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Phone	Nokia Lumia 521 / 520	Ericsson R520	Samsung SPH-N270 (Matrix Phone)	Kyocera Slider Remix KX5 / Slider Sonic	Nokia N-Gage QD
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	4" diag. 5 : 3	?	?	?	?
Display Resolution & Type	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	?	128 x 160 pixels LCD (TFT/TFD)	176 x 220 pixels LCD (TFT/TFD)	176 x 208 pixels LCD (Color)
Display Refresh	?	?	?	?	?
Battery	1,430 mAh	?	1,000 mAh	900 mAh	1,070 mAh
Processor	1 GHz Qualcomm Snapdragon S4 MSM8270	?	?	?	?
RAM	512 MB	?	?	?	?
Storage	8 GB	? raw hardware	? raw hardware	? raw hardware	? raw hardware
Main Camera	5 megapixel	-	-	1 megapixel	-
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	720p HD	-	-	?	-
Front Camera	-	-	-	-	-
Weight	4.39 oz (124g)	4.23 oz (120g)	4.66 oz (132g)	3.88 oz (110g)	5.04 oz (143g)
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)	4.53" x 2.28" x 0.79" (115 x 58 x 20.1 mm)	3.89" x 1.85" x 0.9" (99 x 47 x 22.9 mm)	4.65" x 2.68" x 0.87" (118 x 68 x 22.1 mm)
Form Factor	Slab	Slab	Slide	Slide	Slab
Platform / OS	Windows	(proprietary)	(proprietary)	(proprietary)	S60 (Symbian)
Network Bands	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 *	GSM: 900, 1800, 1900	CDMA: 850, 1900 AMPS: 850	CDMA: 850, 1900 AMPS: 850 *	GSM: 850, 1900 *
Data Technology	HSPA+ 21	GPRS	-	1xRTT	GPRS
Features
GPS / Location	n/a	-	Yes	Yes	n/a
Accessibility
Hearing Aid Compatible	Yes M3, T4 (very tele-coil compatible)	-	-	Yes M3 (mostly compatible)	-
Multiple Languages	n/a	Yes	Yes	-	n/a
TTY/TDD (Digital)	Yes	-	-	Yes	-
Alerts
Ringer Profiles	-	Yes	-	-	Yes
Connectivity
Bluetooth	Yes	Yes	-	Yes *	Yes
Infrared (IR)	-	Yes	-	-	-
Mobile Hotspot	n/a	-	-	-	n/a
USB	Yes	-	-	-	-
Wi-Fi	Yes	-	-	-	-
Contacts
Picture ID	n/a	-	Yes	Yes	n/a
Ringer ID	n/a	-	Yes	Yes	n/a
Voice Dialing	n/a	Yes	Yes	Yes	n/a
Customization
Custom Graphics	n/a	-	-	Yes	n/a
Custom Ringtones	n/a	Yes	-	Yes	n/a
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
Input
Predictive Text Entry	n/a	Yes	Yes	Yes	n/a
Side Keys	Yes	Yes	-	Yes	-
Touch Screen	Yes Capacitive	-	-	-	-
Memory
Memory Card Slot	Yes	-	-	Yes	Yes
Messaging
Email Client	n/a	-	-	-	n/a
EMS / Picture Messaging	n/a	-	-	Yes	n/a
Instant Messaging	n/a	-	-	Yes *	n/a
MMS	n/a	-	-	Yes	n/a
Text Messaging Templates	n/a	Yes	-	-	n/a
Music
Headphone Jack (3.5mm)	Yes	-	-	-	-
Music Player	n/a	-	-	Yes	n/a
Productivity
Alarm	n/a	Yes	Yes	Yes	n/a
Calculator	n/a	Yes	Yes	Yes	n/a
Calendar	n/a	Yes	Yes	Yes	n/a
To-Do List	n/a	-	Yes	-	n/a
Voice Memo	n/a	Yes	Yes	Yes *	n/a
Software
BREW	n/a	-	-	Yes *	n/a
Games	n/a	Yes	-	Yes	n/a
Java (J2ME)	n/a	-	-	Yes *	n/a
Voice
Headset Jack (2.5 mm)	n/a	-	Yes	Yes	n/a
Speaker Phone	Yes	Yes	-	Yes	Yes
	* Some versions only
	Nokia Lumia 521 / 520	Ericsson R520	Samsung SPH-N270 (Matrix Phone)	Kyocera Slider Remix KX5 / Slider Sonic	Nokia N-Gage QD
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NOTE: Differences are highlighted with bold / black text for visual clarity only.


Phone	Nokia Lumia 521 / 520	Ericsson R520	Samsung SPH-N270 (Matrix Phone)	Kyocera Slider Remix KX5 / Slider Sonic	Nokia N-Gage QD