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| Phone | Sony Ericsson Z500 | Nokia Lumia 521 / 520 | LG Harmony 4 / Xpression Plus 3 / Premier Pro Plus | LG Optimus L90 | 
| Current U.S. Carriers | (none) | (none) | (none) | (none) | 
| Global Availability | Released | Released | Released | Released | 
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? | 4" diag. 5 : 3 | 6.1" diag. 19.5 : 9 | 4.7" diag. 16 : 9 | 
| Display Resolution & Type | 128 x 160 pixels LCD (STN) | 480 x 800 pixels (~233 ppi) LCD (TFT/TFD) | 720 x 1560 pixels (~282 ppi) LCD (TFT/TFD) | 540 x 960 pixels (~234 ppi) LCD (TFT/TFD) | 
| Display Refresh | ? | ? | 60 Hz | 60 Hz | 
| Battery | ? | 1,430 mAh | 3,500 mAh | 2,460 mAh | 
| Processor | ? | 1 GHz Qualcomm Snapdragon S4 MSM8270 | 2 GHz MediaTek Helio P22 (MT6762) | 1.2 GHz Qualcomm Snapdragon 400 MSM8226 | 
| RAM | ? | 512 MB | 3 GB * | 1 GB | 
| Storage | ? raw hardware | 8 GB | 32 GB | 8 GB | 
| Main Camera | Yes | 5 megapixel | 13 megapixel | 5 megapixel | 
| Wide Camera | - | - | 5 megapixel | - | 
| Tele Camera | - | - | - | - | 
| Video Capture | ? | 720p HD | 1080p HD | 1080p HD | 
| Front Camera | - | - | 8 megapixel | Yes | 
| Weight | 3.88 oz (110g) | 4.39 oz (124g) | 6.1 oz (173g) | 4.37 oz (124g) | 
| Dimensions | 3.66" x 1.93" x 0.94" (93 x 49 x 23.9 mm) | 4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm) | 6.15" x 2.92" x 0.34" (156 x 74 x 8.6 mm) | 5.18" x 2.6" x 0.38" (132 x 66 x 9.7 mm) | 
| Form Factor | Clamshell | Slab | Slab | Slab | 
| Platform / OS | (proprietary) | Windows | Android | Android | 
| Network Bands | GSM: 850, 1800, 1900 | 4G LTE: 2, 4, 5, 12, 13, 14, 25, 26, 29, 30, 41, 66, 71 WCDMA: 2, 4, 5 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 | WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 | |
| Data Technology | EDGE | HSPA+ 21 | LTE (Cat 6) | HSPA+ 21 | 
| Features | ||||
| Fingerprint Reader | - | - | Yes stand-alone | - | 
| Flashlight | - | - | Yes | Yes | 
| GPS / Location | - | n/a | n/a | n/a | 
| Accessibility | ||||
| Adjustable Text Size | - | n/a | n/a | n/a | 
| Hearing Aid Compatible | - | Yes | Yes | Yes | 
| Multiple Languages | Yes | n/a | n/a | n/a | 
| TTY/TDD (Digital) | Yes | Yes | Yes | Yes | 
| Alerts | ||||
| Extra Display | Yes | - | - | - | 
| Ringer Profiles | Yes | - | - | - | 
| Connectivity | ||||
| Bluetooth | - | Yes | Yes Classic Audio | Yes Classic Audio | 
| Infrared (IR) | - | - | - | Yes | 
| Mobile Hotspot | - | n/a | n/a | n/a | 
| USB | Yes | Yes | Yes USB Type C | Yes | 
| Wi-Fi | - | Yes | Yes 4 (802.11 a,b,g,n) | Yes 4 (802.11 b,g,n) | 
| Contacts | ||||
| Picture ID | Yes | n/a | n/a | n/a | 
| Ringer ID | Yes | n/a | n/a | n/a | 
| Voice Dialing | Yes | n/a | n/a | n/a | 
| Customization | ||||
| Changeable Body Plates | Yes | - | - | - | 
| Custom Graphics | Yes | n/a | n/a | n/a | 
| Custom Ringtones | Yes | n/a | n/a | n/a | 
| Real-Music Ringers | - | n/a | n/a | n/a | 
| Data & Network | ||||
| Data Tethering | Yes | n/a | n/a | n/a | 
| WAP / Web Browser | Yes | n/a | n/a | n/a | 
| Input | ||||
| Predictive Text Entry | Yes | n/a | n/a | n/a | 
| Side Keys | Yes | Yes | Yes | Yes | 
| Touch Screen | - | Yes | Yes | Yes | 
| Memory | ||||
| Memory Card Slot | - | Yes | Yes | Yes | 
| Messaging | ||||
| Email Client | Yes | n/a | n/a | n/a | 
| EMS / Picture Messaging | Yes | n/a | n/a | n/a | 
| Instant Messaging | Yes | n/a | n/a | n/a | 
| MMS | Yes | n/a | n/a | n/a | 
| Text Messaging Templates | Yes | n/a | n/a | n/a | 
| Music | ||||
| FM Radio | - | - | Yes | - | 
| Headphone Jack (3.5mm) | - | Yes | Yes | Yes | 
| Music Player | - | n/a | n/a | n/a | 
| Productivity | ||||
| Alarm | Yes | n/a | n/a | n/a | 
| Calculator | Yes | n/a | n/a | n/a | 
| Calendar | Yes | n/a | n/a | n/a | 
| To-Do List | Yes | n/a | n/a | n/a | 
| Voice Memo | Yes | n/a | n/a | n/a | 
| Software | ||||
| Games | Yes | n/a | n/a | n/a | 
| Java (J2ME) | Yes | n/a | n/a | n/a | 
| Voice | ||||
| HD Voice | - | - | Yes | - | 
| Push-To-Talk | Yes * | - | - | - | 
| Speaker Phone | Yes | Yes | Yes | Yes | 
| * Some versions only | ||||
| Sony Ericsson Z500 | Nokia Lumia 521 / 520 | LG Harmony 4 / Xpression Plus 3 / Premier Pro Plus | LG Optimus L90 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
|  |  |  |  | |
| Phone | Sony Ericsson Z500 | Nokia Lumia 521 / 520 | LG Harmony 4 / Xpression Plus 3 / Premier Pro Plus | LG Optimus L90 | 
 







