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Phone	Motorola V551 / V330 / V547 / V555 / V557	Samsung SCH-A310	Siemens SX66 / MDA III / PDA2K (HTC Blue Angel)	HTC Dash / S620 / S621 (Excalibur)	Motorola Q
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	?	?	?	?
Display Resolution & Type	176 x 220 pixels LCD (TFT/TFD)	128 x 128 pixels LCD (Grayscale)	240 x 320 pixels LCD (TFT/TFD)	320 x 240 pixels LCD (TFT/TFD)	320 x 240 pixels LCD (TFT/TFD)
Display Refresh	?	?	?	?	?
Battery	820 mAh	?	1,490 mAh	960 mAh	1,130 mAh
Processor	?	?	400 MHz Intel XScale	200 MHz OMAP 850	?
RAM	?	?	?	?	?
Storage	? raw hardware	? raw hardware	? raw hardware	? raw hardware	? raw hardware
Main Camera	Yes	-	Yes	1 megapixel	1 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	?	-	QCIF (176 x 144)	?	?
Front Camera	-	-	-	-	-
Weight	4.23 oz (120g)	3.2 oz (91g)	7.41 oz (210g)	4.23 oz (120g)	4.06 oz (115g)
Dimensions	3.5" x 1.93" x 0.97" (89 x 49 x 24.6 mm)	3.43" x 1.89" x 0.87" (87 x 48 x 22.1 mm)	4.92" x 2.83" x 0.75" (125 x 72 x 19.1 mm)	4.39" x 2.46" x 0.51" (112 x 62 x 13 mm)	4.57" x 2.52" x 0.47" (116 x 64 x 11.9 mm)
Form Factor	Clamshell	Clamshell	Slide	Slab	Slab
Platform / OS	(proprietary)	(proprietary)	Windows Mobile Professional	Windows Mobile Standard	Windows Mobile Standard
Network Bands	GSM: 850, 900, 1800, 1900 *	CDMA: 850, 1900 AMPS: 850	GSM: 850, 900, 1800, 1900	GSM: 850, 900, 1800, 1900	CDMA: 850, 1900
Data Technology	EDGE	1xRTT	GPRS	EDGE	EVDO r0
Features
GPS / Location	-	Yes	n/a	n/a	n/a
Accessibility
Adjustable Text Size	-	-	n/a	n/a	n/a
Hearing Aid Compatible	-	-	-	-	Yes M3 (mostly compatible)
Multiple Languages	Yes	Yes	n/a	n/a	n/a
TTY/TDD (Digital)	Yes	-	-	Yes	Yes
Alerts
Extra Display	Yes	Yes	-	-	-
Ringer Profiles	Yes	-	-	Yes	Yes
Connectivity
Bluetooth	Yes	-	Yes	Yes	Yes
Infrared (IR)	-	-	Yes	-	Yes
USB	Yes	Yes	Yes	Yes	Yes Mini-USB
Wi-Fi	-	-	Yes	Yes 802.11 b,g	-
Contacts
Picture ID	Yes	-	n/a	n/a	n/a
Ringer ID	Yes	-	n/a	n/a	n/a
Voice Dialing	Yes	Yes	n/a	n/a	n/a
Customization
Changeable Body Plates	-	Yes	-	-	-
Custom Graphics	Yes	-	n/a	n/a	n/a
Custom Ringtones	Yes	-	n/a	n/a	n/a
Real-Music Ringers	Yes	-	n/a	n/a	n/a
Data & Network
Data Tethering	Yes	Yes	n/a	n/a	n/a
External Antenna Jack	-	-	n/a	n/a	n/a
WAP / Web Browser	Yes	Yes	n/a	n/a	n/a
Input
Predictive Text Entry	Yes	Yes	n/a	n/a	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	-	Yes	Yes	Yes
Touch Screen	-	-	Yes	-	-
Memory
Memory Card Slot	-	-	Yes	Yes	Yes
Messaging
Email Client	Yes	-	n/a	n/a	n/a
EMS / Picture Messaging	Yes	-	n/a	n/a	n/a
Instant Messaging	Yes	-	n/a	n/a	n/a
MMS	Yes	-	n/a	n/a	n/a
Text Messaging Templates	Yes	-	n/a	n/a	n/a
Music
Music Player	-	-	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	Yes	n/a	n/a	n/a
To-Do List	-	-	n/a	n/a	n/a
Voice Memo	Yes	Yes	n/a	n/a	n/a
Software
Games	Yes	Yes	n/a	n/a	n/a
Java (J2ME)	Yes	-	n/a	n/a	n/a
Voice
Headset Jack (2.5 mm)	Yes	Yes	n/a	n/a	n/a
Speaker Phone	Yes	-	Yes	Yes	Yes
	* Some versions only
	Motorola V551 / V330 / V547 / V555 / V557	Samsung SCH-A310	Siemens SX66 / MDA III / PDA2K (HTC Blue Angel)	HTC Dash / S620 / S621 (Excalibur)	Motorola Q
	X >	< X >	< X >	< X >	< X

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


Phone	Motorola V551 / V330 / V547 / V555 / V557	Samsung SCH-A310	Siemens SX66 / MDA III / PDA2K (HTC Blue Angel)	HTC Dash / S620 / S621 (Excalibur)	Motorola Q