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| Phone | Siemens M55 | Pantech Matrix Pro C820 | HTC Amaze 4G |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size | ? |
2.4" diag. 4 : 3 |
4.3" diag. 16 : 9 |
| Display Resolution & Type |
101 x 80 pixels LCD (Color) |
240 x 320 pixels (~167 ppi) LCD (TFT/TFD) |
540 x 960 pixels (~256 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | 60 Hz |
| Battery | 700 mAh | 1,320 mAh | 1,730 mAh |
| Processor | ? | 528 MHz ARM 11 | 1.5 GHz Qualcomm Snapdragon S3 dual-core |
| RAM | ? | ? | 1 GB |
| Storage | ? raw hardware | ? raw hardware | 16 GB |
| Main Camera | - | 2 megapixel | 8 megapixel |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | - | QCIF (176 x 144) | 1080p HD |
| Front Camera | - | - | 2 megapixel |
| Weight |
2.93 oz (83g) |
5.34 oz (151g) |
6.1 oz (173g) |
| Dimensions |
3.98" x 1.81" x 0.83" (101 x 46 x 21.1 mm) |
4.2" x 2" x 0.9" (107 x 51 x 22.9 mm) |
5.12" x 2.58" x 0.46" (130 x 66 x 11.7 mm) |
| Form Factor | Slab | Slide | Slab |
| Platform / OS | (proprietary) | Windows Mobile Standard | Android |
| Network Bands |
GSM: 900, 1800, 1900 |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
WCDMA: 1, 2, 4, 5 GSM: 850, 900, 1800, 1900 |
| Data Technology | GPRS | HSDPA 3.6 | HSPA+ 42 |
| Features | |||
| Flashlight | - | - | Yes |
| GPS / Location | Yes | n/a | n/a |
| Accessibility | |||
| Hearing Aid Compatible | - | - |
Yes M3, T3 (mostly tele-coil compatible) |
| Multiple Languages | Yes | n/a | n/a |
| TTY/TDD (Digital) | Yes | Yes | Yes |
| Alerts | |||
| Ringer Profiles | - | Yes | - |
| Connectivity | |||
| Bluetooth | - | Yes | Yes |
| Mobile Hotspot | - | n/a | n/a |
| NFC | - | - | Yes |
| USB | - | Yes | Yes |
| Wi-Fi | - | - |
Yes 4 (802.11 a,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 | |||
| FM Radio | - | - | Yes |
| Headphone Jack (3.5mm) | - | - | Yes |
| Music Player | - | n/a | n/a |
| Photo & Video | |||
| DLNA | - | - | Yes |
| TV Output | - | - | Yes |
| 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 |
| Siemens M55 | Pantech Matrix Pro C820 | HTC Amaze 4G | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Siemens M55 | Pantech Matrix Pro C820 | HTC Amaze 4G |
