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Specifications
	X >	< X >	< X >	< X >	< X

Phone	Samsung SGH-X640	Huawei W1	Motorola Clutch + i475	Nokia N78	Nokia Lumia 521 / 520
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	4" diag. 5 : 3	2" diag. 4 : 3	2.4" diag. 4 : 3	4" diag. 5 : 3
Display Resolution & Type	128 x 160 pixels LCD (TFT/TFD)	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	220 x 176 pixels (~141 ppi) LCD (TFT/TFD)	240 x 320 pixels (~167 ppi) LCD (TFT/TFD)	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)
Display Refresh	?	?	?	?	?
Battery	800 mAh	1,950 mAh	1,130 mAh	1,200 mAh	1,430 mAh
Processor	?	1.2 GHz Qualcomm Snapdragon 400 MSM8230	?	369 MHz ARM 11	1 GHz Qualcomm Snapdragon S4 MSM8270
RAM	?	512 MB	?	?	512 MB
Storage	? raw hardware	4 GB	? raw hardware	? raw hardware	8 GB
Main Camera	Yes	5 megapixel	Yes	3 megapixel	5 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	720p HD	-	VGA (640 x 480)	720p HD
Front Camera	-	Yes	-	-	-
Weight	3 oz (85g)	4.41 oz (125g)	3.53 oz (100g)	3.59 oz (102g)	4.39 oz (124g)
Dimensions	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	4.84" x 2.5" x 0.41" (123 x 64 x 10.4 mm)	4.23" x 2.31" x 0.64" (107 x 59 x 16.1 mm)	4.45" x 1.93" x 0.59" (113 x 49 x 15.1 mm)	4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm)
Form Factor	Clamshell	Slab	Slab	Slab	Slab
Platform / OS	(proprietary)	Windows	(proprietary)	S60 (Symbian)	Windows
Network Bands	GSM: 900, 1800, 1900	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900	iDEN: 800	WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 *	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 *
Data Technology	GPRS	HSPA+ 21	-	HSDPA 3.6	HSPA+ 21
Features
GPS / Location	-	n/a	Yes	n/a	n/a
Accessibility
Adjustable Text Size	-	n/a	Yes	n/a	n/a
Hearing Aid Compatible	-	Yes	Yes	-	Yes
Multiple Languages	Yes	n/a	Yes	n/a	n/a
TTY/TDD (Digital)	-	-	Yes	-	Yes
Alerts
Ringer Profiles	-	-	Yes	Yes	-
Connectivity
Bluetooth	-	Yes Classic Audio	Yes Classic Audio	Yes Classic Audio	Yes
Mobile Hotspot	-	n/a	-	n/a	n/a
USB	-	Yes Micro-USB	Yes Micro-USB	Yes Micro-USB	Yes
Wi-Fi	-	Yes 4 (802.11 b,g,n)	-	Yes 802.11 b,g	Yes
Contacts
Picture ID	Yes	n/a	-	n/a	n/a
Ringer ID	Yes	n/a	-	n/a	n/a
Voice Dialing	-	n/a	-	n/a	n/a
Customization
Custom Graphics	Yes	n/a	Yes	n/a	n/a
Custom Ringtones	Yes	n/a	Yes	n/a	n/a
Real-Music Ringers	-	n/a	Yes	n/a	n/a
Data & Network
Data Tethering	-	n/a	-	n/a	n/a
WAP / Web Browser	Yes	n/a	Yes	n/a	n/a
Input
Predictive Text Entry	Yes	n/a	Yes	n/a	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	-	Yes	-	-
Touch Screen	-	Yes	-	-	Yes
Memory
Memory Card Slot	-	Yes	-	Yes	Yes
Messaging
Email Client	-	n/a	Yes	n/a	n/a
EMS / Picture Messaging	Yes	n/a	-	n/a	n/a
Instant Messaging	-	n/a	Yes	n/a	n/a
MMS	Yes	n/a	Yes	n/a	n/a
Text Messaging Templates	Yes	n/a	Yes	n/a	n/a
Music
FM Radio	-	-	-	Yes	-
FM Transmitter	-	n/a	-	n/a	n/a
Headphone Jack (3.5mm)	-	Yes	-	Yes	Yes
Music Player	-	n/a	-	n/a	n/a
Stereo Speakers	-	-	-	Yes	-
Photo & Video
TV Output	-	-	-	Yes	-
Video Calling	-	n/a	-	n/a	n/a
Productivity
Alarm	Yes	n/a	-	n/a	n/a
Calculator	Yes	n/a	-	n/a	n/a
Calendar	Yes	n/a	Yes	n/a	n/a
To-Do List	Yes	n/a	-	n/a	n/a
Voice Memo	Yes	n/a	Yes	n/a	n/a
Software
Games	Yes	n/a	Yes	n/a	n/a
Java (J2ME)	Yes	n/a	Yes	n/a	n/a
Voice
Headset Jack (2.5 mm)	Yes	n/a	Yes	n/a	n/a
Push-To-Talk	-	-	Yes	Yes *	-
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Samsung SGH-X640	Huawei W1	Motorola Clutch + i475	Nokia N78	Nokia Lumia 521 / 520
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung SGH-X640	Huawei W1	Motorola Clutch + i475	Nokia N78	Nokia Lumia 521 / 520