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Phone	Nokia Lumia 521 / 520	ZTE Blade Vantage	Pantech Duo C810	Kyocera 3225	Nokia N82
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	4" diag. 5 : 3	5" diag. 16 : 9	2.2" diag. 4 : 3	?	2.4" diag. 4 : 3
Display Resolution & Type	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	480 x 854 pixels (~196 ppi) LCD (TFT/TFD)	240 x 320 pixels (~182 ppi) LCD (TFT/TFD)	? LCD (Grayscale)	240 x 320 pixels (~167 ppi) LCD (TFT/TFD)
Display Refresh	?	60 Hz	?	?	?
Battery	1,430 mAh	2,500 mAh	1,320 mAh	?	1,050 mAh
Processor	1 GHz Qualcomm Snapdragon S4 MSM8270	1.1 GHz Qualcomm Snapdragon 210 (MSM8909)	ARM 920t PXA27x	?	332 MHz ARM 11
RAM	512 MB	2 GB	?	?	?
Storage	8 GB	16 GB	? raw hardware	? raw hardware	? raw hardware
Main Camera	5 megapixel	8 megapixel	1 megapixel	-	5 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	720p HD	720p HD	QVGA (320 x 240)	-	VGA (640 x 480)
Front Camera	-	2 megapixel	-	-	-
Weight	4.39 oz (124g)	5.29 oz (150g)	3.88 oz (110g)	4.23 oz (120g)	4.02 oz (114g)
Dimensions	4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm)	5.73" x 2.85" x 0.36" (146 x 72 x 9.2 mm)	4.01" x 1.97" x 0.78" (102 x 50 x 19.8 mm)	3.4" x 1.97" x 1.02" (86 x 50 x 25.9 mm)	4.41" x 1.98" x 0.68" (112 x 50 x 17.3 mm)
Form Factor	Slab	Slab	Slide	Slab	Slab
Platform / OS	Windows	Android	Windows Mobile Standard	(proprietary)	S60 (Symbian)
Network Bands	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 *	4G LTE: 2, 4, 5, 13	WCDMA: 2, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900 AMPS: 850	WCDMA: 1 GSM: 850, 900, 1800, 1900 *
Data Technology	HSPA+ 21	LTE (Cat 4)	HSDPA 1.8	1xRTT	EDGE
Features
Flashlight	-	Yes	-	-	-
GPS / Location	n/a	n/a	n/a	Yes	n/a
Accessibility
Hearing Aid Compatible	Yes	Yes	-	-	-
Multiple Languages	n/a	n/a	n/a	Yes	n/a
TTY/TDD (Digital)	Yes	Yes	-	Yes	-
Alerts
Ringer Profiles	-	-	Yes	-	Yes
Connectivity
Bluetooth	Yes	Yes Classic Audio	Yes Classic Audio	-	Yes Classic Audio
Mobile Hotspot	n/a	n/a	n/a	-	n/a
USB	Yes	Yes Micro-USB	Yes	-	Yes Micro-USB
Wi-Fi	Yes	Yes 4 (802.11 b,g,n)	-	-	Yes 802.11 b,g
Contacts
Picture ID	n/a	n/a	n/a	-	n/a
Ringer ID	n/a	n/a	n/a	-	n/a
Voice Dialing	n/a	n/a	n/a	Yes	n/a
Customization
Custom Graphics	n/a	n/a	n/a	Yes	n/a
Custom Ringtones	n/a	n/a	n/a	Yes	n/a
Real-Music Ringers	n/a	n/a	n/a	-	n/a
Data & Network
Data Tethering	n/a	n/a	n/a	Yes	n/a
WAP / Web Browser	n/a	n/a	n/a	Yes	n/a
Input
Predictive Text Entry	n/a	n/a	n/a	Yes	n/a
Side Keys	Yes	Yes	Yes	-	Yes
Text Keyboard, Hardware	-	-	Yes	-	-
Touch Screen	Yes	Yes	-	-	-
Memory
Memory Card Slot	Yes	Yes	Yes	-	Yes
Messaging
Email Client	n/a	n/a	n/a	-	n/a
EMS / Picture Messaging	n/a	n/a	n/a	Yes	n/a
Instant Messaging	n/a	n/a	n/a	-	n/a
MMS	n/a	n/a	n/a	-	n/a
Text Messaging Templates	n/a	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	-	n/a
Stereo Speakers	-	-	-	-	Yes
Photo & Video
DLNA	-	-	-	-	Yes
TV Output	-	-	-	-	Yes
Video Calling	n/a	n/a	n/a	-	n/a
Productivity
Alarm	n/a	n/a	n/a	Yes	n/a
Calculator	n/a	n/a	n/a	Yes	n/a
Calendar	n/a	n/a	n/a	Yes	n/a
To-Do List	n/a	n/a	n/a	-	n/a
Voice Memo	n/a	n/a	n/a	-	n/a
Software
BREW	n/a	n/a	n/a	Yes	n/a
Games	n/a	n/a	n/a	Yes	n/a
Java (J2ME)	n/a	n/a	n/a	-	n/a
Voice
HD Voice	-	Yes	-	-	-
Headset Jack (2.5 mm)	n/a	n/a	n/a	Yes	n/a
Push-To-Talk	-	-	-	-	Yes *
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Nokia Lumia 521 / 520	ZTE Blade Vantage	Pantech Duo C810	Kyocera 3225	Nokia N82
	X >	< X >	< X >	< X >	< X

NOTE: Differences are highlighted with bold / black text for visual clarity only.


Phone	Nokia Lumia 521 / 520	ZTE Blade Vantage	Pantech Duo C810	Kyocera 3225	Nokia N82