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| Phone | Nokia 6255i / 6256i | ZTE Z431 / Altair | Huawei Ascend Q | AT&T Calypso |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? |
2.4" diag. 4 : 3 |
3.2" diag. 5 : 3 |
5.5" diag. 18 : 9 |
| Display Resolution & Type |
128 x 160 pixels LCD (TFT/TFD) |
320 x 240 pixels (~167 ppi) LCD (TFT/TFD) |
320 x 480 pixels (~180 ppi) LCD (TFT/TFD) |
480 x 960 pixels (~195 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | 60 Hz | 60 Hz |
| Battery | 1,070 mAh | 1,000 mAh | 1,500 mAh | 2,500 mAh |
| Processor | ? | ? | 800 MHz Qualcomm MSM7627A | 1.5 GHz MediaTek MT6739 |
| RAM | ? | ? | 512 MB | 1 GB |
| Storage | ? raw hardware | ? raw hardware | 2 GB | 16 GB |
| Main Camera | Yes | 2 megapixel | 3 megapixel | 5 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | ? | QVGA (320 x 240) | ? | 1080p HD |
| Front Camera | - | - | - | 5 megapixel |
| Weight |
4.23 oz (120g) |
3.52 oz (100g) |
4.6 oz (130g) |
6 oz (170g) |
| Dimensions |
3.36" x 1.87" x 0.97" (85 x 47 x 24.6 mm) |
4.49" x 2.39" x 0.41" (114 x 61 x 10.4 mm) |
4.8" x 2.3" x 0.5" (122 x 58 x 12.7 mm) |
5.91" x 2.87" x 0.39" (150 x 73 x 9.9 mm) |
| Form Factor | Clamshell | Slab | Slab | Slab |
| Platform / OS | (proprietary) | (proprietary) | Android | Android |
| Network Bands |
CDMA: 850, 1900 AMPS: 850 |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1700, 1900 |
4G LTE: 2, 4, 5, 12, 14, 30 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 |
| Data Technology | 1xRTT | ? | EVDO rA | LTE (Cat 4) |
| Features | ||||
| Flashlight | - | - | - | Yes |
| GPS / Location | Yes | Yes | n/a | n/a |
| Accessibility | ||||
| Hearing Aid Compatible |
Yes M4 (very compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
Yes M4, T4 (very tele-coil compatible) |
Yes M3, T4 (very tele-coil compatible) |
| Multiple Languages | Yes | Yes | n/a | n/a |
| TTY/TDD (Digital) | Yes | Yes | Yes | Yes |
| Alerts | ||||
| Extra Display | Yes | - | - | - |
| Ringer Profiles | Yes | Yes | - | - |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | Yes |
| Infrared (IR) | Yes | - | - | - |
| Mobile Hotspot | - | - | n/a | n/a |
| USB | Yes |
Yes Micro-USB |
Yes Micro-USB |
Yes USB Type C |
| Wi-Fi | - | - |
Yes 4 (802.11 b,g,n) |
Yes 4 (802.11 b,g,n) |
| Contacts | ||||
| Picture ID | Yes | Yes | n/a | n/a |
| Ringer ID | Yes | Yes | 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 | Yes | Yes | n/a | n/a |
| Data & Network | ||||
| Data Tethering | Yes | Yes | 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 | Yes | - |
| Touch Screen | - | - |
Yes Capacitive |
Yes Capacitive |
| Memory | ||||
| Memory Card Slot | Yes | Yes | Yes | Yes |
| Messaging | ||||
| Email Client | Yes | Yes | n/a | n/a |
| EMS / Picture Messaging | Yes * | - | n/a | n/a |
| Instant Messaging | - | - | n/a | n/a |
| MMS | Yes | Yes | n/a | n/a |
| Text Messaging Templates | Yes | Yes | n/a | n/a |
| Music | ||||
| FM Radio | Yes | - | - | - |
| Headphone Jack (3.5mm) | - | Yes | Yes | Yes |
| Music Player | Yes * | Yes | n/a | n/a |
| 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 | - | n/a | n/a |
| Voice Memo | Yes | Yes | n/a | n/a |
| Software | ||||
| BREW | Yes * | Yes | n/a | n/a |
| Games | Yes | Yes | n/a | n/a |
| Java (J2ME) | Yes * | - | n/a | n/a |
| Voice | ||||
| HD Voice | - | - | - | Yes |
| Headset Jack (2.5 mm) | Yes | - | n/a | n/a |
| Speaker Phone | Yes | Yes | Yes | Yes |
| * Some versions only | ||||
| Nokia 6255i / 6256i | ZTE Z431 / Altair | Huawei Ascend Q | AT&T Calypso | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Nokia 6255i / 6256i | ZTE Z431 / Altair | Huawei Ascend Q | AT&T Calypso |
