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Phone	Palm Treo 650 (CDMA)	Motorola V551 / V330 / V547 / V555 / V557	Samsung SPH-A660 / VI660	BlackBerry 7750	HTC Touch Pro2 (CDMA)
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	?	?	?	3.6" diag. 5 : 3
Display Resolution & Type	320 x 320 pixels LCD (TFT/TFD)	176 x 220 pixels LCD (TFT/TFD)	128 x 160 pixels LCD (Color)	240 x 240 pixels LCD (Color)	480 x 800 pixels (~259 ppi) LCD (TFT/TFD)
Display Refresh	?	?	?	?	?
Battery	?	820 mAh	?	?	1,500 mAh
Processor	312 MHz Intel XScale PXA270	?	?	?	528 MHz MSM7600
RAM	?	?	?	?	?
Storage	? raw hardware	? raw hardware	? raw hardware	? raw hardware	? raw hardware
Main Camera	Yes	Yes	-	-	3 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	QVGA (320 x 240)	?	-	-	?
Front Camera	-	-	-	-	-
Weight	6.3 oz (179g)	4.23 oz (120g)	3.54 oz (100g)	5.01 oz (142g)	6.35 oz (180g)
Dimensions	4.4" x 2.3" x 0.9" (112 x 58 x 22.9 mm)	3.5" x 1.93" x 0.97" (89 x 49 x 24.6 mm)	3.3" x 1.8" x 0.87" (84 x 46 x 22.1 mm)	4.76" x 3.03" x 0.71" (121 x 77 x 18 mm)	4.57" x 2.33" x 0.68" (116 x 59 x 17.3 mm)
Form Factor	Slab	Clamshell	Clamshell	Slab	Slab
Platform / OS	Palm OS	(proprietary)	(proprietary)	BlackBerry OS	Windows Mobile Professional
Network Bands	CDMA: 850, 1900	GSM: 850, 900, 1800, 1900 *	CDMA: 850, 1900 AMPS: 850	CDMA: 850, 1900	WCDMA: 1 CDMA: 850, 1900 GSM: 850, 900, 1800, 1900
Data Technology	1xRTT	EDGE	1xRTT	1xRTT	EVDO rA
Features
GPS / Location	n/a	-	Yes	n/a	n/a
Accessibility
Adjustable Text Size	n/a	-	-	n/a	n/a
Hearing Aid Compatible	-	-	-	-	Yes M4, T3 (mostly tele-coil compatible)
Multiple Languages	n/a	Yes	Yes	n/a	n/a
TTY/TDD (Digital)	-	Yes	Yes	Yes	Yes
Alerts
Extra Display	-	Yes	-	-	-
Ringer Profiles	-	Yes	-	Yes	-
Connectivity
Bluetooth	Yes	Yes	-	-	Yes
Infrared (IR)	Yes	-	-	-	-
USB	-	Yes	-	Yes	Yes
Wi-Fi	-	-	-	-	Yes
Contacts
Picture ID	n/a	Yes	Yes	n/a	n/a
Ringer ID	n/a	Yes	Yes	n/a	n/a
Voice Dialing	n/a	Yes	Yes	n/a	n/a
Customization
Custom Graphics	n/a	Yes	Yes	n/a	n/a
Custom Ringtones	n/a	Yes	Yes	n/a	n/a
Real-Music Ringers	n/a	Yes	-	n/a	n/a
Data & Network
Data Tethering	n/a	Yes	Yes	n/a	n/a
WAP / Web Browser	n/a	Yes	Yes	n/a	n/a
Input
Predictive Text Entry	n/a	Yes	Yes	n/a	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Stylus	-	-	-	-	Yes
Text Keyboard, Hardware	Yes	-	-	Yes	Yes
Touch Screen	Yes	-	-	-	Yes Resistive
Memory
Memory Card Slot	Yes	-	-	-	Yes
Messaging
Email Client	n/a	Yes	-	n/a	n/a
EMS / Picture Messaging	n/a	Yes	-	n/a	n/a
Instant Messaging	n/a	Yes	-	n/a	n/a
MMS	n/a	Yes	-	n/a	n/a
Text Messaging Templates	n/a	Yes	-	n/a	n/a
Music
Headphone Jack (3.5mm)	-	-	-	-	Yes
Music Player	n/a	-	-	n/a	n/a
Photo & Video
TV Output	-	-	-	-	Yes
Productivity
Alarm	n/a	Yes	Yes	n/a	n/a
Calculator	n/a	Yes	Yes	n/a	n/a
Calendar	n/a	Yes	Yes	n/a	n/a
To-Do List	n/a	-	Yes	n/a	n/a
Voice Memo	n/a	Yes	Yes	n/a	n/a
Software
Games	n/a	Yes	Yes	n/a	n/a
Java (J2ME)	n/a	Yes	Yes	n/a	n/a
Voice
Headset Jack (2.5 mm)	n/a	Yes	Yes	n/a	n/a
Speaker Phone	Yes	Yes	-	-	Yes
	Palm Treo 650 (CDMA)	Motorola V551 / V330 / V547 / V555 / V557	Samsung SPH-A660 / VI660	BlackBerry 7750	HTC Touch Pro2 (CDMA)
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NOTE: Differences are highlighted with bold / black text for visual clarity only.


Phone	Palm Treo 650 (CDMA)	Motorola V551 / V330 / V547 / V555 / V557	Samsung SPH-A660 / VI660	BlackBerry 7750	HTC Touch Pro2 (CDMA)