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| Phone | Nokia Lumia 521 / 520 | ZTE Z221 | Kyocera DuraPlus | Kyocera 3225 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
4" diag. 5 : 3 |
2" diag. 4 : 3 |
2" diag. 4 : 3 |
? |
| Display Resolution & Type |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
240 x 320 pixels (~200 ppi) LCD (TFT/TFD) |
240 x 320 pixels (~200 ppi) LCD (TFT/TFD) |
? LCD (Grayscale) |
| Display Refresh | ? | ? | ? | ? |
| Battery | 1,430 mAh | 900 mAh | 1,650 mAh | ? |
| Processor | 1 GHz Qualcomm Snapdragon S4 MSM8270 | ? | ? | ? |
| RAM | 512 MB | ? | 128 MB | ? |
| Storage | 8 GB | 142 MB | 256 MB | ? raw hardware |
| Main Camera | 5 megapixel | Yes | - | - |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | 720p HD | QCIF (176 x 144) | - | - |
| Front Camera | - | - | - | - |
| Weight |
4.39 oz (124g) |
3.24 oz (92g) |
6.67 oz (189g) |
4.23 oz (120g) |
| Dimensions |
4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm) |
3.76" x 1.92" x 0.73" (96 x 49 x 18.5 mm) |
5.28" x 2.17" x 0.93" (134 x 55 x 23.6 mm) |
3.4" x 1.97" x 1.02" (86 x 50 x 25.9 mm) |
| Form Factor | Slab | Clamshell | Slab | Slab |
| Platform / OS | Windows | (proprietary) | (proprietary) | (proprietary) |
| Network Bands |
WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 |
CDMA: 800, 850, 1900 |
CDMA: 850, 1900 AMPS: 850 |
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| Data Technology | HSPA+ 21 | HSDPA 3.6 | EVDO rA | 1xRTT |
| Features | ||||
| Flashlight | - | - | Yes | - |
| GPS / Location | n/a | Yes | Yes | Yes |
| Ruggedized | - | - | Yes | - |
| Water-Resistant | - | - | Yes | - |
| Accessibility | ||||
| Adjustable Text Size | n/a | - | Yes | - |
| Hearing Aid Compatible |
Yes M3, T4 (very tele-coil compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
Yes M4, T4 (very tele-coil compatible) |
- |
| Multiple Languages | n/a | Yes | Yes | Yes |
| TTY/TDD (Digital) | Yes | Yes | Yes | Yes |
| Alerts | ||||
| Extra Display | - | Yes | - | - |
| Ringer Profiles | - | Yes | - | - |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | - |
| Mobile Hotspot | n/a | - | - | - |
| USB | Yes | Yes |
Yes Micro-USB |
- |
| Wi-Fi | Yes | - | - | - |
| Contacts | ||||
| Picture ID | n/a | - | - | - |
| Ringer ID | n/a | - | Yes | - |
| Voice Dialing | n/a | - | Yes | Yes |
| Customization | ||||
| Custom Graphics | n/a | Yes | Yes | Yes |
| Custom Ringtones | n/a | Yes | Yes | Yes |
| Real-Music Ringers | n/a | Yes | - | - |
| Data & Network | ||||
| Data Tethering | n/a | - | - | Yes |
| WAP / Web Browser | n/a | Yes | Yes | Yes |
| Input | ||||
| Predictive Text Entry | n/a | Yes | Yes | Yes |
| Side Keys | Yes | Yes | Yes | - |
| Touch Screen |
Yes Capacitive |
- | - | - |
| Memory | ||||
| Memory Card Slot | Yes | - | - | - |
| Messaging | ||||
| Email Client | n/a | Yes | - | - |
| EMS / Picture Messaging | n/a | - | - | Yes |
| Instant Messaging | n/a | Yes | - | - |
| MMS | n/a | Yes | Yes | - |
| Text Messaging Templates | n/a | Yes | Yes | - |
| Music | ||||
| Headphone Jack (3.5mm) | Yes | - | - | - |
| Music Player | n/a | - | - | - |
| Productivity | ||||
| Alarm | n/a | Yes | Yes | Yes |
| Calculator | n/a | Yes | Yes | Yes |
| Calendar | n/a | Yes | Yes | Yes |
| To-Do List | n/a | - | - | - |
| Voice Memo | n/a | Yes | Yes | - |
| Software | ||||
| BREW | n/a | - | Yes | Yes |
| Games | n/a | Yes | Yes | Yes |
| Java (J2ME) | n/a | Yes | Yes | - |
| Voice | ||||
| Headset Jack (2.5 mm) | n/a | - | Yes | Yes |
| Push-To-Talk | - | - | Yes | - |
| Speaker Phone | Yes | Yes | Yes | Yes |
| Nokia Lumia 521 / 520 | ZTE Z221 | Kyocera DuraPlus | Kyocera 3225 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Nokia Lumia 521 / 520 | ZTE Z221 | Kyocera DuraPlus | Kyocera 3225 |
