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| Phone | Samsung SGH-X640 | Samsung Galaxy J7 (2017, GSM) / J7 Prime / Halo | Samsung SGH-P850 / P858 | Alcatel Go Flip / MyFlip | Samsung Galaxy S6 (GSM) |
| Current U.S. Carriers | (none) | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size | ? |
5.5" diag. 16 : 9 |
? |
2.8" diag. 4 : 3 |
5.1" diag. 16 : 9 |
| Display Resolution & Type |
128 x 160 pixels LCD (TFT/TFD) |
720 x 1280 pixels (~267 ppi) LCD (TFT/TFD) |
240 x 320 pixels LCD (TFT/TFD) |
240 x 320 pixels (~143 ppi) LCD (TFT/TFD) |
1440 x 2560 pixels (~576 ppi) AMOLED |
| Display Refresh | ? | 60 Hz | ? | ? | 60 Hz |
| Battery | 800 mAh | 3,300 mAh | 950 mAh | 1,350 mAh | 2,550 mAh |
| Processor | ? | 1.6 GHz Samsung Exynos 7870 | ? | 1.1 GHz Qualcomm Snapdragon 210 (MSM8909) | 2.1 GHz Samsung Exynos 7420 |
| RAM | ? | 2 GB | ? | 512 MB | 3 GB |
| Storage | ? raw hardware | 16 GB * | ? raw hardware | 4 GB | 32 GB * |
| Main Camera | Yes | 8 megapixel | 3 megapixel | 2 megapixel | 16 megapixel |
| Wide Camera | - | - | - | - | - |
| Tele Camera | - | - | - | - | - |
| Video Capture | - | 1080p HD | ? | 720p HD | 4K UHD |
| Front Camera | - | Yes | - | - | 5 megapixel |
| Weight |
3 oz (85g) |
5.8 oz (164g) |
4.23 oz (120g) |
4.1 oz (116g) |
4.87 oz (138g) |
| Dimensions |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
5.96" x 3.01" x 0.34" (151 x 76 x 8.6 mm) |
3.77" x 1.86" x 0.96" (96 x 47 x 24.4 mm) |
4.13" x 2.08" x 0.74" (105 x 53 x 18.7 mm) |
5.65" x 2.78" x 0.27" (143 x 71 x 6.8 mm) |
| Form Factor | Clamshell | Slab | Clamshell | Clamshell | Slab |
| Platform / OS | (proprietary) | Android | (proprietary) | (proprietary) | Android |
| Network Bands |
GSM: 900, 1800, 1900 |
GSM: 900, 1800, 1900 |
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| Data Technology | GPRS | LTE (Cat 6) | EDGE | LTE (Cat 4) | LTE (Cat 6) |
| Features | |||||
| Fingerprint Reader | - | - | - | - | Yes |
| Flashlight | - | Yes | - | - | Yes |
| GPS / Location | - | n/a | - | Yes | n/a |
| VR-ready | - | - | - | - | Yes |
| Accessibility | |||||
| Adjustable Text Size | - | n/a | - | Yes | n/a |
| Hearing Aid Compatible | - | Yes | - | Yes | Yes |
| Multiple Languages | Yes | n/a | Yes | Yes | n/a |
| TTY/TDD (Digital) | - | Yes | - | Yes | Yes |
| Alerts | |||||
| Extra Display | - | - | Yes | Yes | - |
| Connectivity | |||||
| Bluetooth | - | Yes | Yes | Yes | Yes |
| Infrared (IR) | - | - | - | - | Yes |
| MirrorLink | - | - | - | - | Yes |
| Mobile Hotspot | - | n/a | - | Yes | n/a |
| NFC | - | - | - | - | Yes |
| USB | - |
Yes Micro-USB |
Yes |
Yes Micro-USB |
Yes Micro-USB |
| Wi-Fi | - |
Yes 5 (802.11 a,ac,b,g,n) |
- |
Yes 4 (802.11 b,g,n) |
Yes 5 (802.11 a,ac,b,g,n) |
| Contacts | |||||
| Picture ID | Yes | n/a | Yes | Yes | n/a |
| Ringer ID | Yes | n/a | Yes | Yes | n/a |
| Customization | |||||
| Custom Graphics | Yes | n/a | Yes | Yes | n/a |
| Custom Ringtones | Yes | n/a | Yes | Yes | n/a |
| Real-Music Ringers | - | n/a | Yes | Yes | n/a |
| Data & Network | |||||
| WAP / Web Browser | Yes | n/a | Yes | Yes | n/a |
| Input | |||||
| Predictive Text Entry | Yes | n/a | Yes | Yes | n/a |
| Side Keys | Yes | Yes | Yes | Yes | Yes |
| Touch Screen | - | Yes | - | - | Yes |
| Memory | |||||
| Memory Card Slot | - | Yes | Yes | Yes | - |
| Messaging | |||||
| Email Client | - | n/a | Yes | Yes | n/a |
| EMS / Picture Messaging | Yes | n/a | - | - | n/a |
| MMS | Yes | n/a | Yes | Yes | n/a |
| Text Messaging Templates | Yes | n/a | Yes | - | n/a |
| Music | |||||
| FM Radio | - | Yes | - | Yes | - |
| Headphone Jack (3.5mm) | - | Yes | - | Yes | Yes |
| Music Player | - | n/a | Yes | Yes | n/a |
| Stereo Speakers | - | - | Yes | - | - |
| Photo & Video | |||||
| DLNA | - | - | - | - | Yes |
| Miracast | - | - | - | - | Yes |
| TV Output | - | - | Yes | - | Yes |
| Power | |||||
| Fast Charging | - | - | - | - | Yes |
| Wireless Charging | - | - | - | - | Yes |
| Productivity | |||||
| Alarm | Yes | n/a | Yes | Yes | n/a |
| Calculator | Yes | n/a | Yes | Yes | n/a |
| Calendar | Yes | n/a | Yes | Yes | n/a |
| To-Do List | Yes | n/a | - | - | n/a |
| Voice Memo | Yes | n/a | Yes | - | n/a |
| Software | |||||
| Games | Yes | n/a | Yes | - | n/a |
| Java (J2ME) | Yes | n/a | Yes | - | n/a |
| Voice | |||||
| HD Voice | - | Yes | - | Yes | Yes |
| Headset Jack (2.5 mm) | Yes | n/a | - | - | n/a |
| Speaker Phone | Yes | Yes | Yes | Yes | Yes |
| Samsung SGH-X640 | Samsung Galaxy J7 (2017, GSM) / J7 Prime / Halo | Samsung SGH-P850 / P858 | Alcatel Go Flip / MyFlip | Samsung Galaxy S6 (GSM) | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-X640 | Samsung Galaxy J7 (2017, GSM) / J7 Prime / Halo | Samsung SGH-P850 / P858 | Alcatel Go Flip / MyFlip | Samsung Galaxy S6 (GSM) |
