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| Phone | ZTE Z431 / Altair | Visible Midnight | Samsung Galaxy S8 | Motorola C290 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
2.4" diag. 4 : 3 |
6.5" diag. 20 : 9 |
5.8" diag. 18.5 : 9 |
? |
| Display Resolution & Type |
320 x 240 pixels (~167 ppi) LCD (TFT/TFD) |
720 x 1600 pixels (~269 ppi) LCD (TFT/TFD) |
1440 x 2960 pixels (~568 ppi) AMOLED |
128 x 160 pixels LCD (STN) |
| Display Refresh | ? | 60 Hz | 60 Hz | ? |
| Battery | 1,000 mAh | 4,000 mAh | 3,000 mAh | 1,020 mAh |
| Processor | ? | MediaTek Helio P22 (MT6762) | 2.4 GHz Qualcomm Snapdragon 835 (MSM8998) | ? |
| RAM | ? | 3 GB | 4 GB | ? |
| Storage | ? raw hardware | 32 GB | 64 GB | ? raw hardware |
| Main Camera | 2 megapixel | 13 megapixel | 12 megapixel | - |
| Wide Camera | - | 5 megapixel | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | QVGA (320 x 240) | 1080p HD | 4K UHD | - |
| Front Camera | - | 8 megapixel | 8 megapixel | - |
| Weight |
3.52 oz (100g) |
6.35 oz (180g) |
5.47 oz (155g) |
3.53 oz (100g) |
| Dimensions |
4.49" x 2.39" x 0.41" (114 x 61 x 10.4 mm) |
6.53" x 3" x 0.34" (166 x 76 x 8.6 mm) |
5.86" x 2.68" x 0.31" (149 x 68 x 8 mm) |
3.43" x 1.91" x 0.93" (87 x 49 x 23.6 mm) |
| Form Factor | Slab | Slab | Slab | Clamshell |
| Platform / OS | (proprietary) | Android | Android | (proprietary) |
| Network Bands |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
4G LTE: 2, 4, 5, 7, 12, 13, 66 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 30, 40, 41, 66 WCDMA: 1, 2, 4, 5, 8 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 AMPS: 850 |
| Data Technology | ? | LTE (Cat 4) | LTE (Cat 16) | 1xRTT |
| Features | ||||
| Fingerprint Reader | - |
Yes stand-alone |
Yes stand-alone |
- |
| Flashlight | - | Yes | Yes | - |
| GPS / Location | Yes | n/a | n/a | Yes |
| VR-ready | - | - | Yes | - |
| Water-Resistant | - | - |
Yes IPX8 (SCUBA) |
- |
| Accessibility | ||||
| Hearing Aid Compatible |
Yes M3, T3 (mostly tele-coil compatible) |
Yes M4, T3 (mostly tele-coil compatible) |
Yes M4, T3 (mostly tele-coil compatible) |
Yes M3 (mostly compatible) |
| Multiple Languages | Yes | n/a | n/a | Yes |
| TTY/TDD (Digital) | Yes | - | Yes | Yes |
| Alerts | ||||
| Ringer Profiles | Yes | - | - | - |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | - |
| MirrorLink | - | - | Yes | - |
| NFC | - | - | Yes | - |
| USB |
Yes Micro-USB |
Yes USB Type C |
Yes USB Type C |
Yes Mini-USB |
| Wi-Fi | - |
Yes 5 (802.11 a,ac,b,g,n) |
Yes 5 (802.11 a,ac,b,g,n) |
- |
| Contacts | ||||
| Picture ID | Yes | n/a | n/a | Yes |
| Ringer ID | Yes | n/a | n/a | Yes |
| Customization | ||||
| Custom Graphics | Yes | n/a | n/a | - |
| Custom Ringtones | Yes | n/a | n/a | - |
| Real-Music Ringers | Yes | n/a | n/a | Yes |
| Data & Network | ||||
| Data Tethering | Yes | n/a | n/a | - |
| External Antenna Jack | - | n/a | n/a | Yes |
| WAP / Web Browser | Yes | n/a | n/a | Yes |
| Input | ||||
| Predictive Text Entry | Yes | n/a | n/a | Yes |
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | Yes | - | - | - |
| Touch Screen | - |
Yes Capacitive |
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 | Yes |
| Music | ||||
| Headphone Jack (3.5mm) | Yes | Yes | Yes | - |
| Music Player | Yes | n/a | n/a | - |
| Power | ||||
| Fast Charging | - | - | Yes | - |
| Wireless Charging | - | Yes | Yes | - |
| Productivity | ||||
| Alarm | Yes | n/a | n/a | Yes |
| Calculator | Yes | n/a | n/a | Yes |
| Calendar | Yes | n/a | n/a | Yes |
| Voice Memo | Yes | n/a | n/a | Yes |
| Software | ||||
| BREW | Yes | n/a | n/a | - |
| Games | Yes | n/a | n/a | Yes |
| Java (J2ME) | - | n/a | n/a | Yes |
| Voice | ||||
| HD Voice | - | Yes | Yes | - |
| Headset Jack (2.5 mm) | - | n/a | n/a | Yes |
| Speaker Phone | Yes | Yes | Yes | Yes |
| ZTE Z431 / Altair | Visible Midnight | Samsung Galaxy S8 | Motorola C290 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | ZTE Z431 / Altair | Visible Midnight | Samsung Galaxy S8 | Motorola C290 |
