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| Phone | Ericsson R520 | Motorola T191 | Ericsson T28 World | AT&T Maestro 3 | ZTE Maven 3 / Overture 3 / Prelude+ |
| Current U.S. Carriers | (none) | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size | ? | ? | ? |
6.5" diag. 20 : 9 |
5" diag. 16 : 9 |
| Display Resolution & Type | ? | 98 x 64 pixels | ? |
720 x 1600 pixels (~270 ppi) LCD (TFT/TFD) |
480 x 854 pixels (~196 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? | 60 Hz | 60 Hz |
| Battery | ? | ? | 500 mAh | 3,900 mAh | 2,070 mAh |
| Processor | ? | ? | ? | 2 GHz MediaTek Helio A22 (MT6761) | 1.1 GHz Qualcomm Snapdragon 210 (MSM8909) |
| RAM | ? | ? | ? | 3 GB | 2 GB * |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | 32 GB | 16 GB * |
| Main Camera | - | - | - | 13 megapixel | 5 megapixel |
| Wide Camera | - | - | - | 5 megapixel | - |
| Tele Camera | - | - | - | - | - |
| Video Capture | - | - | - | 1080p HD | 720p HD |
| Front Camera | - | - | - | 5 megapixel | 2 megapixel |
| Weight |
4.23 oz (120g) |
3.49 oz (99g) |
3.14 oz (89g) |
6.24 oz (177g) |
5.53 oz (157g) |
| Dimensions |
5.12" x 1.97" x 0.63" (130 x 50 x 16 mm) |
4.17" x 1.57" x 0.59" (106 x 40 x 15 mm) |
3.9" x 2" x 0.6" (99 x 51 x 15.2 mm) |
6.58" x 3.03" x 0.33" (167 x 77 x 8.4 mm) |
5.73" x 2.85" x 0.39" (146 x 72 x 9.9 mm) |
| Form Factor | Slab | Slab | Flip | Slab | Slab |
| Platform / OS | (proprietary) | (proprietary) | (proprietary) | Android | Android |
| Network Bands |
GSM: 900, 1800, 1900 |
GSM: 1900 |
GSM: 900, 1900 |
4G LTE: 2, 4, 5, 12, 14, 30 |
4G LTE: 2, 4, 5, 12 WCDMA: 2, 4, 5 GSM: 850, 1900 |
| Data Technology | GPRS | - | - | LTE (Cat 4) | LTE (Cat 4) |
| Features | |||||
| Barometer | - | - | - | Yes | - |
| Fingerprint Reader | - | - | - |
Yes stand-alone |
- |
| Flashlight | - | - | - | Yes | Yes |
| Accessibility | |||||
| Hearing Aid Compatible | - | - | - | Yes | Yes |
| Multiple Languages | Yes | Yes | - | n/a | n/a |
| TTY/TDD (Digital) | - | - | - | - | Yes |
| Alerts | |||||
| Ringer Profiles | Yes | Yes | Yes | - | - |
| Connectivity | |||||
| Bluetooth | Yes | - | - | Yes | Yes |
| Infrared (IR) | Yes | - | - | - | - |
| USB | - | - | - |
Yes USB Type C |
Yes Micro-USB |
| Wi-Fi | - | - | - |
Yes 5 (802.11 a,ac,b,g,n) |
Yes 4 (802.11 b,g,n) |
| Contacts | |||||
| Voice Dialing | Yes | Yes | Yes | n/a | n/a |
| Customization | |||||
| Custom Graphics | - | Yes | - | n/a | n/a |
| Custom Ringtones | Yes | Yes | Yes | n/a | n/a |
| Data & Network | |||||
| Data Tethering | Yes | 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 |
| Touch Screen | - | - | - | Yes | Yes |
| Memory | |||||
| Memory Card Slot | - | - | - | Yes | Yes |
| Messaging | |||||
| Text Messaging Templates | Yes | Yes | - | n/a | n/a |
| Music | |||||
| FM Radio | - | - | - | - | Yes |
| Headphone Jack (3.5mm) | - | - | - | Yes | Yes |
| Productivity | |||||
| Alarm | Yes | Yes | Yes | n/a | n/a |
| Calculator | Yes | Yes | Yes | n/a | n/a |
| Calendar | Yes | Yes | - | n/a | n/a |
| Voice Memo | Yes | Yes | - | n/a | n/a |
| Software | |||||
| Games | Yes | Yes | Yes | n/a | n/a |
| Voice | |||||
| HD Voice | - | - | - | Yes | Yes |
| Headset Jack (2.5 mm) | - | Yes | - | n/a | n/a |
| Speaker Phone | Yes | - | - | Yes | Yes |
| Ericsson R520 | Motorola T191 | Ericsson T28 World | AT&T Maestro 3 | ZTE Maven 3 / Overture 3 / Prelude+ | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Ericsson R520 | Motorola T191 | Ericsson T28 World | AT&T Maestro 3 | ZTE Maven 3 / Overture 3 / Prelude+ |
