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Phone	Nokia Lumia 521 / 520	Pantech Matrix Pro C820	BlackBerry Curve 8300
Current U.S. Carriers	(none)	(none)	(none)
Global Availability	Released	Released	Released
Display Size	4" diag. 5 : 3	2.4" diag. 4 : 3	?
Display Resolution & Type	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	240 x 320 pixels (~167 ppi) LCD (TFT/TFD)	320 x 240 pixels LCD (TFT/TFD)
Display Refresh	?	?	?
Battery	1,430 mAh	1,320 mAh	?
Processor	1 GHz Qualcomm Snapdragon S4 MSM8270	528 MHz ARM 11	?
RAM	512 MB	?	?
Storage	8 GB	? raw hardware	? raw hardware
Main Camera	5 megapixel	2 megapixel	2 megapixel
Wide Camera	-	-	-
Tele Camera	-	-	-
Video Capture	720p HD	QCIF (176 x 144)	-
Front Camera	-	-	-
Weight	4.39 oz (124g)	5.34 oz (151g)	3.92 oz (111g)
Dimensions	4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm)	4.2" x 2" x 0.9" (107 x 51 x 22.9 mm)	4.2" x 2.36" x 0.61" (107 x 60 x 15.5 mm)
Platform / OS	Windows	Windows Mobile Standard	BlackBerry OS
Network Bands	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 *	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	GSM: 850, 900, 1800, 1900
Data Technology	HSPA+ 21	HSDPA 3.6	EDGE
Features
Accessibility
Hearing Aid Compatible	Yes M3, T4 (very tele-coil compatible)	-	-
TTY/TDD (Digital)	Yes	Yes	Yes
Alerts
Ringer Profiles	-	Yes	Yes
Connectivity
Bluetooth	Yes	Yes	Yes
USB	Yes	Yes	Yes
Wi-Fi	Yes	-	-
Input
Side Keys	Yes	Yes	Yes
Text Keyboard, Hardware	-	Yes	Yes
Touch Screen	Yes Capacitive	-	-
Memory
Memory Card Slot	Yes	Yes	Yes
Music
Headphone Jack (3.5mm)	Yes	-	Yes
Voice
Push-To-Talk	-	-	Yes *
Speaker Phone	Yes	Yes	Yes
	* Some versions only
	Nokia Lumia 521 / 520	Pantech Matrix Pro C820	BlackBerry Curve 8300
	X >	< X >	< X

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


Phone	Nokia Lumia 521 / 520	Pantech Matrix Pro C820	BlackBerry Curve 8300