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| Phone | AT&T Vista | Nokia Lumia 635 (CDMA) | BlackBerry 7750 | Siemens CT56 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
5.5" diag. 18 : 9 |
4.5" diag. 16 : 9 |
? | ? |
| Display Resolution & Type |
720 x 1440 pixels (~293 ppi) LCD (TFT/TFD) |
480 x 854 pixels (~218 ppi) LCD (TFT/TFD) |
240 x 240 pixels LCD (Color) |
101 x 64 pixels |
| Display Refresh | 60 Hz | ? | ? | ? |
| Battery | 2,450 mAh | 1,830 mAh | ? | 700 mAh |
| Processor | 2 GHz MediaTek Helio A22 (MT6761V) | 1.2 GHz Qualcomm Snapdragon 400 (MSM8926) | ? | ? |
| RAM | 3 GB | 512 MB | ? | ? |
| Storage | 32 GB | 8 GB | ? raw hardware | ? raw hardware |
| Main Camera | 8 megapixel | 5 megapixel | - | - |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | 1080p HD | 720p HD | - | - |
| Front Camera | 5 megapixel | - | - | - |
| Weight |
5.51 oz (156g) |
4.73 oz (134g) |
5.01 oz (142g) |
2.96 oz (84g) |
| Dimensions |
5.88" x 2.82" x 0.35" (149 x 72 x 8.9 mm) |
5.1" x 2.63" x 0.36" (130 x 67 x 9.1 mm) |
4.76" x 3.03" x 0.71" (121 x 77 x 18 mm) |
3.98" x 1.73" x 0.83" (101 x 44 x 21.1 mm) |
| Form Factor | Slab | Slab | Slab | Slab |
| Platform / OS | Android | Windows | BlackBerry OS | (proprietary) |
| Network Bands |
4G LTE: 2, 3, 4, 5, 7, 12, 14, 20, 30 WCDMA: 1, 2, 4, 5, 8 |
4G LTE: 25, 26, 41 WCDMA: 1, 2, 5 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 |
GSM: 850, 1900 |
| Data Technology | LTE (Cat 4) | LTE (Cat 3) | 1xRTT | GPRS |
| Features | ||||
| Flashlight | Yes | - | - | - |
| GPS / Location | n/a | n/a | n/a | Yes |
| Accessibility | ||||
| Hearing Aid Compatible |
Yes M4, T4 (very tele-coil compatible) |
Yes M3, T4 (very tele-coil compatible) |
- | - |
| Multiple Languages | n/a | n/a | n/a | Yes |
| TTY/TDD (Digital) | - | Yes | Yes | Yes |
| Alerts | ||||
| Ringer Profiles | - | - | Yes | - |
| Connectivity | ||||
| Bluetooth | Yes | Yes | - | - |
| Mobile Hotspot | n/a | n/a | n/a | - |
| USB |
Yes USB Type C |
Yes Micro-USB |
Yes | Yes |
| Wi-Fi | Yes |
Yes 4 (802.11 b,g,n) |
- | - |
| Contacts | ||||
| Picture ID | n/a | n/a | n/a | - |
| Ringer ID | n/a | n/a | n/a | - |
| Voice Dialing | n/a | n/a | n/a | Yes |
| Customization | ||||
| Changeable Body Plates | - | - | - | Yes |
| Custom Graphics | n/a | n/a | n/a | Yes |
| Custom Ringtones | n/a | n/a | n/a | Yes |
| Real-Music Ringers | n/a | n/a | n/a | - |
| Data & Network | ||||
| Data Tethering | n/a | n/a | n/a | Yes |
| WAP / Web Browser | n/a | n/a | n/a | Yes |
| Input | ||||
| Predictive Text Entry | n/a | n/a | n/a | Yes |
| Side Keys | Yes | Yes | Yes | - |
| Text Keyboard, Hardware | - | - | Yes | - |
| Touch Screen |
Yes Capacitive |
Yes Capacitive |
- | - |
| Memory | ||||
| Memory Card Slot | Yes | Yes | - | - |
| Messaging | ||||
| Email Client | n/a | n/a | n/a | - |
| EMS / Picture Messaging | n/a | n/a | n/a | Yes |
| Instant Messaging | n/a | n/a | n/a | - |
| MMS | n/a | n/a | n/a | - |
| Music | ||||
| FM Radio | - | Yes | - | - |
| Headphone Jack (3.5mm) | Yes | Yes | - | - |
| Music Player | n/a | n/a | n/a | - |
| Photo & Video | ||||
| DLNA | - | Yes | - | - |
| Productivity | ||||
| Alarm | n/a | n/a | n/a | - |
| Calculator | n/a | n/a | n/a | - |
| Calendar | n/a | n/a | n/a | - |
| To-Do List | n/a | n/a | n/a | - |
| Voice Memo | n/a | n/a | n/a | - |
| Software | ||||
| Games | n/a | n/a | n/a | - |
| Java (J2ME) | n/a | n/a | n/a | Yes |
| Voice | ||||
| HD Voice | Yes | - | - | - |
| Headset Jack (2.5 mm) | n/a | n/a | n/a | - |
| Speaker Phone | Yes | Yes | - | Yes |
| * Some versions only | ||||
| AT&T Vista | Nokia Lumia 635 (CDMA) | BlackBerry 7750 | Siemens CT56 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | AT&T Vista | Nokia Lumia 635 (CDMA) | BlackBerry 7750 | Siemens CT56 |
