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| Phone | Ericsson T66 | Samsung SCH-A645 | Pantech Matrix Pro C820 | Red Hydrogen One |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? | ? |
2.4" diag. 4 : 3 |
5.7" diag. 16 : 9 |
| Display Resolution & Type | ? |
128 x 160 pixels LCD (STN) |
240 x 320 pixels (~167 ppi) LCD (TFT/TFD) |
1440 x 2560 pixels (~515 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? | 60 Hz |
| Battery | ? | 1,000 mAh | 1,320 mAh | 4,510 mAh |
| Processor | ? | ? | 528 MHz ARM 11 | 2.5 GHz Qualcomm Snapdragon 835 (MSM8998) |
| RAM | ? | ? | ? | 6 GB |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | 128 GB * |
| Main Camera | - | - | 2 megapixel | 12 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | - | - | QCIF (176 x 144) | 4K UHD |
| Front Camera | - | - | - | 8 megapixel |
| Weight |
2.08 oz (59g) |
3.2 oz (91g) |
5.34 oz (151g) |
9.63 oz (273g) |
| Dimensions |
3.62" x 1.61" x 0.69" (92 x 41 x 17.5 mm) |
3.54" x 1.79" x 0.94" (90 x 45 x 23.9 mm) |
4.2" x 2" x 0.9" (107 x 51 x 22.9 mm) |
6.54" x 3.28" x 0.39" (166 x 83 x 10 mm) |
| Form Factor | Slab | Clamshell | Slide | Slab |
| Platform / OS | (proprietary) | (proprietary) | Windows Mobile Standard | Android |
| Network Bands |
GSM: 900, 1800, 1900 |
CDMA: 850, 1900 AMPS: 850 |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 66 WCDMA: 1, 2, 4, 5, 8, 19 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
| Data Technology | - | 1xRTT | HSDPA 3.6 | LTE (Cat 12) |
| Features | ||||
| Fingerprint Reader | - | - | - |
Yes stand-alone |
| Flashlight | - | - | - | Yes |
| GPS / Location | - | Yes | n/a | n/a |
| Accessibility | ||||
| Hearing Aid Compatible | - |
Yes M3 (mostly compatible) |
- |
Yes M4, T3 (mostly tele-coil compatible) |
| Multiple Languages | Yes | Yes | n/a | n/a |
| TTY/TDD (Digital) | - | Yes | Yes | Yes |
| Alerts | ||||
| Extra Display | - | Yes | - | - |
| Ringer Profiles | Yes | - | Yes | - |
| Connectivity | ||||
| Bluetooth | - | - | Yes | Yes |
| NFC | - | - | - | Yes |
| USB | - | - | Yes |
Yes USB Type C |
| Wi-Fi | - | - | - |
Yes 5 (802.11 a,ac,b,g,n) |
| Contacts | ||||
| Picture ID | - | Yes | n/a | n/a |
| Ringer ID | - | - | n/a | n/a |
| Voice Dialing | - | Yes | n/a | n/a |
| Customization | ||||
| Custom Graphics | Yes | Yes | n/a | n/a |
| Custom Ringtones | Yes | Yes | n/a | n/a |
| Real-Music Ringers | - | - | n/a | n/a |
| Data & Network | ||||
| Data Tethering | - | - | n/a | n/a |
| WAP / Web Browser | Yes | Yes * | n/a | n/a |
| Input | ||||
| Predictive Text Entry | Yes | Yes | n/a | n/a |
| Side Keys | Yes | Yes | 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 | Yes | Yes | n/a | n/a |
| Instant Messaging | - | - | n/a | n/a |
| MMS | - | - | n/a | n/a |
| Text Messaging Templates | Yes | Yes | n/a | n/a |
| Music | ||||
| FM Radio | - | - | - | Yes |
| Headphone Jack (3.5mm) | - | - | - | Yes |
| Music Player | - | - | n/a | n/a |
| Stereo Speakers | - | - | - | Yes |
| Power | ||||
| Fast Charging | - | - | - | Yes |
| Productivity | ||||
| Alarm | Yes | Yes | n/a | n/a |
| Calculator | Yes | Yes | n/a | n/a |
| Calendar | Yes | Yes | n/a | n/a |
| To-Do List | Yes | Yes | n/a | n/a |
| Voice Memo | - | Yes | n/a | n/a |
| Software | ||||
| BREW | - | Yes * | n/a | n/a |
| Games | Yes | Yes * | n/a | n/a |
| Java (J2ME) | - | - | n/a | n/a |
| Voice | ||||
| HD Voice | - | - | - | Yes |
| Headset Jack (2.5 mm) | - | Yes | n/a | n/a |
| Speaker Phone | - | Yes | Yes | Yes |
| * Some versions only | ||||
| Ericsson T66 | Samsung SCH-A645 | Pantech Matrix Pro C820 | Red Hydrogen One | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Ericsson T66 | Samsung SCH-A645 | Pantech Matrix Pro C820 | Red Hydrogen One |
