Compare Phones
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| Phone | Samsung SGH-X640 | AT&T Cingular Flip IV / Cricket Debut Flip | ZTE Blade Max 3 / Max Blue | Kyocera DuraForce XD |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? |
2.8" diag. 4 : 3 |
6" diag. 16 : 9 |
5.7" diag. 16 : 9 |
| Display Resolution & Type |
128 x 160 pixels LCD (TFT/TFD) |
240 x 320 pixels (~143 ppi) LCD (TFT/TFD) |
1080 x 1920 pixels (~367 ppi) LCD (TFT/TFD) |
720 x 1280 pixels (~258 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | 60 Hz | 60 Hz |
| Battery | 800 mAh | 1,450 mAh | 4,000 mAh | 3,700 mAh |
| Processor | ? | 1.1 GHz Qualcomm Snapdragon 210 (MSM8909) | 2 GHz Qualcomm Snapdragon 625 (MSM8953) | 1.6 GHz Qualcomm Snapdragon 400 (MSM8928) |
| RAM | ? | 512 MB | 2 GB | 2 GB |
| Storage | ? raw hardware | 4 GB | 16 GB | 16 GB |
| Main Camera | Yes | 2 megapixel | 13 megapixel | 8 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | - | WVGA / 480p | 4K UHD | 1080p HD |
| Front Camera | - | - | 5 megapixel | 2 megapixel |
| Weight |
3 oz (85g) |
4.59 oz (130g) |
6.34 oz (180g) |
10.83 oz (307g) |
| Dimensions |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
4.13" x 2.14" x 0.74" (105 x 54 x 18.9 mm) |
6.49" x 3.3" x 0.35" (165 x 84 x 8.9 mm) |
6.57" x 3.4" x 0.55" (167 x 86 x 14 mm) |
| Form Factor | Clamshell | Clamshell | Slab | Slab |
| Platform / OS | (proprietary) | (proprietary) | Android | Android |
| Network Bands |
GSM: 900, 1800, 1900 |
4G LTE: 2, 4, 5, 12, 14 WCDMA: 2, 4, 5 |
4G LTE: 2, 4, 5, 12, 13, 25 WCDMA: 2, 4, 5 CDMA: 850, 1900 GSM: 850, 900, 1800, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 17, 20, 29 WCDMA: 1, 2, 5, 8 GSM: 850, 900, 1800, 1900 |
| Data Technology | GPRS | LTE (Cat 4) | LTE (Cat 4) | LTE (Cat 3) |
| Features | ||||
| Fingerprint Reader | - | - |
Yes stand-alone |
- |
| Flashlight | - | - | Yes | Yes |
| GPS / Location | - | Yes | n/a | n/a |
| Ruggedized | - | - | - | Yes |
| Water-Resistant | - | - | - |
Yes IPX8 (SCUBA) |
| Accessibility | ||||
| Adjustable Text Size | - | Yes | n/a | n/a |
| Hearing Aid Compatible | - |
Yes M4, T4 (very tele-coil compatible) |
Yes M4, T3 (mostly tele-coil compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
| Multiple Languages | Yes | Yes | n/a | n/a |
| TTY/TDD (Digital) | - | Yes | Yes | Yes |
| Alerts | ||||
| Extra Display | - | Yes | - | - |
| Connectivity | ||||
| Bluetooth | - | Yes | Yes | Yes |
| Mobile Hotspot | - | Yes | n/a | n/a |
| NFC | - | - | - | Yes |
| USB | - |
Yes Micro-USB |
Yes USB Type C |
Yes Micro-USB |
| Wi-Fi | - |
Yes 4 (802.11 b,g,n) |
Yes 5 (802.11 ac,b,g,n) |
Yes 5 (802.11 a,ac,b,g,n) |
| Contacts | ||||
| Picture ID | Yes | Yes | n/a | n/a |
| Ringer ID | Yes | - | n/a | n/a |
| Voice Dialing | - | Yes | n/a | n/a |
| Customization | ||||
| Custom Graphics | Yes | Yes | n/a | n/a |
| Custom Ringtones | Yes | Yes | n/a | n/a |
| Real-Music Ringers | - | Yes | n/a | n/a |
| Data & Network | ||||
| Data Tethering | - | - | n/a | n/a |
| WAP / Web Browser | Yes | Yes | n/a | n/a |
| Input | ||||
| Predictive Text Entry | Yes | Yes | n/a | n/a |
| Side Keys | Yes | Yes | Yes | Yes |
| Touch Screen | - | - |
Yes Capacitive |
Yes Capacitive |
| Memory | ||||
| Memory Card Slot | - | Yes | Yes | Yes |
| Messaging | ||||
| Email Client | - | Yes | n/a | n/a |
| EMS / Picture Messaging | Yes | - | n/a | n/a |
| MMS | Yes | Yes | n/a | n/a |
| Text Messaging Templates | Yes | - | n/a | n/a |
| Music | ||||
| FM Radio | - | Yes | - | - |
| Headphone Jack (3.5mm) | - | Yes | Yes | Yes |
| Music Player | - | Yes | n/a | n/a |
| Photo & Video | ||||
| Miracast | - | - | - | Yes |
| Power | ||||
| Fast Charging | - | - | Yes | Yes |
| Productivity | ||||
| Alarm | Yes | Yes | n/a | n/a |
| Calculator | Yes | Yes | n/a | n/a |
| Calendar | Yes | Yes | n/a | n/a |
| To-Do List | Yes | - | n/a | n/a |
| Voice Memo | Yes | Yes | n/a | n/a |
| Software | ||||
| Games | Yes | Yes | n/a | n/a |
| Java (J2ME) | Yes | - | n/a | n/a |
| Voice | ||||
| HD Voice | - | Yes | - | Yes |
| Headset Jack (2.5 mm) | Yes | - | n/a | n/a |
| Push-To-Talk | - | - | - | Yes |
| Speaker Phone | Yes | Yes | Yes | Yes |
| Samsung SGH-X640 | AT&T Cingular Flip IV / Cricket Debut Flip | ZTE Blade Max 3 / Max Blue | Kyocera DuraForce XD | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-X640 | AT&T Cingular Flip IV / Cricket Debut Flip | ZTE Blade Max 3 / Max Blue | Kyocera DuraForce XD |
