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| Phone | Samsung SGH-X640 | Samsung Galaxy S III (T-Mobile) | Samsung Messager III / R570 | LG Stylo 4 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? |
4.8" diag. 16 : 9 |
2.4" diag. 4 : 3 |
6.2" diag. 18 : 9 |
| Display Resolution & Type |
128 x 160 pixels LCD (TFT/TFD) |
720 x 1280 pixels (~306 ppi) AMOLED |
240 x 320 pixels (~167 ppi) LCD (TFT/TFD) |
1080 x 2160 pixels (~390 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | ? | 60 Hz |
| Battery | 800 mAh | 2,100 mAh | 1,140 mAh | 3,300 mAh |
| Processor | ? | 1.5 GHz Qualcomm Snapdragon S4 | ? | 1.8 GHz Qualcomm Snapdragon 450 |
| RAM | ? | 2 GB | ? | 2 GB * |
| Storage | ? raw hardware | 16 GB * | ? raw hardware | 32 GB * |
| Main Camera | Yes | 8 megapixel | 1 megapixel | 13 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | - | 1080p HD | - | 1080p HD |
| Front Camera | - | 2 megapixel | - | 5 megapixel |
| Weight |
3 oz (85g) |
4.65 oz (132g) |
3.7 oz (105g) |
6.07 oz (172g) |
| Dimensions |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
5.38" x 2.78" x 0.34" (137 x 71 x 8.6 mm) |
4.59" x 2.11" x 0.59" (117 x 53 x 15 mm) |
6.31" x 3.06" x 0.33" (160 x 78 x 8.4 mm) |
| Form Factor | Clamshell | Slab | Slide | Slab |
| Platform / OS | (proprietary) | Android | (proprietary) | Android |
| Network Bands |
GSM: 900, 1800, 1900 |
CDMA: 850, 1700, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 12, 13, 14, 20, 29, 30, 38, 41, 66, 71 WCDMA: 1, 2, 4, 5 GSM: 850, 900, 1800, 1900 |
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| Data Technology | GPRS | HSPA+ 42 | 1xRTT | LTE (Cat 6) |
| Features | ||||
| Fingerprint Reader | - | - | - |
Yes stand-alone |
| Flashlight | - | Yes | - | Yes |
| GPS / Location | - | n/a | Yes | n/a |
| Accessibility | ||||
| Adjustable Text Size | - | n/a | - | n/a |
| Hearing Aid Compatible | - |
Yes M3 (mostly compatible) |
Yes M4, T3 (mostly tele-coil compatible) |
Yes M4, T3 (mostly tele-coil compatible) |
| Multiple Languages | Yes | n/a | Yes | n/a |
| TTY/TDD (Digital) | - | Yes | Yes | Yes |
| Connectivity | ||||
| Bluetooth | - | Yes | Yes | Yes |
| Mobile Hotspot | - | n/a | - | n/a |
| NFC | - | Yes | - | Yes * |
| USB | - |
Yes Micro-USB |
Yes |
Yes USB Type C |
| Wi-Fi | - | Yes | - |
Yes 5 (802.11 a,ac,b,g,n) |
| Contacts | ||||
| Picture ID | Yes | n/a | Yes | n/a |
| Ringer ID | Yes | n/a | Yes | n/a |
| Voice Dialing | - | n/a | Yes | n/a |
| Customization | ||||
| Custom Graphics | Yes | n/a | Yes | n/a |
| Custom Ringtones | Yes | n/a | Yes | n/a |
| Real-Music Ringers | - | n/a | Yes | n/a |
| Data & Network | ||||
| Data Tethering | - | n/a | - | n/a |
| WAP / Web Browser | Yes | n/a | Yes | n/a |
| Input | ||||
| Predictive Text Entry | Yes | n/a | Yes | n/a |
| Side Keys | Yes | Yes | Yes | Yes |
| Stylus | - | - | - | Yes |
| Text Keyboard, Hardware | - | - | Yes | - |
| Touch Screen | - |
Yes Capacitive |
- |
Yes Capacitive |
| Memory | ||||
| Memory Card Slot | - | Yes | Yes | Yes |
| Messaging | ||||
| Email Client | - | n/a | - | n/a |
| EMS / Picture Messaging | Yes | n/a | - | n/a |
| Instant Messaging | - | n/a | - | n/a |
| MMS | Yes | n/a | Yes | n/a |
| Text Messaging Templates | Yes | n/a | Yes | n/a |
| Music | ||||
| FM Radio | - | - | - | Yes |
| Headphone Jack (3.5mm) | - | Yes | Yes | Yes |
| Music Player | - | n/a | Yes | n/a |
| Photo & Video | ||||
| DLNA | - | Yes | - | Yes |
| TV Output | - | Yes | - | - |
| Productivity | ||||
| Alarm | Yes | n/a | Yes | n/a |
| Calculator | Yes | n/a | Yes | n/a |
| Calendar | Yes | n/a | Yes | n/a |
| To-Do List | Yes | n/a | - | n/a |
| Voice Memo | Yes | n/a | Yes | n/a |
| Software | ||||
| BREW | - | n/a | Yes | n/a |
| Games | Yes | n/a | Yes | n/a |
| Java (J2ME) | Yes | n/a | - | n/a |
| Voice | ||||
| HD Voice | - | Yes | - | Yes |
| Headset Jack (2.5 mm) | Yes | n/a | - | n/a |
| Speaker Phone | Yes | Yes | Yes | Yes |
| * Some versions only | ||||
| Samsung SGH-X640 | Samsung Galaxy S III (T-Mobile) | Samsung Messager III / R570 | LG Stylo 4 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-X640 | Samsung Galaxy S III (T-Mobile) | Samsung Messager III / R570 | LG Stylo 4 |
