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Phone	Nokia 3555	Nokia Lumia 521 / 520	Samsung SGH-X640	Motorola V878	HTC Radar
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	1.8" diag. 4 : 3	4" diag. 5 : 3	?	?	3.8" diag. 5 : 3
Display Resolution & Type	128 x 160 pixels (~114 ppi) LCD (TFT/TFD)	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (TFT/TFD)	128 x 160 pixels LCD (TFT/TFD)	480 x 800 pixels (~246 ppi) LCD (TFT/TFD)
Display Refresh	?	?	?	?	?
Battery	?	1,430 mAh	800 mAh	?	1,520 mAh
Processor	?	1 GHz Qualcomm Snapdragon S4 MSM8270	?	?	1 GHz Qualcomm Snapdragon S2 MSM8255
RAM	?	512 MB	?	?	?
Storage	? raw hardware	8 GB	? raw hardware	? raw hardware	8 GB
Main Camera	Yes	5 megapixel	Yes	Yes	5 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	QCIF (176 x 144)	720p HD	-	?	720p HD
Front Camera	-	-	-	-	Yes
Weight	3.32 oz (94g)	4.39 oz (124g)	3 oz (85g)	2.82 oz (80g)	4.83 oz (137g)
Dimensions	3.94" x 1.75" x 0.83" (100 x 44 x 21 mm)	4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm)	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	3.23" x 1.65" x 0.85" (82 x 42 x 21.6 mm)	4.7" x 2.4" x 0.43" (119 x 61 x 10.9 mm)
Form Factor	Clamshell	Slab	Clamshell	Clamshell	Slab
Platform / OS	(proprietary)	Windows	(proprietary)	(proprietary)	Windows
Network Bands	WCDMA: 4 GSM: 850, 900, 1800, 1900 *	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 *	GSM: 900, 1800, 1900	GSM: 900, 1800, 1900	WCDMA: 1, 2, 4 GSM: 850, 900, 1800, 1900 *
Data Technology	WCDMA (UMTS)	HSPA+ 21	GPRS	GPRS	HSPA 14.4
Features
GPS / Location	-	n/a	-	-	n/a
Accessibility
Hearing Aid Compatible	Yes * M3, T3 (mostly tele-coil compatible)	Yes M3, T4 (very tele-coil compatible)	-	-	Yes M3, T3 (mostly tele-coil compatible)
Multiple Languages	Yes	n/a	Yes	Yes	n/a
TTY/TDD (Digital)	-	Yes	-	-	Yes
Alerts
Extra Display	Yes	-	-	Yes	-
Ringer Profiles	Yes	-	-	Yes	-
Connectivity
Bluetooth	Yes	Yes	-	-	Yes
Mobile Hotspot	-	n/a	-	-	n/a
USB	Yes	Yes	-	Yes	Yes Micro-USB
Wi-Fi	-	Yes	-	-	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	Yes	n/a	Yes	Yes	n/a
Ringer ID	Yes	n/a	Yes	Yes	n/a
Voice Dialing	Yes	n/a	-	Yes	n/a
Customization
Custom Graphics	Yes	n/a	Yes	Yes	n/a
Custom Ringtones	Yes	n/a	Yes	Yes	n/a
Real-Music Ringers	Yes	n/a	-	-	n/a
Data & Network
Data Tethering	-	n/a	-	Yes	n/a
WAP / Web Browser	Yes	n/a	Yes	Yes	n/a
Input
Predictive Text Entry	Yes	n/a	Yes	Yes	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Touch Screen	-	Yes Capacitive	-	-	Yes Capacitive
Memory
Memory Card Slot	Yes	Yes	-	-	-
Messaging
Email Client	-	n/a	-	-	n/a
EMS / Picture Messaging	-	n/a	Yes	Yes	n/a
Instant Messaging	Yes *	n/a	-	-	n/a
MMS	Yes	n/a	Yes	Yes	n/a
Text Messaging Templates	Yes	n/a	Yes	-	n/a
Music
FM Radio	-	-	-	-	Yes
Headphone Jack (3.5mm)	-	Yes	-	-	Yes
Music Player	Yes	n/a	-	-	n/a
Productivity
Alarm	Yes	n/a	Yes	Yes	n/a
Calculator	Yes	n/a	Yes	Yes	n/a
Calendar	Yes	n/a	Yes	Yes	n/a
To-Do List	Yes	n/a	Yes	-	n/a
Voice Memo	Yes	n/a	Yes	Yes	n/a
Software
Games	Yes	n/a	Yes	Yes	n/a
Java (J2ME)	Yes	n/a	Yes	Yes	n/a
Voice
Headset Jack (2.5 mm)	Yes	n/a	Yes	-	n/a
Speaker Phone	Yes	Yes	Yes	-	Yes
	* Some versions only
	Nokia 3555	Nokia Lumia 521 / 520	Samsung SGH-X640	Motorola V878	HTC Radar
	X >	< X >	< X >	< X >	< X

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


Phone	Nokia 3555	Nokia Lumia 521 / 520	Samsung SGH-X640	Motorola V878	HTC Radar