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| Phone | AT&T Maestro 3 | Nokia Lumia 521 / 520 | Kyocera DuraXE Epic / DuraXA Equip | Siemens M75 |
| Current U.S. Carriers | (none) | (none) | US Cellular | (none) |
| Global Availability | Released | Released | Released | Not yet released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
6.5" diag. 20 : 9 |
4" diag. 5 : 3 |
2.6" diag. 4 : 3 |
? |
| Display Resolution & Type |
720 x 1600 pixels (~270 ppi) LCD (TFT/TFD) |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
240 x 320 pixels (~154 ppi) LCD (TFT/TFD) |
132 x 176 pixels LCD (TFT/TFD) |
| Display Refresh | 60 Hz | ? | ? | ? |
| Battery | 3,900 mAh | 1,430 mAh | 1,770 mAh | 750 mAh |
| Processor | 2 GHz MediaTek Helio A22 (MT6761) | 1 GHz Qualcomm Snapdragon S4 MSM8270 | 1.2 GHz Qualcomm Snapdragon 215 | ? |
| RAM | 3 GB | 512 MB | 2 GB | ? |
| Storage | 32 GB | 8 GB | 16 GB | ? raw hardware |
| Main Camera | 13 megapixel | 5 megapixel | 5 megapixel | 1 megapixel |
| Wide Camera | 5 megapixel | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | 1080p HD | 720p HD | 720p HD | ? |
| Front Camera | 5 megapixel | - | - | - |
| Weight |
6.24 oz (177g) |
4.39 oz (124g) |
6.8 oz (193g) |
3.88 oz (110g) |
| Dimensions |
6.58" x 3.03" x 0.33" (167 x 77 x 8.4 mm) |
4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm) |
4.36" x 2.22" x 1.07" (111 x 56 x 27.2 mm) |
4.35" x 2.03" x 0.82" (110 x 52 x 20.8 mm) |
| Form Factor | Slab | Slab | Clamshell | Slab |
| Platform / OS | Android | Windows | (proprietary) | (proprietary) |
| Network Bands |
4G LTE: 2, 4, 5, 12, 14, 30 |
4G LTE: 2, 4, 5, 12, 14, 66 WCDMA: 1, 2, 4, 5 |
GSM: 900, 1800, 1900 |
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| Data Technology | LTE (Cat 4) | HSPA+ 21 | LTE (Cat 4) | GPRS |
| Features | ||||
| Barometer | Yes | - | Yes | - |
| Fingerprint Reader |
Yes stand-alone |
- | - | - |
| Flashlight | Yes | - | Yes | - |
| GPS / Location | n/a | n/a | Yes | - |
| Ruggedized | - | - | Yes | Yes |
| Water-Resistant | - | - |
Yes IPX8 (SCUBA) |
- |
| Accessibility | ||||
| Adjustable Text Size | n/a | n/a | Yes | - |
| Hearing Aid Compatible |
Yes M4, T4 (very tele-coil compatible) |
Yes M3, T4 (very tele-coil compatible) |
Yes M4, T4 (very tele-coil compatible) |
- |
| Multiple Languages | n/a | n/a | Yes | Yes |
| TTY/TDD (Digital) | - | Yes | Yes | - |
| Alerts | ||||
| Extra Display | - | - | Yes | - |
| Ringer Profiles | - | - | - | Yes |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | Yes |
| Infrared (IR) | - | - | - | Yes |
| Mobile Hotspot | n/a | n/a | Yes | - |
| USB |
Yes USB Type C |
Yes |
Yes USB Type C |
Yes |
| Wi-Fi |
Yes 5 (802.11 a,ac,b,g,n) |
Yes |
Yes 4 (802.11 a,b,g,n) |
- |
| Contacts | ||||
| Picture ID | n/a | n/a | Yes | Yes |
| Ringer ID | n/a | n/a | Yes | Yes |
| Voice Dialing | n/a | n/a | Yes | - |
| Customization | ||||
| Custom Graphics | n/a | n/a | Yes | Yes |
| Custom Ringtones | n/a | n/a | Yes | Yes |
| Real-Music Ringers | n/a | n/a | Yes | - |
| Data & Network | ||||
| Data Tethering | n/a | n/a | Yes | Yes |
| WAP / Web Browser | n/a | n/a | Yes | Yes |
| Input | ||||
| Predictive Text Entry | n/a | n/a | Yes | Yes |
| Side Keys | Yes | Yes | Yes | Yes |
| Touch Screen |
Yes Capacitive |
Yes Capacitive |
- | - |
| Memory | ||||
| Memory Card Slot | Yes | Yes | Yes | Yes |
| Messaging | ||||
| Email Client | n/a | n/a | Yes | Yes |
| EMS / Picture Messaging | n/a | n/a | - | Yes |
| Instant Messaging | n/a | n/a | - | - |
| MMS | n/a | n/a | Yes | Yes |
| Text Messaging Templates | n/a | n/a | Yes | - |
| Music | ||||
| FM Radio | - | - | Yes | - |
| Headphone Jack (3.5mm) | Yes | Yes | Yes | - |
| Music Player | n/a | n/a | Yes | Yes |
| Productivity | ||||
| Alarm | n/a | n/a | Yes | Yes |
| Calculator | n/a | n/a | Yes | Yes |
| Calendar | n/a | n/a | Yes | Yes |
| To-Do List | n/a | n/a | - | Yes |
| Voice Memo | n/a | n/a | Yes | Yes |
| Software | ||||
| Games | n/a | n/a | - | Yes |
| Java (J2ME) | n/a | n/a | - | Yes |
| Voice | ||||
| HD Voice | Yes | - | Yes | - |
| Push-To-Talk | - | - | Yes | Yes |
| Speaker Phone | Yes | Yes | Yes | Yes |
| AT&T Maestro 3 | Nokia Lumia 521 / 520 | Kyocera DuraXE Epic / DuraXA Equip | Siemens M75 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | AT&T Maestro 3 | Nokia Lumia 521 / 520 | Kyocera DuraXE Epic / DuraXA Equip | Siemens M75 |
