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| Phone | Samsung SGH-E640 | Siemens CT66 / C66 / C65 / C71 / C70 | Sonim XP5plus |
| Current U.S. Carriers | (none) | (none) | AT&T |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size | ? | ? |
2.8" diag. 4 : 3 |
| Display Resolution & Type |
176 x 220 pixels LCD (TFT/TFD) |
130 x 130 pixels LCD (Color) |
240 x 320 pixels (~143 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | 60 Hz |
| Battery | 800 mAh | 600 mAh | 3,500 mAh |
| Processor | ? | ? | 2 GHz Snapdragon 662 |
| RAM | ? | ? | 2 GB |
| Storage | ? raw hardware | ? raw hardware | 16 GB |
| Main Camera | 1 megapixel | Yes | 8 megapixel |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | QCIF (176 x 144) | - | 1080p HD |
| Front Camera | - | - | - |
| Weight |
3.17 oz (90g) |
3 oz (85g) |
9.7 oz (275g) |
| Dimensions |
3.37" x 1.78" x 0.93" (86 x 45 x 23.6 mm) |
4.1" x 1.8" x 0.7" (104 x 46 x 17.8 mm) |
5.85" x 2.59" x 0.83" (149 x 66 x 21 mm) |
| Form Factor | Clamshell | Slab | Slab |
| Platform / OS | (proprietary) | (proprietary) | (proprietary) |
| Network Bands |
GSM: 900, 1800, 1900 |
GSM: 850, 1800, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 25, 26, 29, 30, 39, 40, 41, 66, 71 WCDMA: 1, 2, 4, 5 GSM: 850, 900, 1800, 1900 |
| Data Technology | GPRS | GPRS | LTE (Cat 13) |
| Features | |||
| Barometer | - | - | Yes |
| Flashlight | - | - | Yes |
| GPS / Location | - | - | Yes |
| Ruggedized | - | - | Yes |
| Water-Resistant | - | - |
Yes IPX9 (dishwasher) |
| Accessibility | |||
| Adjustable Text Size | - | - | Yes |
| Hearing Aid Compatible | - | - | Yes |
| Multiple Languages | Yes | Yes | Yes |
| TTY/TDD (Digital) | - | - | Yes |
| Alerts | |||
| Extra Display | Yes | - | - |
| Ringer Profiles | - | Yes | - |
| Connectivity | |||
| Bluetooth |
Yes Classic Audio |
- |
Yes Classic Audio |
| Infrared (IR) | - | Yes | - |
| Mobile Hotspot | - | - | Yes |
| USB | Yes | Yes |
Yes USB Type C |
| Wi-Fi | - | - |
Yes 5 (802.11 a,ac,b,g,n) |
| Contacts | |||
| Picture ID | Yes | Yes | Yes |
| Ringer ID | Yes | Yes | Yes |
| Voice Dialing | - | - | Yes |
| Customization | |||
| Changeable Body Plates | - | Yes | - |
| Custom Graphics | Yes | Yes | Yes |
| Custom Ringtones | Yes | Yes | Yes |
| Real-Music Ringers | Yes | - | Yes |
| Data & Network | |||
| Data Tethering | - | - | Yes |
| Dual-SIM | - | - | Yes |
| WAP / Web Browser | Yes | Yes | Yes |
| Input | |||
| Predictive Text Entry | Yes | Yes | Yes |
| Side Keys | Yes | - | Yes |
| Memory | |||
| Memory Card Slot | - | - | Yes |
| Messaging | |||
| Email Client | Yes | - | - |
| EMS / Picture Messaging | Yes | Yes | - |
| MMS | Yes | Yes | Yes |
| Text Messaging Templates | Yes | Yes | Yes |
| Music | |||
| FM Radio | - | - | Yes |
| Music Player | Yes | - | Yes |
| Productivity | |||
| Alarm | Yes | Yes | Yes |
| Calculator | Yes | Yes | Yes |
| Calendar | Yes | Yes | Yes |
| To-Do List | Yes | Yes | - |
| Voice Memo | Yes | Yes | Yes |
| Software | |||
| Games | Yes | Yes | - |
| Java (J2ME) | Yes | Yes | - |
| Voice | |||
| Call Screening | - | Yes | - |
| HD Voice | - | - | Yes |
| Push-To-Talk | - | Yes * | Yes |
| Speaker Phone | Yes | Yes | Yes |
| * Some versions only | |||
| Samsung SGH-E640 | Siemens CT66 / C66 / C65 / C71 / C70 | Sonim XP5plus | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-E640 | Siemens CT66 / C66 / C65 / C71 / C70 | Sonim XP5plus |
