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| Phone | Nokia Lumia 521 / 520 | Asus ZenFone 4 | ZTE Speed | ZTE Blade Vantage | Samsung Messager II R560 / Vice R561 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size |
4" diag. 5 : 3 |
5.5" diag. 16 : 9 |
4.5" diag. 16 : 9 |
5" diag. 16 : 9 |
2.2" diag. 4 : 3 |
| Display Resolution & Type |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
1080 x 1920 pixels (~401 ppi) LCD (TFT/TFD) |
540 x 960 pixels (~245 ppi) LCD (TFT/TFD) |
480 x 854 pixels (~196 ppi) LCD (TFT/TFD) |
240 x 320 pixels (~182 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | 60 Hz | 60 Hz | ? |
| Battery | 1,430 mAh | 3,300 mAh | 2,000 mAh | 2,500 mAh | 960 mAh |
| Processor | 1 GHz Qualcomm Snapdragon S4 MSM8270 | 2.2 GHz Qualcomm Snapdragon 630 | 1.2 GHz Qualcomm Snapdragon 410 MSM8916 | 1.1 GHz Qualcomm Snapdragon 210 (MSM8909) | ? |
| RAM | 512 MB | 4 GB | 1 GB | 2 GB | ? |
| Storage | 8 GB | 64 GB | 8 GB | 16 GB | ? raw hardware |
| Main Camera | 5 megapixel | 12 megapixel | 5 megapixel | 8 megapixel | 2 megapixel |
| Wide Camera | - | Yes | - | - | - |
| Tele Camera | - | - | - | - | - |
| Video Capture | 720p HD | 4K UHD | 720p HD | 720p HD | ? |
| Front Camera | - | 8 megapixel | 2 megapixel | 2 megapixel | - |
| Weight |
4.39 oz (124g) |
5.47 oz (155g) |
4.8 oz (136g) |
5.29 oz (150g) |
4.33 oz (123g) |
| Dimensions |
4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm) |
6.12" x 2.96" x 0.3" (155 x 75 x 7.7 mm) |
5.3" x 2.6" x 0.4" (135 x 66 x 10.2 mm) |
5.73" x 2.85" x 0.36" (146 x 72 x 9.2 mm) |
4.49" x 1.9" x 0.72" (114 x 48 x 18.3 mm) |
| Form Factor | Slab | Slab | Slab | Slab | Slab |
| Platform / OS | Windows | Android | Android | Android | (proprietary) |
| Network Bands |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 17, 28 WCDMA: 1, 2, 4, 5, 8 GSM: 850, 900, 1800, 1900 |
4G LTE: 25, 26, 41 CDMA: 800, 850, 1900 |
4G LTE: 2, 4, 5, 13 |
CDMA: 850, 1700, 1900 |
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| Data Technology | HSPA+ 21 | LTE (Cat 12) | LTE (Cat 3) | LTE (Cat 4) | EVDO r0 |
| Features | |||||
| Fingerprint Reader | - |
Yes stand-alone |
- | - | - |
| Flashlight | - | Yes | - | Yes | - |
| GPS / Location | n/a | n/a | n/a | n/a | Yes |
| Accessibility | |||||
| Adjustable Text Size | n/a | n/a | n/a | n/a | - |
| Hearing Aid Compatible |
Yes M3, T4 (very tele-coil compatible) |
Yes M4, T3 (mostly tele-coil compatible) |
Yes M3, T4 (very tele-coil compatible) |
Yes M4, T4 (very tele-coil compatible) |
Yes M4, T3 (mostly tele-coil compatible) |
| Multiple Languages | n/a | n/a | n/a | n/a | Yes |
| TTY/TDD (Digital) | Yes | - | Yes | Yes | Yes |
| Connectivity | |||||
| Bluetooth | Yes | Yes | Yes | Yes | Yes |
| Mobile Hotspot | n/a | n/a | n/a | n/a | - |
| NFC | - | Yes | - | - | - |
| USB | Yes |
Yes USB Type C |
Yes Micro-USB |
Yes Micro-USB |
Yes Micro-USB |
| Wi-Fi | Yes |
Yes 5 (802.11 a,ac,b,g,n) |
Yes 4 (802.11 b,g,n) |
Yes 4 (802.11 b,g,n) |
- |
| Contacts | |||||
| Picture ID | n/a | n/a | n/a | n/a | Yes |
| Ringer ID | n/a | n/a | n/a | n/a | Yes |
| Voice Dialing | n/a | n/a | n/a | n/a | Yes |
| Customization | |||||
| Custom Graphics | n/a | n/a | n/a | n/a | Yes |
| Custom Ringtones | n/a | n/a | n/a | n/a | Yes |
| Real-Music Ringers | n/a | n/a | n/a | n/a | Yes |
| Data & Network | |||||
| Data Tethering | n/a | n/a | n/a | n/a | - |
| Dual-SIM | - | Yes | - | - | - |
| WAP / Web Browser | n/a | n/a | n/a | n/a | Yes |
| Input | |||||
| Predictive Text Entry | n/a | n/a | n/a | n/a | Yes |
| Side Keys | Yes | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | - | - | - | Yes |
| Touch Screen |
Yes Capacitive |
Yes Capacitive |
Yes Capacitive |
Yes Capacitive |
- |
| Memory | |||||
| Memory Card Slot | Yes | Yes | Yes | Yes | Yes |
| Messaging | |||||
| Email Client | n/a | n/a | n/a | n/a | Yes |
| Instant Messaging | n/a | n/a | n/a | n/a | - |
| MMS | n/a | n/a | n/a | n/a | Yes |
| Text Messaging Templates | n/a | n/a | n/a | n/a | Yes |
| Music | |||||
| Headphone Jack (3.5mm) | Yes | Yes | Yes | Yes | Yes |
| Music Player | n/a | n/a | n/a | n/a | Yes |
| Photo & Video | |||||
| Miracast | - | Yes | - | - | - |
| Power | |||||
| Fast Charging | - | Yes | - | - | - |
| Productivity | |||||
| Alarm | n/a | n/a | n/a | n/a | Yes |
| Calculator | n/a | n/a | n/a | n/a | Yes |
| Calendar | n/a | n/a | n/a | n/a | Yes |
| To-Do List | n/a | n/a | n/a | n/a | - |
| Voice Memo | n/a | n/a | n/a | n/a | Yes |
| Software | |||||
| BREW | n/a | n/a | n/a | n/a | Yes |
| Games | n/a | n/a | n/a | n/a | Yes |
| Voice | |||||
| HD Voice | - | - | Yes | Yes | - |
| Speaker Phone | Yes | Yes | Yes | Yes | Yes |
| Nokia Lumia 521 / 520 | Asus ZenFone 4 | ZTE Speed | ZTE Blade Vantage | Samsung Messager II R560 / Vice R561 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Nokia Lumia 521 / 520 | Asus ZenFone 4 | ZTE Speed | ZTE Blade Vantage | Samsung Messager II R560 / Vice R561 |
