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| Phone | Samsung SGH-X640 | Cricket Influence / AT&T Maestro Plus | Samsung M400 | BlackBerry 7750 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? |
6.2" diag. 19 : 9 |
2.4" diag. 4 : 3 |
? |
| Display Resolution & Type |
128 x 160 pixels LCD (TFT/TFD) |
720 x 1520 pixels (~271 ppi) LCD (TFT/TFD) |
240 x 320 pixels (~167 ppi) LCD (TFT/TFD) |
240 x 240 pixels LCD (Color) |
| Display Refresh | ? | 60 Hz | ? | ? |
| Battery | 800 mAh | 3,300 mAh | 1,000 mAh | ? |
| Processor | ? | 1.8 GHz Qualcomm Snapdragon 460 | 400 MHz Qualcomm QSC6155 | ? |
| RAM | ? | 3 GB | 128 MB | ? |
| Storage | ? raw hardware | 32 GB | 256 MB | ? raw hardware |
| Main Camera | Yes | 13 megapixel | 1 megapixel | - |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | - | 1080p HD | - | - |
| Front Camera | - | 5 megapixel | - | - |
| Weight |
3 oz (85g) |
6.52 oz (185g) |
3.7 oz (105g) |
5.01 oz (142g) |
| Dimensions |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
6.28" x 2.99" x 0.35" (160 x 76 x 8.9 mm) |
3.8" x 1.9" x 0.7" (97 x 48 x 17.8 mm) |
4.76" x 3.03" x 0.71" (121 x 77 x 18 mm) |
| Form Factor | Clamshell | Slab | Clamshell | Slab |
| Platform / OS | (proprietary) | Android | (proprietary) | BlackBerry OS |
| Network Bands |
GSM: 900, 1800, 1900 |
4G LTE: 2, 4, 5, 12, 14, 30 WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
CDMA: 800, 850, 1900 |
CDMA: 850, 1900 |
| Data Technology | GPRS | LTE (Cat 13) | 1xRTT | 1xRTT |
| Features | ||||
| Fingerprint Reader | - |
Yes stand-alone |
- | - |
| Flashlight | - | Yes | - | - |
| GPS / Location | - | n/a | Yes | n/a |
| Accessibility | ||||
| Adjustable Text Size | - | n/a | Yes | n/a |
| Hearing Aid Compatible | - |
Yes M4, T3 (mostly tele-coil compatible) |
Yes M4, T4 (very tele-coil compatible) |
- |
| Multiple Languages | Yes | n/a | Yes | n/a |
| TTY/TDD (Digital) | - | Yes | Yes | Yes |
| Alerts | ||||
| Extra Display | - | - | Yes | - |
| Ringer Profiles | - | - | - | Yes |
| Connectivity | ||||
| Bluetooth | - | Yes | Yes | - |
| USB | - |
Yes USB Type C |
Yes Micro-USB |
Yes |
| Wi-Fi | - |
Yes 4 (802.11 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 | ||||
| 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 |
| Text Keyboard, Hardware | - | - | - | Yes |
| Touch Screen | - |
Yes Capacitive |
- | - |
| Memory | ||||
| Memory Card Slot | - | Yes | - | - |
| Messaging | ||||
| Email Client | - | n/a | - | n/a |
| EMS / Picture Messaging | Yes | n/a | - | n/a |
| MMS | Yes | n/a | Yes | n/a |
| Text Messaging Templates | Yes | n/a | Yes | n/a |
| Music | ||||
| Headphone Jack (3.5mm) | - | Yes | 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 | ||||
| Games | Yes | n/a | Yes | n/a |
| Java (J2ME) | Yes | n/a | - | n/a |
| Voice | ||||
| HD Voice | - | Yes | - | - |
| Headset Jack (2.5 mm) | Yes | n/a | - | n/a |
| Speaker Phone | Yes | Yes | Yes | - |
| Samsung SGH-X640 | Cricket Influence / AT&T Maestro Plus | Samsung M400 | BlackBerry 7750 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-X640 | Cricket Influence / AT&T Maestro Plus | Samsung M400 | BlackBerry 7750 |
