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Phone	Nokia Lumia 521 / 520	Samsung SCH-A990	ZTE Solar	Sony Ericsson W810	LG K3
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	4" diag. 5 : 3	?	4.5" diag. 16 : 9	?	4.5" 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 (~218 ppi) LCD (TFT/TFD)	176 x 220 pixels LCD (TFT/TFD)	480 x 854 pixels (~218 ppi) LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	?	60 Hz
Battery	1,430 mAh	1,000 mAh	2,070 mAh	?	1,940 mAh
Processor	1 GHz Qualcomm Snapdragon S4 MSM8270	?	1.2 GHz Qualcomm Snapdragon 200 MSM8625	?	1.1 GHz Qualcomm Snapdragon 210 (MSM8909)
RAM	512 MB	?	768 MB	?	1 GB
Storage	8 GB	? raw hardware	4 GB	? raw hardware	8 GB
Main Camera	5 megapixel	3 megapixel	5 megapixel	2 megapixel	5 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	720p HD	?	WVGA / 480p	?	720p HD
Front Camera	-	-	-	-	Yes
Weight	4.39 oz (124g)	4.4 oz (125g)	5.54 oz (157g)	3.49 oz (99g)	4.6 oz (130g)
Dimensions	4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm)	3.8" x 1.88" x 0.82" (97 x 48 x 20.8 mm)	5.24" x 2.6" x 0.39" (133 x 66 x 9.9 mm)	3.94" x 1.81" x 0.77" (100 x 46 x 19.6 mm)	5.24" x 2.67" x 0.37" (133 x 68 x 9.4 mm)
Form Factor	Slab	Clamshell	Slab	Slab	Slab
Platform / OS	Windows	(proprietary)	Android	(proprietary)	Android
Network Bands	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 *	CDMA: 850, 1900	WCDMA: 2, 5 GSM: 850, 1900	GSM: 850, 900, 1800, 1900	4G LTE: 2, 4, 5, 12, 25, 26, 41 WCDMA: 2, 4, 5 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900
Data Technology	HSPA+ 21	EVDO r0	HSPA 7.2	EDGE	LTE (Cat 4)
Features
Flashlight	-	Yes	-	Yes	Yes
GPS / Location	n/a	Yes	n/a	-	n/a
Accessibility
Adjustable Text Size	n/a	-	n/a	-	n/a
Hearing Aid Compatible	Yes M3, T4 (very tele-coil compatible)	Yes M3 (mostly compatible)	Yes M3, T3 (mostly tele-coil compatible)	-	Yes M3, T3 (mostly tele-coil compatible)
Multiple Languages	n/a	Yes	n/a	Yes	n/a
TTY/TDD (Digital)	Yes	Yes	Yes	Yes	Yes
Alerts
Extra Display	-	Yes	-	-	-
Ringer Profiles	-	-	-	Yes	-
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	Yes
Infrared (IR)	-	-	-	Yes	-
Mobile Hotspot	n/a	-	n/a	-	n/a
USB	Yes	Yes	Yes Micro-USB	Yes	Yes Micro-USB
Wi-Fi	Yes	-	Yes 4 (802.11 b,g,n)	-	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	n/a	Yes	n/a	Yes	n/a
Ringer ID	n/a	Yes	n/a	Yes	n/a
Voice Dialing	n/a	Yes	n/a	Yes	n/a
Customization
Custom Graphics	n/a	Yes	n/a	Yes	n/a
Custom Ringtones	n/a	Yes	n/a	Yes	n/a
Real-Music Ringers	n/a	Yes	n/a	Yes	n/a
Data & Network
Data Tethering	n/a	Yes	n/a	Yes	n/a
External Antenna Jack	n/a	-	n/a	Yes	n/a
WAP / Web Browser	n/a	Yes	n/a	Yes	n/a
Input
Predictive Text Entry	n/a	Yes	n/a	Yes	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Touch Screen	Yes Capacitive	-	Yes Capacitive	-	Yes Capacitive
Memory
Memory Card Slot	Yes	Yes	Yes	Yes	Yes
Messaging
Email Client	n/a	-	n/a	Yes	n/a
EMS / Picture Messaging	n/a	Yes	n/a	Yes	n/a
Instant Messaging	n/a	-	n/a	Yes	n/a
MMS	n/a	Yes	n/a	Yes	n/a
Text Messaging Templates	n/a	Yes	n/a	Yes	n/a
Music
FM Radio	-	-	-	Yes	-
Headphone Jack (3.5mm)	Yes	-	Yes	-	Yes
Music Player	n/a	Yes	n/a	Yes	n/a
Stereo Speakers	-	Yes	-	-	-
Photo & Video
TV Output	-	Yes	-	-	-
Productivity
Alarm	n/a	Yes	n/a	Yes	n/a
Calculator	n/a	Yes	n/a	Yes	n/a
Calendar	n/a	Yes	n/a	Yes	n/a
To-Do List	n/a	-	n/a	Yes	n/a
Voice Memo	n/a	Yes	n/a	Yes	n/a
Software
BREW	n/a	Yes	n/a	-	n/a
Games	n/a	Yes	n/a	Yes	n/a
Java (J2ME)	n/a	-	n/a	Yes	n/a
Voice
HD Voice	-	-	-	-	Yes
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	Nokia Lumia 521 / 520	Samsung SCH-A990	ZTE Solar	Sony Ericsson W810	LG K3
	X >	< X >	< X >	< X >	< X

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


Phone	Nokia Lumia 521 / 520	Samsung SCH-A990	ZTE Solar	Sony Ericsson W810	LG K3