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Sony Xperia PRO-I Siemens SX66 / MDA III / PDA2K (HTC Blue Angel) Samsung SPH-A660 / VI660

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Specifications
	X >	< X >	< X >	< X

Phone	Motorola Droid	Palm Treo 650 (CDMA)	Samsung Knack U310	Nokia N81
Current U.S. Carriers	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released
Display Size	3.7" diag. 16 : 9	?	2.2" diag. 4 : 3	2.4" diag. 4 : 3
Display Resolution & Type	480 x 854 pixels (~268 ppi) LCD (TFT/TFD)	320 x 320 pixels LCD (TFT/TFD)	176 x 220 pixels (~128 ppi) LCD (TFT/TFD)	240 x 320 pixels (~167 ppi) LCD (TFT/TFD)
Display Refresh	60 Hz	?	?	?
Battery	1,400 mAh	?	1,000 mAh	1,050 mAh
Processor	550 MHz TI OMAP 3430 (ARM Cortex A8)	312 MHz Intel XScale PXA270	?	369 MHz ARM 11
RAM	?	?	?	?
Storage	? raw hardware	? raw hardware	? raw hardware	8 GB *
Main Camera	5 megapixel	Yes	-	2 megapixel
Wide Camera	-	-	-	-
Tele Camera	-	-	-	-
Video Capture	WVGA / 480p	QVGA (320 x 240)	-	VGA (640 x 480)
Front Camera	-	-	-	-
Weight	5.99 oz (170g)	6.3 oz (179g)	3.63 oz (103g)	4.94 oz (140g)
Dimensions	4.55" x 2.35" x 0.55" (116 x 60 x 14 mm)	4.4" x 2.3" x 0.9" (112 x 58 x 22.9 mm)	3.78" x 2.01" x 0.74" (96 x 51 x 18.8 mm)	4.02" x 1.97" x 0.7" (102 x 50 x 17.8 mm)
Form Factor	Slab	Slab	Clamshell	Slide
Platform / OS	Android	Palm OS	(proprietary)	S60 (Symbian)
Network Bands	CDMA: 850, 1900	CDMA: 850, 1900	CDMA: 850, 1900	WCDMA: 1 GSM: 850, 900, 1800, 1900
Data Technology	EVDO rA	1xRTT	-	EDGE
Features
GPS / Location	n/a	n/a	Yes	n/a
Accessibility
Adjustable Text Size	n/a	n/a	Yes	n/a
Hearing Aid Compatible	Yes M3, T3 (mostly tele-coil compatible)	-	Yes M4, T4 (very tele-coil compatible)	-
Multiple Languages	n/a	n/a	Yes	n/a
TTY/TDD (Digital)	Yes	-	Yes	-
Alerts
Extra Display	-	-	Yes	-
Ringer Profiles	-	-	-	Yes
Connectivity
Bluetooth	Yes	Yes	-	Yes
Infrared (IR)	-	Yes	-	-
USB	Yes Micro-USB	-	-	Yes Micro-USB
Wi-Fi	Yes 802.11 b,g	-	-	Yes 802.11 b,g
Contacts
Picture ID	n/a	n/a	-	n/a
Ringer ID	n/a	n/a	-	n/a
Voice Dialing	n/a	n/a	Yes	n/a
Customization
Custom Graphics	n/a	n/a	-	n/a
Custom Ringtones	n/a	n/a	-	n/a
Real-Music Ringers	n/a	n/a	-	n/a
Data & Network
Data Tethering	n/a	n/a	-	n/a
External Antenna Jack	n/a	n/a	-	n/a
WAP / Web Browser	n/a	n/a	-	n/a
Input
Predictive Text Entry	n/a	n/a	Yes	n/a
Side Keys	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	Yes	Yes	-	-
Touch Screen	Yes Capacitive	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	-	n/a
Music
FM Radio	-	-	-	Yes
Headphone Jack (3.5mm)	Yes	-	-	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	n/a	Yes	n/a
Calculator	n/a	n/a	Yes	n/a
Calendar	n/a	n/a	Yes	n/a
To-Do List	n/a	n/a	-	n/a
Voice Memo	n/a	n/a	-	n/a
Software
Games	n/a	n/a	-	n/a
Java (J2ME)	n/a	n/a	-	n/a
Voice
Headset Jack (2.5 mm)	n/a	n/a	Yes	n/a
Push-To-Talk	-	-	-	Yes *
Speaker Phone	Yes	Yes	Yes	Yes
	* Some versions only
	Motorola Droid	Palm Treo 650 (CDMA)	Samsung Knack U310	Nokia N81
	X >	< X >	< X >	< X

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


Phone	Motorola Droid	Palm Treo 650 (CDMA)	Samsung Knack U310	Nokia N81