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| Phone | Samsung SGH-T819 | LG AX-390 / UX-390 | ZTE Savvy | Nokia Lumia 521 / 520 | 
| Current U.S. Carriers | (none) | (none) | (none) | (none) | 
| Global Availability | Released | Released | Released | Released | 
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? | ? | 4" diag. 5 : 3 | 4" diag. 5 : 3 | 
| Display Resolution & Type | 176 x 220 pixels LCD (TFT/TFD) | 128 x 128 pixels LCD (STN) | 480 x 800 pixels (~233 ppi) LCD (TFT/TFD) | 480 x 800 pixels (~233 ppi) LCD (TFT/TFD) | 
| Display Refresh | ? | ? | 60 Hz | ? | 
| Battery | ? | 1,000 mAh | 1,650 mAh | 1,430 mAh | 
| Processor | ? | ? | 1 GHz Qualcomm MSM8625 | 1 GHz Qualcomm Snapdragon S4 MSM8270 | 
| RAM | ? | ? | 768 MB | 512 MB | 
| Storage | ? raw hardware | ? raw hardware | 4 GB | 8 GB | 
| Main Camera | 1 megapixel | - | 5 megapixel | 5 megapixel | 
| Wide Camera | - | - | - | - | 
| Tele Camera | - | - | - | - | 
| Video Capture | QCIF (176 x 144) | - | WVGA / 480p | 720p HD | 
| Front Camera | - | - | - | - | 
| Weight | 3.46 oz (98g) | 3.74 oz (106g) | 4.43 oz (126g) | 4.39 oz (124g) | 
| Dimensions | 3.96" x 2.03" x 0.55" (101 x 52 x 14 mm) | 3.82" x 1.98" x 0.94" (97 x 50 x 23.9 mm) | 4.96" x 2.55" x 0.42" (126 x 65 x 10.7 mm) | 4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm) | 
| Form Factor | Slide | Clamshell | Slab | Slab | 
| Platform / OS | (proprietary) | (proprietary) | Android | Windows | 
| Network Bands | WCDMA: 4 GSM: 850, 900, 1800, 1900 | CDMA: 850, 1900 AMPS: 850 | CDMA: 850, 1900 | |
| Data Technology | WCDMA (UMTS) | 1xRTT | EVDO rA | HSPA+ 21 | 
| Features | ||||
| Flashlight | - | - | Yes | - | 
| GPS / Location | - | Yes | n/a | n/a | 
| Accessibility | ||||
| Adjustable Text Size | - | - | n/a | n/a | 
| Hearing Aid Compatible | - | Yes | Yes | Yes | 
| Multiple Languages | Yes | Yes | n/a | n/a | 
| TTY/TDD (Digital) | - | Yes | Yes | Yes | 
| Alerts | ||||
| Extra Display | - | Yes | - | - | 
| Ringer Profiles | Yes | - | - | - | 
| Connectivity | ||||
| Bluetooth | Yes Classic Audio | - | Yes Classic Audio | Yes | 
| Mobile Hotspot | - | - | n/a | n/a | 
| USB | Yes | - | Yes Micro-USB | Yes | 
| Wi-Fi | - | - | Yes 4 (802.11 b,g,n) | Yes | 
| Contacts | ||||
| Picture ID | Yes | Yes | n/a | n/a | 
| Ringer ID | Yes | - | n/a | n/a | 
| Voice Dialing | Yes | Yes | n/a | n/a | 
| Customization | ||||
| Custom Graphics | Yes | Yes | n/a | n/a | 
| Custom Ringtones | Yes | Yes | n/a | n/a | 
| Real-Music Ringers | Yes | Yes | n/a | n/a | 
| Data & Network | ||||
| Data Tethering | Yes | - | n/a | n/a | 
| WAP / Web Browser | Yes | Yes | n/a | n/a | 
| Input | ||||
| Predictive Text Entry | Yes | Yes | n/a | n/a | 
| Side Keys | Yes | Yes | Yes | Yes | 
| Touch Screen | - | - | Yes | Yes | 
| Memory | ||||
| Memory Card Slot | Yes | - | Yes | Yes | 
| Messaging | ||||
| Email Client | - | - | n/a | n/a | 
| EMS / Picture Messaging | Yes | - | n/a | n/a | 
| Instant Messaging | Yes | - | n/a | n/a | 
| MMS | Yes | Yes | n/a | n/a | 
| Text Messaging Templates | Yes | - | n/a | n/a | 
| Music | ||||
| Headphone Jack (3.5mm) | - | - | Yes | Yes | 
| Music Player | Yes | - | n/a | n/a | 
| Photo & Video | ||||
| DLNA | - | - | Yes | - | 
| Productivity | ||||
| Alarm | Yes | Yes | n/a | n/a | 
| Calculator | Yes | Yes | n/a | n/a | 
| Calendar | Yes | Yes | n/a | n/a | 
| To-Do List | Yes | - | n/a | n/a | 
| Voice Memo | - | Yes | n/a | n/a | 
| Software | ||||
| BREW | - | Yes | n/a | n/a | 
| Games | Yes | Yes | n/a | n/a | 
| Java (J2ME) | Yes | - | n/a | n/a | 
| Voice | ||||
| Headset Jack (2.5 mm) | - | Yes | n/a | n/a | 
| Push-To-Talk | - | Yes | - | - | 
| Speaker Phone | Yes | Yes | Yes | Yes | 
| Samsung SGH-T819 | LG AX-390 / UX-390 | ZTE Savvy | Nokia Lumia 521 / 520 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
|  |  |  |  | |
| Phone | Samsung SGH-T819 | LG AX-390 / UX-390 | ZTE Savvy | Nokia Lumia 521 / 520 | 
 







