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| Phone | Pantech Matrix Pro C820 | LG Tritan AX-840 / UX-840 | ZTE Obsidian | Samsung UpStage M620 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
2.4" diag. 4 : 3 |
3" diag. 5 : 3 |
4.5" diag. 16 : 9 |
2.1" diag. 4 : 3 |
| Display Resolution & Type |
240 x 320 pixels (~167 ppi) LCD (TFT/TFD) |
240 x 400 pixels (~155 ppi) LCD (TFT/TFD) |
480 x 854 pixels (~218 ppi) LCD (TFT/TFD) |
176 x 220 pixels (~134 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | 60 Hz | ? |
| Battery | 1,320 mAh | 950 mAh | 1,800 mAh | 620 mAh |
| Processor | 528 MHz ARM 11 | ? | 1 GHz MediaTek / MT6735M | ? |
| RAM | ? | ? | 1 GB | ? |
| Storage | ? raw hardware | ? raw hardware | 8 GB | ? raw hardware |
| Main Camera | 2 megapixel | 3 megapixel | 5 megapixel | 1 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | QCIF (176 x 144) | QVGA (320 x 240) | 720p HD | ? |
| Front Camera | - | - | 2 megapixel | - |
| Weight |
5.34 oz (151g) |
5.03 oz (143g) |
4.66 oz (132g) |
2.57 oz (73g) |
| Dimensions |
4.2" x 2" x 0.9" (107 x 51 x 22.9 mm) |
4.45" x 2.24" x 0.65" (113 x 57 x 16.5 mm) |
5.41" x 2.7" x 0.39" (137 x 69 x 10 mm) |
4.07" x 1.73" x 0.37" (103 x 44 x 9.4 mm) |
| Form Factor | Slide | Slide | Slab | Slab |
| Platform / OS | Windows Mobile Standard | (proprietary) | Android | (proprietary) |
| Network Bands |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 |
4G LTE: 2, 4, 12 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 |
| Data Technology | HSDPA 3.6 | EVDO r0 | LTE (Cat 4) | EVDO r0 |
| Features | ||||
| Flashlight | - | - | Yes | - |
| GPS / Location | n/a | Yes | n/a | - |
| Accessibility | ||||
| Adjustable Text Size | n/a | Yes | n/a | Yes |
| Hearing Aid Compatible | - |
Yes M4, T4 (very tele-coil compatible) |
Yes M4, T3 (mostly tele-coil compatible) |
Yes M4 (very compatible) |
| Multiple Languages | n/a | Yes | n/a | - |
| TTY/TDD (Digital) | Yes | Yes | Yes | Yes |
| Alerts | ||||
| Extra Display | - | - | - | Yes |
| Ringer Profiles | Yes | - | - | - |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | Yes |
| Mobile Hotspot | n/a | - | n/a | - |
| USB | Yes |
Yes Micro-USB |
Yes Micro-USB |
Yes |
| Wi-Fi | - | - |
Yes 4 (802.11 b,g,n) |
- |
| Contacts | ||||
| Picture ID | n/a | Yes | n/a | Yes |
| Ringer ID | n/a | Yes | n/a | Yes |
| Voice Dialing | n/a | Yes | n/a | Yes |
| Customization | ||||
| Custom Graphics | n/a | Yes | n/a | Yes |
| Custom Ringtones | n/a | Yes | n/a | Yes |
| Real-Music Ringers | n/a | Yes | n/a | Yes |
| Data & Network | ||||
| Data Tethering | n/a | - | n/a | - |
| External Antenna Jack | n/a | - | n/a | Yes |
| WAP / Web Browser | n/a | Yes | n/a | Yes |
| Input | ||||
| Predictive Text Entry | n/a | - | n/a | Yes |
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | Yes | Yes | - | - |
| Touch Screen | - | Yes |
Yes Capacitive |
- |
| Memory | ||||
| Memory Card Slot | Yes | Yes | Yes | Yes |
| Messaging | ||||
| Email Client | n/a | Yes | n/a | - |
| Instant Messaging | n/a | Yes | n/a | Yes |
| MMS | n/a | Yes | n/a | Yes |
| Text Messaging Templates | n/a | Yes | n/a | Yes |
| Music | ||||
| Headphone Jack (3.5mm) | - | Yes | Yes | - |
| Music Player | n/a | Yes | n/a | Yes |
| Productivity | ||||
| Alarm | n/a | Yes | n/a | Yes |
| Calculator | n/a | Yes | n/a | Yes |
| Calendar | n/a | Yes | n/a | Yes |
| To-Do List | n/a | - | n/a | Yes |
| Voice Memo | n/a | Yes | n/a | Yes |
| Software | ||||
| BREW | n/a | Yes | n/a | - |
| Games | n/a | Yes | n/a | Yes |
| Java (J2ME) | n/a | - | n/a | Yes |
| Voice | ||||
| Speaker Phone | Yes | Yes | Yes | Yes |
| Pantech Matrix Pro C820 | LG Tritan AX-840 / UX-840 | ZTE Obsidian | Samsung UpStage M620 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Pantech Matrix Pro C820 | LG Tritan AX-840 / UX-840 | ZTE Obsidian | Samsung UpStage M620 |
