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Phone Nokia Lumia 521 / 520 Ericsson R520 Sanyo SCP-7050 ZTE Blade Vantage Audiovox CDM-8150X
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 4" diag.
5 : 3
? ? 5" diag.
16 : 9
?
Display Resolution & Type 480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
? 240 x 320 pixels
LCD (TFT/TFD)
480 x 854 pixels
(~196 ppi)
LCD (TFT/TFD)
?
Display Refresh ? ? ? 60 Hz ?
Battery 1,430 mAh ? 1,000 mAh 2,500 mAh ?
Processor 1 GHz Qualcomm Snapdragon S4 MSM8270 ? ? 1.1 GHz Qualcomm Snapdragon 210 (MSM8909) ?
RAM 512 MB ? ? 2 GB ?
Storage 8 GB ? raw hardware ? raw hardware 16 GB ? raw hardware
Main Camera 5 megapixel - - 8 megapixel -
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture 720p HD - - 720p HD -
Front Camera - - - 2 megapixel -
Weight 4.39 oz
(124g)
4.23 oz
(120g)
4.1 oz
(116g)
5.29 oz
(150g)
3.88 oz
(110g)
Dimensions 4.72" x 2.52" x 0.39"
(120 x 64 x 9.9 mm)
5.12" x 1.97" x 0.63"
(130 x 50 x 16 mm)
3.6" x 2" x 1.1"
(91 x 51 x 27.9 mm)
5.73" x 2.85" x 0.36"
(146 x 72 x 9.2 mm)
4.88" x 1.89" x 0.71"
(124 x 48 x 18 mm)
Form Factor Slab Slab Clamshell Slab Slab
Platform / OS Windows (proprietary) (proprietary) Android (proprietary)
Network Bands

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

*

GSM: 900, 1800, 1900

CDMA: 850, 1900

4G LTE: 2, 4, 5, 13

CDMA: 850, 1900

AMPS: 850

Data Technology HSPA+ 21 GPRS 1xRTT LTE (Cat 4) 1xRTT
Features 
Flashlight - - - Yes -
GPS / Location n/a - Yes n/a -
Ruggedized - - Yes - -
Accessibility
Adjustable Text Size n/a - Yes n/a -
Hearing Aid Compatible Yes - Yes Yes -
Multiple Languages n/a Yes Yes n/a Yes
TTY/TDD (Digital) Yes - Yes Yes -
Alerts
Extra Display - - Yes - -
Ringer Profiles - Yes - - -
Connectivity
Bluetooth Yes Yes Yes Yes -
Infrared (IR) - Yes - - -
Mobile Hotspot n/a - - n/a -
USB Yes - - Yes
Micro-USB
-
Wi-Fi Yes - - Yes
4 (802.11 b,g,n)
-
Contacts
Picture ID n/a - Yes n/a -
Ringer ID n/a - Yes n/a -
Voice Dialing n/a Yes Yes n/a Yes
Customization
Custom Graphics n/a - Yes n/a -
Custom Ringtones n/a Yes Yes n/a Yes
Real-Music Ringers n/a - - n/a -
Data & Network
Data Tethering n/a Yes Yes n/a -
WAP / Web Browser n/a Yes Yes n/a Yes
Input
Predictive Text Entry n/a Yes Yes n/a Yes
Side Keys Yes Yes Yes Yes Yes
Touch Screen Yes - - Yes -
Memory
Memory Card Slot Yes - - Yes -
Messaging
Email Client n/a - - n/a -
Instant Messaging n/a - - n/a -
MMS n/a - - n/a -
Text Messaging Templates n/a Yes Yes n/a -
Music
Headphone Jack (3.5mm) Yes - - Yes -
Music Player n/a - - n/a -
Productivity
Alarm n/a Yes Yes n/a -
Calculator n/a Yes Yes n/a Yes
Calendar n/a Yes Yes n/a Yes
To-Do List n/a - Yes n/a -
Voice Memo n/a Yes Yes n/a Yes
Software
Games n/a Yes Yes n/a -
Java (J2ME) n/a - Yes n/a -
Voice
Call Screening - - Yes - -
HD Voice - - - Yes -
Headset Jack (2.5 mm) n/a - Yes n/a Yes
Push-To-Talk - - Yes - -
Speaker Phone Yes Yes Yes Yes -
  Nokia Lumia 521 / 520 Ericsson R520 Sanyo SCP-7050 ZTE Blade Vantage Audiovox CDM-8150X
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Phone Nokia Lumia 521 / 520 Ericsson R520 Sanyo SCP-7050 ZTE Blade Vantage Audiovox CDM-8150X

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