| Side Keys | Yes | Yes | Yes | Yes |
| Touch Screen | - |
Yes Capacitive |
- | - |
| Memory | ||||
| Memory Card Slot | - | - | Yes | - |
| Messaging | ||||
| EMS / Picture Messaging | Yes | n/a | Yes | - |
| MMS | Yes | n/a | Yes | Yes |
| Text Messaging Templates | Yes | n/a | Yes | Yes |
| Music | ||||
| Headphone Jack (3.5mm) | - | Yes | - | - |
| Music Player | - | n/a | Yes | - |
| Photo & Video | ||||
| DLNA | - | Yes | - | - |
| Miracast | - | Yes | - | - |
| TV Output | - | Yes | - | - |
| Power | ||||
| Fast Charging | - | Yes | - | - |
| Wireless Charging | - | Yes | - | - |
| Productivity | ||||
| Alarm | Yes | n/a | Yes | Yes |
| Calculator | Yes | n/a | Yes | Yes |
| Calendar | Yes | n/a | Yes | Yes |
| To-Do List | Yes | n/a | - | Yes |
| Voice Memo | Yes | n/a | Yes | Yes |
| Software | ||||
| BREW | - | n/a | Yes | Yes |
| Games | Yes | n/a | Yes | Yes |
| Java (J2ME) | Yes | n/a | - | - |
| Voice | ||||
| HD Voice | - | Yes | - | - |
| Headset Jack (2.5 mm) | Yes | n/a | - | Yes |
| Push-To-Talk | - | - | Yes | - |
| Speaker Phone | Yes | Yes | Yes | - |
| Samsung SGH-X640 | Samsung Galaxy S6 (GSM) | Casio G'zOne Boulder | Samsung SCH-A790 / SCH-A795 / IP-A790 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-X640 | Samsung Galaxy S6 (GSM) | Casio G'zOne Boulder | Samsung SCH-A790 / SCH-A795 / IP-A790 |
