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| Phone | Nokia Lumia 521 / 520 | ZTE Blade Vantage | Casio G'zOne Boulder | Samsung Ace SPH-i325 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
4" diag. 5 : 3 |
5" diag. 16 : 9 |
2" diag. 4 : 3 |
2.3" diag. 4 : 3 |
| Display Resolution & Type |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
480 x 854 pixels (~196 ppi) LCD (TFT/TFD) |
240 x 320 pixels (~200 ppi) LCD (TFT/TFD) |
320 x 240 pixels (~174 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | ? | ? |
| Battery | 1,430 mAh | 2,500 mAh | 810 mAh | 1,300 mAh |
| Processor | 1 GHz Qualcomm Snapdragon S4 MSM8270 | 1.1 GHz Qualcomm Snapdragon 210 (MSM8909) | ? | 416 MHz PXA270 |
| RAM | 512 MB | 2 GB | ? | ? |
| Storage | 8 GB | 16 GB | ? raw hardware | ? raw hardware |
| Main Camera | 5 megapixel | 8 megapixel | 1 megapixel | 1 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | 720p HD | 720p HD | ? | QVGA (320 x 240) |
| Front Camera | - | 2 megapixel | - | - |
| Weight |
4.39 oz (124g) |
5.29 oz (150g) |
4.9 oz (139g) |
3.9 oz (111g) |
| Dimensions |
4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm) |
5.73" x 2.85" x 0.36" (146 x 72 x 9.2 mm) |
3.9" x 2" x 0.9" (99 x 51 x 22.9 mm) |
4.65" x 2.32" x 0.46" (118 x 59 x 11.7 mm) |
| Form Factor | Slab | Slab | Clamshell | Slab |
| Platform / OS | Windows | Android | (proprietary) | Windows Mobile Standard |
| Network Bands |
4G LTE: 2, 4, 5, 13 |
CDMA: 850, 1900 |
CDMA: 850, 1900 GSM: 900, 1800 |
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| Data Technology | HSPA+ 21 | LTE (Cat 4) | EVDO rA | EVDO r0 |
| Features | ||||
| Flashlight | - | Yes | Yes | - |
| GPS / Location | n/a | n/a | Yes | n/a |
| Ruggedized | - | - | Yes | - |
| Water-Resistant | - | - | Yes | - |
| Accessibility | ||||
| Hearing Aid Compatible |
Yes M3, T4 (very tele-coil compatible) |
Yes M4, T4 (very tele-coil compatible) |
Yes M4, T4 (very tele-coil compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
| Multiple Languages | n/a | n/a | Yes | n/a |
| TTY/TDD (Digital) | Yes | Yes | Yes | Yes |
| Alerts | ||||
| Extra Display | - | - | Yes | - |
| Ringer Profiles | - | - | - | Yes |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | Yes |
| Mobile Hotspot | n/a | n/a | - | n/a |
| USB | Yes |
Yes Micro-USB |
Yes | Yes |
| Wi-Fi | Yes |
Yes 4 (802.11 b,g,n) |
- | - |
| Contacts | ||||
| Picture ID | n/a | n/a | Yes | n/a |
| Ringer ID | n/a | n/a | Yes | n/a |
| Voice Dialing | n/a | n/a | Yes | n/a |
| Customization | ||||
| Changeable Body Plates | - | - | Yes | - |
| Custom Graphics | n/a | n/a | Yes | n/a |
| Custom Ringtones | n/a | n/a | Yes | n/a |
| Real-Music Ringers | n/a | n/a | - | n/a |
| Data & Network | ||||
| Data Tethering | n/a | n/a | Yes | n/a |
| WAP / Web Browser | n/a | n/a | Yes | n/a |
| Input | ||||
| Predictive Text Entry | n/a | n/a | Yes | n/a |
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | - | - | Yes |
| Touch Screen |
Yes Capacitive |
Yes Capacitive |
- | - |
| Memory | ||||
| Memory Card Slot | Yes | Yes | Yes | Yes |
| Messaging | ||||
| Email Client | n/a | n/a | - | n/a |
| EMS / Picture Messaging | n/a | n/a | Yes | n/a |
| Instant Messaging | n/a | n/a | - | n/a |
| MMS | n/a | n/a | Yes | n/a |
| Text Messaging Templates | n/a | n/a | Yes | n/a |
| Music | ||||
| Headphone Jack (3.5mm) | Yes | Yes | - | - |
| Music Player | n/a | n/a | Yes | n/a |
| Productivity | ||||
| Alarm | n/a | n/a | Yes | n/a |
| Calculator | n/a | n/a | Yes | n/a |
| Calendar | n/a | n/a | Yes | n/a |
| To-Do List | n/a | n/a | - | n/a |
| Voice Memo | n/a | n/a | Yes | n/a |
| Software | ||||
| BREW | n/a | n/a | Yes | n/a |
| Games | n/a | n/a | Yes | n/a |
| Voice | ||||
| HD Voice | - | Yes | - | - |
| Push-To-Talk | - | - | Yes | - |
| Speaker Phone | Yes | Yes | Yes | Yes |
| Nokia Lumia 521 / 520 | ZTE Blade Vantage | Casio G'zOne Boulder | Samsung Ace SPH-i325 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Nokia Lumia 521 / 520 | ZTE Blade Vantage | Casio G'zOne Boulder | Samsung Ace SPH-i325 |
