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| Phone | Microsoft Lumia 640 | Siemens CT66 / C66 / C65 / C71 / C70 | BlackBerry Curve 9350 | Kyocera 2235 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
5" diag. 16 : 9 |
? |
2.4" diag. 4 : 3 |
? |
| Display Resolution & Type |
720 x 1280 pixels (~294 ppi) LCD (TFT/TFD) |
130 x 130 pixels LCD (Color) |
480 x 360 pixels (~246 ppi) LCD (TFT/TFD) |
? |
| Display Refresh | ? | ? | ? | ? |
| Battery | 2,500 mAh | 600 mAh | 1,040 mAh | ? |
| Processor | 1.2 GHz Qualcomm Snapdragon 400 (MSM8926) | ? | 800 MHz Marvell | ? |
| RAM | 1 GB | ? | ? | ? |
| Storage | 8 GB | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | 8 megapixel | Yes | 5 megapixel | - |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | 1080p HD | - | VGA (640 x 480) | - |
| Front Camera | 1 megapixel | - | - | - |
| Weight |
5.11 oz (145g) |
3 oz (85g) |
3.49 oz (99g) |
4.34 oz (123g) |
| Dimensions |
5.56" x 2.84" x 0.35" (141 x 72 x 8.9 mm) |
4.1" x 1.8" x 0.7" (104 x 46 x 17.8 mm) |
4.29" x 2.36" x 0.43" (109 x 60 x 10.9 mm) |
4.72" x 1.89" x 0.95" (120 x 48 x 24.1 mm) |
| Form Factor | Slab | Slab | Slab | Slab |
| Platform / OS | Windows | (proprietary) | BlackBerry OS | (proprietary) |
| Network Bands |
GSM: 850, 1800, 1900 |
CDMA: 800, 850, 1900 |
CDMA: 850, 1900 AMPS: 850 |
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| Data Technology | LTE (Cat 4) | GPRS | EVDO rA | 1xRTT |
| Features | ||||
| GPS / Location | n/a | - | n/a | - |
| Accessibility | ||||
| Adjustable Text Size | n/a | - | n/a | - |
| Hearing Aid Compatible |
Yes M3, T4 (very tele-coil compatible) |
- |
Yes M4, T4 (very tele-coil compatible) |
- |
| Multiple Languages | n/a | Yes | n/a | Yes |
| TTY/TDD (Digital) | Yes | - | Yes | - |
| Alerts | ||||
| Ringer Profiles | - | Yes | Yes | - |
| Connectivity | ||||
| Bluetooth | Yes | - | Yes | - |
| Infrared (IR) | - | Yes | - | - |
| Mobile Hotspot | n/a | - | n/a | - |
| NFC | Yes | - | Yes | - |
| USB |
Yes Micro-USB |
Yes |
Yes Micro-USB |
- |
| Wi-Fi |
Yes 4 (802.11 b,g,n) |
- |
Yes 4 (802.11 b,g,n) |
- |
| Contacts | ||||
| Picture ID | n/a | Yes | n/a | - |
| Ringer ID | n/a | Yes | n/a | - |
| Voice Dialing | n/a | - | n/a | Yes |
| Customization | ||||
| Changeable Body Plates | - | Yes | - | - |
| Custom Graphics | n/a | Yes | n/a | - |
| Custom Ringtones | n/a | Yes | n/a | Yes |
| Real-Music Ringers | n/a | - | n/a | - |
| Data & Network | ||||
| Data Tethering | n/a | - | n/a | Yes |
| WAP / Web Browser | n/a | Yes | n/a | Yes |
| Input | ||||
| Predictive Text Entry | n/a | Yes | n/a | Yes |
| Side Keys | Yes | - | Yes | - |
| Text Keyboard, Hardware | - | - | Yes | - |
| Touch Screen |
Yes Capacitive |
- | - | - |
| Memory | ||||
| Memory Card Slot | Yes | - | Yes | - |
| Messaging | ||||
| Email Client | n/a | - | n/a | - |
| EMS / Picture Messaging | n/a | Yes | n/a | - |
| Instant Messaging | n/a | - | n/a | - |
| MMS | n/a | Yes | n/a | - |
| Text Messaging Templates | n/a | Yes | n/a | Yes |
| Music | ||||
| FM Radio | Yes | - | - | - |
| Headphone Jack (3.5mm) | Yes | - | Yes | - |
| Music Player | n/a | - | n/a | - |
| Photo & Video | ||||
| DLNA | Yes | - | - | - |
| Miracast | Yes | - | - | - |
| Productivity | ||||
| Alarm | n/a | Yes | n/a | Yes |
| Calculator | n/a | Yes | n/a | Yes |
| Calendar | n/a | Yes | n/a | - |
| To-Do List | n/a | Yes | n/a | - |
| Voice Memo | n/a | Yes | n/a | Yes |
| Software | ||||
| Games | n/a | Yes | n/a | Yes |
| Java (J2ME) | n/a | Yes | n/a | - |
| Voice | ||||
| Call Screening | - | Yes | - | - |
| HD Voice | Yes | - | - | - |
| Headset Jack (2.5 mm) | n/a | - | n/a | Yes |
| Push-To-Talk | - | Yes * | - | - |
| Speaker Phone | Yes | Yes | Yes | - |
| * Some versions only | ||||
| Microsoft Lumia 640 | Siemens CT66 / C66 / C65 / C71 / C70 | BlackBerry Curve 9350 | Kyocera 2235 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Microsoft Lumia 640 | Siemens CT66 / C66 / C65 / C71 / C70 | BlackBerry Curve 9350 | Kyocera 2235 |
