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Phone	Nokia N81	Sanyo SCP-4900	Siemens SX66 / MDA III / PDA2K (HTC Blue Angel)	Siemens C56	Nokia N-Gage QD
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	2.4" diag. 4 : 3	?	?	?	?
Display Resolution & Type	240 x 320 pixels (~167 ppi) LCD (TFT/TFD)	120 x 128 pixels LCD (Color)	240 x 320 pixels LCD (TFT/TFD)	101 x 64 pixels	176 x 208 pixels LCD (Color)
Display Refresh	?	?	?	?	?
Battery	1,050 mAh	?	1,490 mAh	700 mAh	1,070 mAh
Processor	369 MHz ARM 11	?	400 MHz Intel XScale	?	?
RAM	?	?	?	?	?
Storage	8 GB *	? raw hardware	? raw hardware	? raw hardware	? raw hardware
Main Camera	2 megapixel	-	Yes	-	-
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	VGA (640 x 480)	-	QCIF (176 x 144)	-	-
Front Camera	-	-	-	-	-
Weight	4.94 oz (140g)	4.6 oz (130g)	7.41 oz (210g)	3 oz (85g)	5.04 oz (143g)
Dimensions	4.02" x 1.97" x 0.7" (102 x 50 x 17.8 mm)	4.88" x 1.89" x 0.98" (124 x 48 x 24.9 mm)	4.92" x 2.83" x 0.75" (125 x 72 x 19.1 mm)	3.98" x 1.73" x 0.83" (101 x 44 x 21.1 mm)	4.65" x 2.68" x 0.87" (118 x 68 x 22.1 mm)
Form Factor	Slide	Slab	Slide	Slab	Slab
Platform / OS	S60 (Symbian)	(proprietary)	Windows Mobile Professional	(proprietary)	S60 (Symbian)
Network Bands	WCDMA: 1 GSM: 850, 900, 1800, 1900	CDMA: 1900 AMPS: 850	GSM: 850, 900, 1800, 1900	GSM: 850, 1900	GSM: 850, 1900 *
Data Technology	EDGE	1xRTT	GPRS	GPRS	GPRS
Features
GPS / Location	n/a	Yes	n/a	Yes	n/a
Accessibility
Multiple Languages	n/a	Yes	n/a	Yes	n/a
TTY/TDD (Digital)	-	Yes	-	Yes	-
Alerts
Ringer Profiles	Yes	-	-	Yes	Yes
Connectivity
Bluetooth	Yes	-	Yes	-	Yes
Infrared (IR)	-	-	Yes	-	-
USB	Yes Micro-USB	Yes	Yes	Yes	-
Wi-Fi	Yes 802.11 b,g	-	Yes	-	-
Contacts
Picture ID	n/a	Yes	n/a	-	n/a
Ringer ID	n/a	Yes	n/a	Yes	n/a
Voice Dialing	n/a	Yes	n/a	Yes	n/a
Customization
Changeable Body Plates	-	-	-	Yes	-
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	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	-	-
Text Keyboard, Hardware	-	-	Yes	-	-
Touch Screen	-	-	Yes	-	-
Memory
Memory Card Slot	Yes *	-	Yes	-	Yes
Messaging
Email Client	n/a	-	n/a	-	n/a
EMS / Picture Messaging	n/a	-	n/a	Yes	n/a
Instant Messaging	n/a	-	n/a	-	n/a
MMS	n/a	-	n/a	-	n/a
Text Messaging Templates	n/a	-	n/a	Yes	n/a
Music
FM Radio	Yes	-	-	-	-
Headphone Jack (3.5mm)	Yes	-	-	-	-
Music Player	n/a	-	n/a	-	n/a
Stereo Speakers	Yes	-	-	-	-
Photo & Video
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
Games	n/a	Yes	n/a	Yes	n/a
Java (J2ME)	n/a	Yes	n/a	Yes	n/a
Voice
Call Screening	-	Yes	-	-	-
Headset Jack (2.5 mm)	n/a	Yes	n/a	-	n/a
Push-To-Talk	Yes *	-	-	-	-
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Nokia N81	Sanyo SCP-4900	Siemens SX66 / MDA III / PDA2K (HTC Blue Angel)	Siemens C56	Nokia N-Gage QD
	X >	< X >	< X >	< X >	< X

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


Phone	Nokia N81	Sanyo SCP-4900	Siemens SX66 / MDA III / PDA2K (HTC Blue Angel)	Siemens C56	Nokia N-Gage QD