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| Phone | Microsoft Lumia 640 | HTC 5800 / Fusion / S720 | Siemens CT66 / C66 / C65 / C71 / C70 |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | 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) |
240 x 320 pixels (~167 ppi) LCD (TFT/TFD) |
130 x 130 pixels LCD (Color) |
| Display Refresh | ? | ? | ? |
| Battery | 2,500 mAh | 1,050 mAh | 600 mAh |
| Processor | 1.2 GHz Qualcomm Snapdragon 400 (MSM8926) | 400 MHz Qualcomm MSM7500 | ? |
| RAM | 1 GB | ? | ? |
| Storage | 8 GB | ? raw hardware | ? raw hardware |
| Main Camera | 8 megapixel | 2 megapixel | Yes |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | 1080p HD | ? | - |
| Front Camera | 1 megapixel | - | - |
| Weight |
5.11 oz (145g) |
4.23 oz (120g) |
3 oz (85g) |
| Dimensions |
5.56" x 2.84" x 0.35" (141 x 72 x 8.9 mm) |
4.07" x 2.01" x 0.76" (103 x 51 x 19.3 mm) |
4.1" x 1.8" x 0.7" (104 x 46 x 17.8 mm) |
| Form Factor | Slab | Slab | Slab |
| Platform / OS | Windows | Windows Mobile Standard | (proprietary) |
| Network Bands |
CDMA: 850, 1900 |
GSM: 850, 1800, 1900 |
|
| Data Technology | LTE (Cat 4) | EVDO r0 | GPRS |
| 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 M3 (mostly compatible) |
- |
| Multiple Languages | n/a | 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 | - | - |
| USB |
Yes Micro-USB |
Yes | Yes |
| Wi-Fi |
Yes 4 (802.11 b,g,n) |
- | - |
| Contacts | |||
| Picture ID | n/a | n/a | Yes |
| Ringer ID | n/a | n/a | Yes |
| Voice Dialing | n/a | n/a | - |
| Customization | |||
| Changeable Body Plates | - | - | Yes |
| Custom Graphics | n/a | n/a | Yes |
| Custom Ringtones | n/a | n/a | Yes |
| Real-Music Ringers | n/a | n/a | - |
| Data & Network | |||
| Data Tethering | n/a | n/a | - |
| External Antenna Jack | n/a | n/a | - |
| WAP / Web Browser | n/a | n/a | Yes |
| Input | |||
| Predictive Text Entry | n/a | 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 | n/a | Yes |
| Instant Messaging | n/a | n/a | - |
| MMS | n/a | n/a | Yes |
| Text Messaging Templates | n/a | n/a | Yes |
| Music | |||
| FM Radio | Yes | - | - |
| Headphone Jack (3.5mm) | Yes | - | - |
| Music Player | n/a | n/a | - |
| Photo & Video | |||
| DLNA | Yes | - | - |
| Miracast | Yes | - | - |
| Productivity | |||
| Alarm | n/a | n/a | Yes |
| Calculator | n/a | n/a | Yes |
| Calendar | n/a | n/a | Yes |
| To-Do List | n/a | n/a | Yes |
| Voice Memo | n/a | n/a | Yes |
| Software | |||
| Games | n/a | n/a | Yes |
| Java (J2ME) | n/a | n/a | Yes |
| Voice | |||
| Call Screening | - | - | Yes |
| HD Voice | Yes | - | - |
| Push-To-Talk | - | - | Yes * |
| Speaker Phone | Yes | Yes | Yes |
| * Some versions only | |||
| Microsoft Lumia 640 | HTC 5800 / Fusion / S720 | Siemens CT66 / C66 / C65 / C71 / C70 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Microsoft Lumia 640 | HTC 5800 / Fusion / S720 | Siemens CT66 / C66 / C65 / C71 / C70 |
