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Phone	Sony Ericsson Z550a	Samsung SCH-A990	BlackBerry Torch 9810	Motorola i412	Nokia N81
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	1.9" diag. 4 : 3	?	3.2" diag. 4 : 3	1.8" diag. 4 : 3	2.4" diag. 4 : 3
Display Resolution & Type	176 x 220 pixels (~148 ppi) LCD (TFT/TFD)	240 x 320 pixels LCD (TFT/TFD)	480 x 640 pixels (~250 ppi) LCD (TFT/TFD)	128 x 160 pixels (~114 ppi) LCD (TFT/TFD)	240 x 320 pixels (~167 ppi) LCD (TFT/TFD)
Display Refresh	?	?	?	?	?
Battery	?	1,000 mAh	1,270 mAh	1,130 mAh	1,050 mAh
Processor	?	?	1.2 GHz Qualcomm Snapdragon S2 MSM8655	?	369 MHz ARM 11
RAM	?	?	768 MB	?	?
Storage	? raw hardware	? raw hardware	8 GB	? raw hardware	8 GB *
Main Camera	1 megapixel	3 megapixel	5 megapixel	Yes	2 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	?	?	720p HD	-	VGA (640 x 480)
Front Camera	-	-	-	-	-
Weight	3.26 oz (92g)	4.4 oz (125g)	5.68 oz (161g)	3.72 oz (105g)	4.94 oz (140g)
Dimensions	3.43" x 1.77" x 0.79" (87 x 45 x 20.1 mm)	3.8" x 1.88" x 0.82" (97 x 48 x 20.8 mm)	4.37" x 2.44" x 0.57" (111 x 62 x 14.5 mm)	3.8" x 1.93" x 0.79" (97 x 49 x 20 mm)	4.02" x 1.97" x 0.7" (102 x 50 x 17.8 mm)
Form Factor	Clamshell	Clamshell	Slide	Clamshell	Slide
Platform / OS	(proprietary)	(proprietary)	BlackBerry OS	(proprietary)	S60 (Symbian)
Network Bands	GSM: 850, 900, 1800, 1900 *	CDMA: 850, 1900	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 *	iDEN: 800	WCDMA: 1 GSM: 850, 900, 1800, 1900
Data Technology	GPRS	EVDO r0	HSPA 14.4	-	EDGE
Features
Flashlight	-	Yes	-	-	-
GPS / Location	-	Yes	n/a	Yes	n/a
Accessibility
Adjustable Text Size	-	-	n/a	-	n/a
Hearing Aid Compatible	-	Yes M3 (mostly compatible)	Yes M3, T3 (mostly tele-coil compatible)	Yes M4, T4 (very tele-coil compatible)	-
Multiple Languages	Yes	Yes	n/a	Yes	n/a
TTY/TDD (Digital)	Yes	Yes	-	Yes	-
Alerts
Extra Display	Yes	Yes	-	Yes	-
Ringer Profiles	Yes	-	Yes	-	Yes
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	Yes
USB	Yes	Yes	Yes	Yes Micro-USB	Yes Micro-USB
Wi-Fi	-	-	Yes 4 (802.11 b,g,n)	-	Yes 802.11 b,g
Contacts
Picture ID	Yes	Yes	n/a	-	n/a
Ringer ID	Yes	Yes	n/a	Yes	n/a
Voice Dialing	Yes	Yes	n/a	Yes	n/a
Customization
Custom Graphics	Yes	Yes	n/a	Yes	n/a
Custom Ringtones	Yes	Yes	n/a	Yes	n/a
Real-Music Ringers	Yes	Yes	n/a	Yes	n/a
Data & Network
Data Tethering	Yes	Yes	n/a	-	n/a
WAP / Web Browser	Yes	Yes	n/a	Yes	n/a
Input
Predictive Text Entry	Yes	Yes	n/a	-	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	-	Yes	-	-
Touch Screen	-	-	Yes Capacitive	-	-
Memory
Memory Card Slot	Yes	Yes	Yes	-	Yes *
Messaging
Email Client	Yes	-	n/a	Yes	n/a
EMS / Picture Messaging	-	Yes	n/a	-	n/a
Instant Messaging	-	-	n/a	Yes	n/a
MMS	Yes	Yes	n/a	Yes	n/a
Text Messaging Templates	Yes	Yes	n/a	Yes	n/a
Music
FM Radio	Yes	-	-	-	Yes
Headphone Jack (3.5mm)	-	-	Yes	-	Yes
Music Player	Yes	Yes	n/a	-	n/a
Stereo Speakers	-	Yes	-	-	Yes
Photo & Video
TV Output	-	Yes	-	-	-
Video Calling	-	-	n/a	-	n/a
Productivity
Alarm	Yes	Yes	n/a	-	n/a
Calculator	Yes	Yes	n/a	-	n/a
Calendar	Yes	Yes	n/a	Yes	n/a
To-Do List	Yes	-	n/a	Yes	n/a
Voice Memo	Yes	Yes	n/a	Yes	n/a
Software
BREW	-	Yes	n/a	-	n/a
Games	Yes	Yes	n/a	Yes	n/a
Java (J2ME)	Yes	-	n/a	Yes	n/a
Voice
Headset Jack (2.5 mm)	-	-	n/a	Yes	n/a
Push-To-Talk	Yes *	-	-	Yes	Yes *
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Sony Ericsson Z550a	Samsung SCH-A990	BlackBerry Torch 9810	Motorola i412	Nokia N81
	X >	< X >	< X >	< X >	< X

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


Phone	Sony Ericsson Z550a	Samsung SCH-A990	BlackBerry Torch 9810	Motorola i412	Nokia N81