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| Phone | ZTE Z431 / Altair | LG VX-5400 | HTC 8XT | Casio G'zOne Boulder |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
2.4" diag. 4 : 3 |
1.8" diag. 4 : 3 |
4.3" diag. 5 : 3 |
2" diag. 4 : 3 |
| Display Resolution & Type |
320 x 240 pixels (~167 ppi) LCD (TFT/TFD) |
160 x 128 pixels (~116 ppi) LCD (TFT/TFD) |
480 x 800 pixels (~217 ppi) LCD (TFT/TFD) |
240 x 320 pixels (~200 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? | ? |
| Battery | 1,000 mAh | 1,000 mAh | 1,800 mAh | 810 mAh |
| Processor | ? | ? | 1.4 GHz Qualcomm Snapdragon 400 8930 | ? |
| RAM | ? | ? | 1 GB | ? |
| Storage | ? raw hardware | ? raw hardware | 8 GB | ? raw hardware |
| Main Camera | 2 megapixel | Yes | 8 megapixel | 1 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | QVGA (320 x 240) | - | 1080p HD | ? |
| Front Camera | - | - | 2 megapixel | - |
| Weight |
3.52 oz (100g) |
3.21 oz (91g) |
4.9 oz (139g) |
4.9 oz (139g) |
| Dimensions |
4.49" x 2.39" x 0.41" (114 x 61 x 10.4 mm) |
3.54" x 1.87" x 0.89" (90 x 47 x 22.6 mm) |
5.2" x 2.6" x 0.39" (132 x 66 x 9.9 mm) |
3.9" x 2" x 0.9" (99 x 51 x 22.9 mm) |
| Form Factor | Slab | Clamshell | Slab | Clamshell |
| Platform / OS | (proprietary) | (proprietary) | Windows | (proprietary) |
| Network Bands |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 AMPS: 850 |
4G LTE: 25 CDMA: 800, 850, 1900 |
CDMA: 850, 1900 |
| Data Technology | ? | 1xRTT | LTE (Cat 3) | EVDO rA |
| Features | ||||
| Flashlight | - | - | Yes | Yes |
| GPS / Location | Yes | Yes | n/a | Yes |
| Ruggedized | - | - | - | Yes |
| Water-Resistant | - | - | - | Yes |
| Accessibility | ||||
| Adjustable Text Size | - | - | n/a | - |
| Hearing Aid Compatible |
Yes M3, T3 (mostly tele-coil compatible) |
Yes M4, T4 (very tele-coil compatible) |
Yes M4, T4 (very tele-coil compatible) |
Yes M4, T4 (very tele-coil compatible) |
| Multiple Languages | Yes | Yes | n/a | Yes |
| TTY/TDD (Digital) | Yes | Yes | Yes | Yes |
| Alerts | ||||
| Extra Display | - | Yes | - | Yes |
| Ringer Profiles | Yes | - | - | - |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | Yes |
| Mobile Hotspot | - | - | n/a | - |
| NFC | - | - | Yes | - |
| USB |
Yes Micro-USB |
- |
Yes Micro-USB |
Yes |
| Wi-Fi | - | - |
Yes 4 (802.11 a,b,g,n) |
- |
| Contacts | ||||
| Picture ID | Yes | Yes | n/a | Yes |
| Ringer ID | Yes | - | n/a | Yes |
| Voice Dialing | - | Yes | n/a | Yes |
| Customization | ||||
| Changeable Body Plates | - | - | - | Yes |
| Custom Graphics | Yes | Yes | n/a | Yes |
| Custom Ringtones | Yes | Yes | n/a | Yes |
| Real-Music Ringers | Yes | Yes | n/a | - |
| Data & Network | ||||
| Data Tethering | Yes | - | n/a | Yes |
| WAP / Web Browser | Yes | Yes | n/a | Yes |
| Input | ||||
| Predictive Text Entry | Yes | Yes | n/a | Yes |
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | Yes | - | - | - |
| Touch Screen | - | - |
Yes Capacitive |
- |
| Memory | ||||
| Memory Card Slot | Yes | - | Yes | Yes |
| Messaging | ||||
| Email Client | Yes | - | n/a | - |
| EMS / Picture Messaging | - | Yes | n/a | Yes |
| Instant Messaging | - | - | n/a | - |
| MMS | Yes | Yes | n/a | Yes |
| Text Messaging Templates | Yes | - | n/a | Yes |
| Music | ||||
| FM Radio | - | - | Yes | - |
| Headphone Jack (3.5mm) | Yes | - | Yes | - |
| Music Player | Yes | - | n/a | Yes |
| Productivity | ||||
| Alarm | Yes | Yes | n/a | Yes |
| Calculator | Yes | Yes | n/a | Yes |
| Calendar | Yes | Yes | n/a | Yes |
| To-Do List | - | - | n/a | - |
| Voice Memo | Yes | Yes | n/a | Yes |
| Software | ||||
| BREW | Yes | Yes | n/a | Yes |
| Games | Yes | Yes | n/a | Yes |
| Voice | ||||
| Headset Jack (2.5 mm) | - | Yes | n/a | - |
| Push-To-Talk | - | - | - | Yes |
| Speaker Phone | Yes | Yes | Yes | Yes |
| ZTE Z431 / Altair | LG VX-5400 | HTC 8XT | Casio G'zOne Boulder | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | ZTE Z431 / Altair | LG VX-5400 | HTC 8XT | Casio G'zOne Boulder |
