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| Phone | Siemens M55 | ZTE Z998 / Unico LTE | Pantech Duo C810 |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size | ? |
4.5" diag. 16 : 9 |
2.2" diag. 4 : 3 |
| Display Resolution & Type |
101 x 80 pixels LCD (Color) |
540 x 960 pixels (~245 ppi) LCD (TFT/TFD) |
240 x 320 pixels (~182 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | ? |
| Battery | 700 mAh | 2,070 mAh | 1,320 mAh |
| Processor | ? | 1.2 GHz Qualcomm Snapdragon 400 MSM8930 | ARM 920t PXA27x |
| RAM | ? | 1 GB | ? |
| Storage | ? raw hardware | 4 GB | ? raw hardware |
| Main Camera | - | 5 megapixel | 1 megapixel |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | - | 720p HD | QVGA (320 x 240) |
| Front Camera | - | 1 megapixel | - |
| Weight |
2.93 oz (83g) |
4.8 oz (136g) |
3.88 oz (110g) |
| Dimensions |
3.98" x 1.81" x 0.83" (101 x 46 x 21.1 mm) |
5.2" x 2.6" x 0.4" (132 x 66 x 10.2 mm) |
4.01" x 1.97" x 0.78" (102 x 50 x 19.8 mm) |
| Form Factor | Slab | Slab | Slide |
| Platform / OS | (proprietary) | Android | Windows Mobile Standard |
| Network Bands |
GSM: 900, 1800, 1900 |
WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 |
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| Data Technology | GPRS | LTE (Cat 3) | HSDPA 1.8 |
| Features | |||
| GPS / Location | Yes | n/a | n/a |
| Accessibility | |||
| Adjustable Text Size | - | n/a | n/a |
| Hearing Aid Compatible | - |
Yes M3, T4 (very tele-coil compatible) |
- |
| Multiple Languages | Yes | n/a | n/a |
| TTY/TDD (Digital) | Yes | Yes | - |
| Alerts | |||
| Ringer Profiles | - | - | Yes |
| Connectivity | |||
| Bluetooth | - | Yes | Yes |
| Mobile Hotspot | - | n/a | n/a |
| USB | - |
Yes Micro-USB |
Yes |
| Wi-Fi | - |
Yes 4 (802.11 b,g,n) |
- |
| Contacts | |||
| Picture ID | - | n/a | n/a |
| Ringer ID | - | n/a | n/a |
| Voice Dialing | Yes | n/a | n/a |
| Customization | |||
| Custom Graphics | Yes | n/a | n/a |
| Custom Ringtones | Yes | n/a | n/a |
| Real-Music Ringers | - | n/a | n/a |
| Data & Network | |||
| Data Tethering | Yes | n/a | n/a |
| WAP / Web Browser | Yes | n/a | n/a |
| Input | |||
| Predictive Text Entry | Yes | n/a | n/a |
| Side Keys | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | - | Yes |
| Touch Screen | - |
Yes Capacitive |
- |
| Memory | |||
| Memory Card Slot | - | Yes | Yes |
| Messaging | |||
| Email Client | Yes | n/a | n/a |
| EMS / Picture Messaging | Yes | n/a | n/a |
| Instant Messaging | - | n/a | n/a |
| MMS | Yes | n/a | n/a |
| Text Messaging Templates | - | n/a | n/a |
| Music | |||
| Headphone Jack (3.5mm) | - | Yes | - |
| Music Player | - | n/a | n/a |
| Productivity | |||
| Alarm | - | n/a | n/a |
| Calculator | - | n/a | n/a |
| Calendar | Yes | n/a | n/a |
| To-Do List | - | n/a | n/a |
| Voice Memo | - | n/a | n/a |
| Software | |||
| Games | Yes | n/a | n/a |
| Java (J2ME) | Yes | n/a | n/a |
| Voice | |||
| Speaker Phone | Yes | Yes | Yes |
| * Some versions only | |||
| Siemens M55 | ZTE Z998 / Unico LTE | Pantech Duo C810 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Siemens M55 | ZTE Z998 / Unico LTE | Pantech Duo C810 |
