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Phone	HTC Windows Phone 8S	Samsung SPH-A500	Nokia N81	Samsung Byline R310	Apple iPhone 3GS
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	4" diag. 5 : 3	?	2.4" diag. 4 : 3	1.8" diag. 4 : 3	3.5" diag. 5 : 3
Display Resolution & Type	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (TFT/TFD)	240 x 320 pixels (~167 ppi) LCD (TFT/TFD)	128 x 160 pixels (~116 ppi) LCD (STN)	320 x 480 pixels (~165 ppi) LCD (TFT/TFD)
Display Refresh	?	?	?	?	60 Hz
Battery	1,700 mAh	?	1,050 mAh	800 mAh	?
Processor	1 GHz Qualcomm Snapdragon S4	?	369 MHz ARM 11	?	?
RAM	512 MB	?	?	?	?
Storage	4 GB	? raw hardware	8 GB *	? raw hardware	32 GB *
Main Camera	5 megapixel	-	2 megapixel	-	3 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	720p HD	-	VGA (640 x 480)	-	VGA (640 x 480)
Front Camera	-	-	-	-	-
Weight	3.99 oz (113g)	3.6 oz (102g)	4.94 oz (140g)	3.25 oz (92g)	4.76 oz (135g)
Dimensions	4.74" x 2.48" x 0.4" (121 x 63 x 10.3 mm)	3.46" x 1.96" x 0.92" (88 x 50 x 23.4 mm)	4.02" x 1.97" x 0.7" (102 x 50 x 17.8 mm)	3.5" x 1.7" x 0.77" (89 x 43 x 19.6 mm)	4.55" x 2.44" x 0.48" (116 x 62 x 12.3 mm)
Form Factor	Slab	Clamshell	Slide	Clamshell	Slab
Platform / OS	Windows	(proprietary)	S60 (Symbian)	(proprietary)	iOS
Network Bands	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900 AMPS: 850	WCDMA: 1 GSM: 850, 900, 1800, 1900	CDMA: 850, 1700, 1900	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900
Data Technology	HSPA+ 21	1xRTT	EDGE	1xRTT	HSPA 7.2
Features
Flashlight	Yes	-	-	-	-
GPS / Location	n/a	Yes	n/a	Yes	n/a
Accessibility
Hearing Aid Compatible	Yes M3, T3 (mostly tele-coil compatible)	-	-	Yes M4 (very compatible)	-
Multiple Languages	n/a	Yes	n/a	Yes	n/a
TTY/TDD (Digital)	Yes	-	-	Yes	Yes
Alerts
Extra Display	-	Yes	-	Yes	-
Ringer Profiles	-	-	Yes	-	-
Connectivity
Bluetooth	Yes	-	Yes	Yes	Yes
USB	Yes	Yes	Yes Micro-USB	-	Yes
Wi-Fi	Yes 4 (802.11 b,g,n)	-	Yes 802.11 b,g	-	Yes 802.11 b,g
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	-	n/a	-	n/a
Data & Network
Data Tethering	n/a	Yes	n/a	-	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
Memory
Memory Card Slot	Yes	-	Yes *	-	-
Messaging
Email Client	n/a	-	n/a	-	n/a
Instant Messaging	n/a	-	n/a	-	n/a
MMS	n/a	-	n/a	Yes	n/a
Text Messaging Templates	n/a	-	n/a	Yes	n/a
Music
FM Radio	-	-	Yes	-	-
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	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	Yes	n/a	-	n/a
Voice Memo	n/a	Yes	n/a	-	n/a
Software
BREW	n/a	-	n/a	Yes	n/a
Games	n/a	Yes	n/a	Yes	n/a
Java (J2ME)	n/a	Yes	n/a	-	n/a
Voice
Headset Jack (2.5 mm)	n/a	Yes	n/a	-	n/a
Push-To-Talk	-	-	Yes *	Yes	-
Speaker Phone	Yes	-	Yes	Yes	Yes
	* Some versions only
	HTC Windows Phone 8S	Samsung SPH-A500	Nokia N81	Samsung Byline R310	Apple iPhone 3GS
	X >	< X >	< X >	< X >	< X

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


Phone	HTC Windows Phone 8S	Samsung SPH-A500	Nokia N81	Samsung Byline R310	Apple iPhone 3GS