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| Phone | AT&T Vista | ZTE Z331 | LG PM-225 | Samsung Galaxy Ring / Prevail 2 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
5.5" diag. 18 : 9 |
2.4" diag. 4 : 3 |
? |
4" diag. 5 : 3 |
| Display Resolution & Type |
720 x 1440 pixels (~293 ppi) LCD (TFT/TFD) |
176 x 220 pixels (~117 ppi) LCD (TFT/TFD) |
128 x 160 pixels LCD (STN) |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
| Display Refresh | 60 Hz | ? | ? | 60 Hz |
| Battery | 2,450 mAh | 950 mAh | 1,000 mAh | 1,750 mAh |
| Processor | 2 GHz MediaTek Helio A22 (MT6761V) | ? | ? | 1.4 GHz Qualcomm Snapdragon S2 MSM8655 |
| RAM | 3 GB | ? | ? | 1 GB |
| Storage | 32 GB | ? raw hardware | ? raw hardware | 4 GB |
| Main Camera | 8 megapixel | 3 megapixel | Yes | 5 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | 1080p HD | QCIF (176 x 144) | - | 720p HD |
| Front Camera | 5 megapixel | - | - | 1 megapixel |
| Weight |
5.51 oz (156g) |
4 oz (113g) |
3.35 oz (95g) |
3.4 oz (96g) |
| Dimensions |
5.88" x 2.82" x 0.35" (149 x 72 x 8.9 mm) |
3.84" x 2.02" x 0.69" (98 x 51 x 17.5 mm) |
3.53" x 1.76" x 0.93" (90 x 45 x 23.6 mm) |
4.83" x 2.48" x 0.47" (123 x 63 x 11.9 mm) |
| Form Factor | Slab | Clamshell | Clamshell | Slab |
| Platform / OS | Android | (proprietary) | (proprietary) | Android |
| Network Bands |
4G LTE: 2, 3, 4, 5, 7, 12, 14, 20, 30 WCDMA: 1, 2, 4, 5, 8 |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 AMPS: 850 |
CDMA: 800, 850, 1900 |
| Data Technology | LTE (Cat 4) | HSDPA 3.6 | 1xRTT | EVDO rA |
| Features | ||||
| Flashlight | Yes | - | - | - |
| GPS / Location | n/a | Yes | Yes | n/a |
| Accessibility | ||||
| Adjustable Text Size | n/a | - | - | n/a |
| Hearing Aid Compatible |
Yes M4, T4 (very tele-coil compatible) |
Yes M3, T4 (very tele-coil compatible) |
- |
Yes M4 (very compatible) |
| Multiple Languages | n/a | Yes | Yes | n/a |
| TTY/TDD (Digital) | - | Yes | Yes | Yes |
| Alerts | ||||
| Extra Display | - | Yes | Yes | - |
| Ringer Profiles | - | Yes | - | - |
| Connectivity | ||||
| Bluetooth | Yes | Yes | - | Yes |
| USB |
Yes USB Type C |
Yes Micro-USB |
Yes | Yes |
| Wi-Fi | Yes | - | - |
Yes 4 (802.11 a,b,g,n) |
| Contacts | ||||
| Picture ID | n/a | Yes | Yes | n/a |
| Ringer ID | n/a | Yes | Yes | n/a |
| Voice Dialing | n/a | - | Yes | n/a |
| Customization | ||||
| Custom Graphics | n/a | Yes | Yes | n/a |
| Custom Ringtones | n/a | Yes | Yes | n/a |
| Real-Music Ringers | n/a | Yes | - | n/a |
| Data & Network | ||||
| Data Tethering | n/a | Yes | - | n/a |
| WAP / Web Browser | n/a | Yes | Yes | n/a |
| Input | ||||
| Predictive Text Entry | n/a | Yes | Yes | n/a |
| Side Keys | Yes | Yes | Yes | Yes |
| Touch Screen |
Yes Capacitive |
- | - |
Yes Capacitive |
| Memory | ||||
| Memory Card Slot | Yes | Yes | - | Yes |
| Messaging | ||||
| Email Client | n/a | Yes | - | n/a |
| Instant Messaging | n/a | Yes | - | n/a |
| MMS | n/a | Yes | - | n/a |
| Text Messaging Templates | n/a | Yes | - | n/a |
| Music | ||||
| Headphone Jack (3.5mm) | Yes | - | - | Yes |
| Music Player | n/a | Yes | - | n/a |
| Photo & Video | ||||
| DLNA | - | - | - | Yes |
| Productivity | ||||
| Alarm | n/a | Yes | Yes | n/a |
| Calculator | n/a | Yes | Yes | n/a |
| Calendar | n/a | Yes | Yes | n/a |
| Voice Memo | n/a | Yes | Yes | n/a |
| Software | ||||
| Games | n/a | Yes | Yes | n/a |
| Java (J2ME) | n/a | Yes | Yes | n/a |
| Voice | ||||
| HD Voice | Yes | - | - | - |
| Headset Jack (2.5 mm) | n/a | - | Yes | n/a |
| Speaker Phone | Yes | Yes | Yes | Yes |
| AT&T Vista | ZTE Z331 | LG PM-225 | Samsung Galaxy Ring / Prevail 2 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | AT&T Vista | ZTE Z331 | LG PM-225 | Samsung Galaxy Ring / Prevail 2 |
