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Phone	Motorola V551 / V330 / V547 / V555 / V557	HP iPAQ hw6510 / hw6515	Motorola Charm	HTC Surround	Sony Ericsson Z550a
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	?	2.8" diag. 4 : 3	3.8" diag. 5 : 3	1.9" diag. 4 : 3
Display Resolution & Type	176 x 220 pixels LCD (TFT/TFD)	240 x 240 pixels LCD (TFT/TFD)	320 x 240 pixels (~143 ppi) LCD (TFT/TFD)	480 x 800 pixels (~246 ppi) LCD (TFT/TFD)	176 x 220 pixels (~148 ppi) LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	?	?
Battery	820 mAh	1,200 mAh	1,170 mAh	1,230 mAh	?
Processor	?	312 MHz Intel XScale PXA272	720 MHz TI OMAP3410	1 GHz Qualcomm Snapdragon S1 QSD8250	?
RAM	?	?	?	?	?
Storage	? raw hardware	? raw hardware	? raw hardware	? raw hardware	? raw hardware
Main Camera	Yes	1 megapixel	3 megapixel	5 megapixel	1 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	?	?	?	720p HD	?
Front Camera	-	-	-	-	-
Weight	4.23 oz (120g)	5.8 oz (164g)	3.88 oz (110g)	6.02 oz (171g)	3.26 oz (92g)
Dimensions	3.5" x 1.93" x 0.97" (89 x 49 x 24.6 mm)	4.65" x 2.8" x 0.71" (118 x 71 x 18 mm)	3.87" x 2.65" x 0.45" (98 x 67 x 11.4 mm)	4.72" x 2.44" x 0.54" (120 x 62 x 13.7 mm)	3.43" x 1.77" x 0.79" (87 x 45 x 20.1 mm)
Form Factor	Clamshell	Slab	Slab	Slab	Clamshell
Platform / OS	(proprietary)	Windows Mobile Professional	Android	Windows	(proprietary)
Network Bands	GSM: 850, 900, 1800, 1900 *	GSM: 850, 900, 1800, 1900	WCDMA: 4 GSM: 850, 900, 1800, 1900 *	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	GSM: 850, 900, 1800, 1900 *
Data Technology	EDGE	EDGE	HSDPA 3.6	HSPA 7.2	GPRS
Features
GPS / Location	-	n/a	n/a	n/a	-
Accessibility
Hearing Aid Compatible	-	-	-	Yes M3, T3 (mostly tele-coil compatible)	-
Multiple Languages	Yes	n/a	n/a	n/a	Yes
TTY/TDD (Digital)	Yes	Yes	Yes	Yes	Yes
Alerts
Extra Display	Yes	-	-	-	Yes
Ringer Profiles	Yes	Yes	-	-	Yes
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	Yes
Infrared (IR)	-	Yes	-	-	-
USB	Yes	Yes	Yes Micro-USB	Yes Micro-USB	Yes
Wi-Fi	-	-	Yes 4 (802.11 b,g,n)	Yes 4 (802.11 b,g,n)	-
Contacts
Picture ID	Yes	n/a	n/a	n/a	Yes
Ringer ID	Yes	n/a	n/a	n/a	Yes
Voice Dialing	Yes	n/a	n/a	n/a	Yes
Customization
Custom Graphics	Yes	n/a	n/a	n/a	Yes
Custom Ringtones	Yes	n/a	n/a	n/a	Yes
Real-Music Ringers	Yes	n/a	n/a	n/a	Yes
Data & Network
Data Tethering	Yes	n/a	n/a	n/a	Yes
WAP / Web Browser	Yes	n/a	n/a	n/a	Yes
Input
Predictive Text Entry	Yes	n/a	n/a	n/a	Yes
Side Keys	Yes	-	Yes	Yes	Yes
Text Keyboard, Hardware	-	Yes	Yes	-	-
Touch Screen	-	Yes	Yes Capacitive	Yes Capacitive	-
Memory
Memory Card Slot	-	Yes	Yes	-	Yes
Messaging
Email Client	Yes	n/a	n/a	n/a	Yes
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	Yes
Text Messaging Templates	Yes	n/a	n/a	n/a	Yes
Music
FM Radio	-	-	-	Yes	Yes
Headphone Jack (3.5mm)	-	-	Yes	Yes	-
Music Player	-	n/a	n/a	n/a	Yes
Stereo Speakers	-	-	-	Yes	-
Productivity
Alarm	Yes	n/a	n/a	n/a	Yes
Calculator	Yes	n/a	n/a	n/a	Yes
Calendar	Yes	n/a	n/a	n/a	Yes
To-Do List	-	n/a	n/a	n/a	Yes
Voice Memo	Yes	n/a	n/a	n/a	Yes
Software
Games	Yes	n/a	n/a	n/a	Yes
Java (J2ME)	Yes	n/a	n/a	n/a	Yes
Voice
Headset Jack (2.5 mm)	Yes	n/a	n/a	n/a	-
Push-To-Talk	-	-	-	-	Yes *
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Motorola V551 / V330 / V547 / V555 / V557	HP iPAQ hw6510 / hw6515	Motorola Charm	HTC Surround	Sony Ericsson Z550a
	X >	< X >	< X >	< X >	< X

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


Phone	Motorola V551 / V330 / V547 / V555 / V557	HP iPAQ hw6510 / hw6515	Motorola Charm	HTC Surround	Sony Ericsson Z550a