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| Phone | ZTE Z431 / Altair | CAT S61 | HTC Windows Phone 8S |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size |
2.4" diag. 4 : 3 |
5.2" diag. 16 : 9 |
4" diag. 5 : 3 |
| Display Resolution & Type |
320 x 240 pixels (~167 ppi) LCD (TFT/TFD) |
1080 x 1920 pixels (~424 ppi) LCD (TFT/TFD) |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | ? |
| Battery | 1,000 mAh | 4,500 mAh | 1,700 mAh |
| Processor | ? | 2.2 GHz Qualcomm Snapdragon 630 | 1 GHz Qualcomm Snapdragon S4 |
| RAM | ? | 4 GB | 512 MB |
| Storage | ? raw hardware | 64 GB | 4 GB |
| Main Camera | 2 megapixel | 16 megapixel | 5 megapixel |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | QVGA (320 x 240) | 4K UHD | 720p HD |
| Front Camera | - | 8 megapixel | - |
| Weight |
3.52 oz (100g) |
9.03 oz (256g) |
3.99 oz (113g) |
| Dimensions |
4.49" x 2.39" x 0.41" (114 x 61 x 10.4 mm) |
5.91" x 2.99" x 0.51" (150 x 76 x 13 mm) |
4.74" x 2.48" x 0.4" (121 x 63 x 10.3 mm) |
| Form Factor | Slab | Slab | Slab |
| Platform / OS | (proprietary) | Android | Windows |
| Network Bands |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 25, 26, 28, 29, 66 WCDMA: 1, 2, 4, 5, 8 GSM: 850, 900, 1800, 1900 |
WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 |
| Data Technology | ? | LTE (Cat 13) | HSPA+ 21 |
| Features | |||
| Barometer | - | Yes | - |
| Flashlight | - | Yes | Yes |
| GPS / Location | Yes | n/a | n/a |
| Ruggedized | - | Yes | - |
| Water-Resistant | - |
Yes IPX8 (SCUBA) |
- |
| Accessibility | |||
| Hearing Aid Compatible |
Yes M3, T3 (mostly tele-coil compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
| Multiple Languages | Yes | n/a | n/a |
| TTY/TDD (Digital) | Yes | - | Yes |
| Alerts | |||
| Ringer Profiles | Yes | - | - |
| Connectivity | |||
| Bluetooth | Yes | Yes | Yes |
| NFC | - | Yes | - |
| USB |
Yes Micro-USB |
Yes USB Type C |
Yes |
| Wi-Fi | - |
Yes 5 (802.11 a,ac,b,g,n) |
Yes 4 (802.11 b,g,n) |
| Contacts | |||
| Picture ID | Yes | n/a | n/a |
| Ringer ID | Yes | n/a | n/a |
| Customization | |||
| Custom Graphics | Yes | n/a | n/a |
| Custom Ringtones | Yes | n/a | n/a |
| Real-Music Ringers | Yes | n/a | n/a |
| Data & Network | |||
| Data Tethering | Yes | n/a | n/a |
| Dual-SIM | - | Yes * | - |
| 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 |
Yes Capacitive |
| Memory | |||
| Memory Card Slot | Yes | Yes | Yes |
| Messaging | |||
| Email Client | Yes | n/a | n/a |
| MMS | Yes | n/a | n/a |
| Text Messaging Templates | Yes | n/a | n/a |
| Music | |||
| FM Radio | - | Yes | - |
| Headphone Jack (3.5mm) | Yes | Yes | Yes |
| Music Player | Yes | n/a | n/a |
| Power | |||
| Fast Charging | - | Yes | - |
| Productivity | |||
| Alarm | Yes | n/a | n/a |
| Calculator | Yes | n/a | n/a |
| Calendar | Yes | n/a | n/a |
| Voice Memo | Yes | n/a | n/a |
| Software | |||
| BREW | Yes | n/a | n/a |
| Games | Yes | n/a | n/a |
| Voice | |||
| Speaker Phone | Yes | Yes | Yes |
| * Some versions only | |||
| ZTE Z431 / Altair | CAT S61 | HTC Windows Phone 8S | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | ZTE Z431 / Altair | CAT S61 | HTC Windows Phone 8S |
