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| Phone | Nokia Lumia 521 / 520 | HTC Desire EYE | Ericsson T66 | Samsung Rugby 4 | ZTE Blade Spark |
| Current U.S. Carriers | (none) | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size |
4" diag. 5 : 3 |
5.2" diag. 16 : 9 |
? |
2.4" diag. 4 : 3 |
5.5" diag. 16 : 9 |
| Display Resolution & Type |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
1080 x 1920 pixels (~424 ppi) LCD (TFT/TFD) |
? |
240 x 320 pixels (~167 ppi) LCD (TFT/TFD) |
720 x 1280 pixels (~267 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | ? | ? | 60 Hz |
| Battery | 1,430 mAh | 2,400 mAh | ? | 1,300 mAh | 3,140 mAh |
| Processor | 1 GHz Qualcomm Snapdragon S4 MSM8270 | 2.3 GHz Qualcomm Snapdragon 801 | ? | Intel XMM6230 | 1.4 GHz Qualcomm Snapdragon 425 (MSM8917) |
| RAM | 512 MB | 2 GB | ? | 128 MB | 2 GB |
| Storage | 8 GB | 16 GB | ? raw hardware | 256 MB | 16 GB |
| Main Camera | 5 megapixel | 13 megapixel | - | 3 megapixel | 13 megapixel |
| Wide Camera | - | - | - | - | - |
| Tele Camera | - | - | - | - | - |
| Video Capture | 720p HD | 1080p HD | - | QVGA (320 x 240) | 1080p HD |
| Front Camera | - | 13 megapixel | - | - | 5 megapixel |
| Weight |
4.39 oz (124g) |
5.43 oz (154g) |
2.08 oz (59g) |
5.22 oz (148g) |
6.12 oz (173g) |
| Dimensions |
4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm) |
5.97" x 2.91" x 0.33" (152 x 74 x 8.5 mm) |
3.62" x 1.61" x 0.69" (92 x 41 x 17.5 mm) |
4.25" x 2.17" x 0.85" (108 x 55 x 21.6 mm) |
6.14" x 3.06" x 0.38" (156 x 78 x 9.7 mm) |
| Form Factor | Slab | Slab | Slab | Clamshell | Slab |
| Platform / OS | Windows | Android | (proprietary) | (proprietary) | Android |
| Network Bands |
4G LTE: 2, 4, 5, 7, 17, 29 WCDMA: 1, 2, 4, 5 GSM: 850, 900, 1800, 1900 |
GSM: 900, 1800, 1900 |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
||
| Data Technology | HSPA+ 21 | LTE (Cat 4) | - | HSPA+ 21 | LTE (Cat 4) |
| Features | |||||
| Fingerprint Reader | - | - | - | - |
Yes stand-alone |
| Flashlight | - | Yes | - | - | Yes |
| GPS / Location | n/a | n/a | - | Yes | n/a |
| Ruggedized | - | - | - | Yes | - |
| Water-Resistant | - |
Yes IPX7 (snorkeling) |
- |
Yes IPX7 (snorkeling) |
- |
| Accessibility | |||||
| Adjustable Text Size | n/a | n/a | - | Yes | n/a |
| Hearing Aid Compatible | Yes | Yes | - | Yes | Yes |
| Multiple Languages | n/a | n/a | Yes | Yes | n/a |
| TTY/TDD (Digital) | Yes | Yes | - | Yes | Yes |
| Alerts | |||||
| Extra Display | - | - | - | Yes | - |
| Ringer Profiles | - | - | Yes | Yes | - |
| Connectivity | |||||
| Bluetooth | Yes |
Yes Classic Audio |
- |
Yes Classic Audio |
Yes Classic Audio |
| Mobile Hotspot | n/a | n/a | - | - | n/a |
| NFC | - | Yes | - | - | - |
| USB | Yes |
Yes Micro-USB |
- |
Yes Micro-USB |
Yes USB Type C |
| Wi-Fi | Yes |
Yes 4 (802.11 a,b,g,n) |
- |
Yes 4 (802.11 b,g,n) |
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 | |||||
| Custom Graphics | n/a | n/a | Yes | Yes | n/a |
| Custom Ringtones | n/a | n/a | Yes | Yes | n/a |
| Real-Music Ringers | n/a | n/a | - | Yes | n/a |
| Data & Network | |||||
| Data Tethering | n/a | n/a | - | - | n/a |
| WAP / Web Browser | n/a | n/a | Yes | Yes | n/a |
| Input | |||||
| Predictive Text Entry | n/a | n/a | Yes | Yes | n/a |
| Side Keys | Yes | Yes | Yes | Yes | Yes |
| Touch Screen | Yes | Yes | - | - | Yes |
| Memory | |||||
| Memory Card Slot | Yes | Yes | - | Yes | Yes |
| Messaging | |||||
| Email Client | n/a | n/a | - | Yes | 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 | Yes | n/a |
| Music | |||||
| FM Radio | - | Yes | - | - | - |
| Headphone Jack (3.5mm) | Yes | Yes | - | - | Yes |
| Music Player | n/a | n/a | - | Yes | n/a |
| Stereo Speakers | - | Yes | - | - | - |
| Photo & Video | |||||
| DLNA | - | Yes | - | - | - |
| Power | |||||
| Fast Charging | - | Yes | - | - | - |
| Productivity | |||||
| Alarm | n/a | n/a | Yes | Yes | n/a |
| Calculator | n/a | n/a | Yes | Yes | n/a |
| Calendar | n/a | n/a | Yes | Yes | n/a |
| To-Do List | n/a | n/a | Yes | Yes | n/a |
| Voice Memo | n/a | n/a | - | Yes | n/a |
| Software | |||||
| Games | n/a | n/a | Yes | Yes | n/a |
| Java (J2ME) | n/a | n/a | - | Yes | n/a |
| Voice | |||||
| HD Voice | - | Yes | - | - | Yes |
| Push-To-Talk | - | - | - | Yes | - |
| Speaker Phone | Yes | Yes | - | Yes | Yes |
| Nokia Lumia 521 / 520 | HTC Desire EYE | Ericsson T66 | Samsung Rugby 4 | ZTE Blade Spark | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Nokia Lumia 521 / 520 | HTC Desire EYE | Ericsson T66 | Samsung Rugby 4 | ZTE Blade Spark |











