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Phone	Samsung Galaxy S II / SGH-i777	Samsung SCH-A310	Samsung SPH-i550	HTC Touch Pro2 (GSM) / Tilt 2	LG Revolution
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Not yet released	Released	Released
Display Size	4.3" diag. 5 : 3	?	?	3.6" diag. 5 : 3	4.3" diag. 5 : 3
Display Resolution & Type	480 x 800 pixels (~217 ppi) AMOLED	128 x 128 pixels LCD (Grayscale)	320 x 320 pixels LCD (TFT/TFD)	480 x 800 pixels (~259 ppi) LCD (TFT/TFD)	480 x 800 pixels (~217 ppi) LCD (TFT/TFD)
Display Refresh	60 Hz	?	?	?	60 Hz
Battery	1,650 mAh	?	?	1,500 mAh	1,500 mAh
Processor	1.2 GHz Samsung Exynos dual-core	?	200 MHz Motorola MX-1	528 MHz Qualcomm MSM7200A	1 GHz Qualcomm Snapdragon S2 MSM8655
RAM	?	?	?	?	?
Storage	16 GB	? raw hardware	? raw hardware	? raw hardware	16 GB
Main Camera	8 megapixel	-	1 megapixel	3 megapixel	5 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	1080p HD	-	?	?	720p HD
Front Camera	2 megapixel	-	-	-	1 megapixel
Weight	4.3 oz (122g)	3.2 oz (91g)	?	6.61 oz (187g)	6.08 oz (172g)
Dimensions	4.96" x 2.6" x 0.35" (126 x 66 x 8.9 mm)	3.43" x 1.89" x 0.87" (87 x 48 x 22.1 mm)	3.46" x 2.34" x 1.1" (88 x 59 x 27.9 mm)	4.59" x 2.36" x 0.68" (117 x 60 x 17.3 mm)	5.03" x 2.64" x 0.52" (128 x 67 x 13.2 mm)
Form Factor	Slab	Clamshell	Clamshell	Slab	Slab
Platform / OS	Android	(proprietary)	Palm OS	Windows Mobile Professional	Android
Network Bands	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900 AMPS: 850	CDMA: 850, 1900 AMPS: 850	WCDMA: 1, 4 GSM: 850, 900, 1800, 1900 *	4G LTE: 13 CDMA: 850, 1900
Data Technology	HSPA+ 21	1xRTT	1xRTT	HSPA 7.2	LTE (Cat 3)
Features
GPS / Location	n/a	Yes	n/a	n/a	n/a
Accessibility
Adjustable Text Size	n/a	-	n/a	n/a	n/a
Hearing Aid Compatible	Yes M3 (mostly compatible)	-	-	-	Yes M4, T3 (mostly tele-coil compatible)
Multiple Languages	n/a	Yes	n/a	n/a	n/a
TTY/TDD (Digital)	Yes	-	Yes	Yes	Yes
Alerts
Extra Display	-	Yes	Yes	-	-
Connectivity
Bluetooth	Yes	-	-	Yes	Yes
Infrared (IR)	-	-	Yes	-	-
Mobile Hotspot	n/a	-	n/a	n/a	n/a
NFC	Yes	-	-	-	-
USB	Yes Micro-USB	Yes	-	Yes	Yes
Wi-Fi	Yes 4 (802.11 a,b,g,n)	-	-	Yes 802.11 b,g	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	n/a	-	n/a	n/a	n/a
Ringer ID	n/a	-	n/a	n/a	n/a
Voice Dialing	n/a	Yes	n/a	n/a	n/a
Customization
Changeable Body Plates	-	Yes	-	-	-
Custom Graphics	n/a	-	n/a	n/a	n/a
Custom Ringtones	n/a	-	n/a	n/a	n/a
Real-Music Ringers	n/a	-	n/a	n/a	n/a
Data & Network
Data Tethering	n/a	Yes	n/a	n/a	n/a
WAP / Web Browser	n/a	Yes	n/a	n/a	n/a
Input
Predictive Text Entry	n/a	Yes	n/a	n/a	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Stylus	-	-	-	Yes	-
Text Keyboard, Hardware	-	-	-	Yes	-
Touch Screen	Yes Capacitive	-	Yes	Yes	Yes Capacitive
Memory
Memory Card Slot	Yes	-	Yes	Yes	Yes
Messaging
Email Client	n/a	-	n/a	n/a	n/a
Instant Messaging	n/a	-	n/a	n/a	n/a
MMS	n/a	-	n/a	n/a	n/a
Text Messaging Templates	n/a	-	n/a	n/a	n/a
Music
Headphone Jack (3.5mm)	Yes	-	-	-	Yes
Music Player	n/a	-	n/a	n/a	n/a
Photo & Video
DLNA	Yes	-	-	-	Yes
TV Output	Yes	-	-	Yes	Yes
Video Calling	n/a	-	n/a	n/a	n/a
Productivity
Alarm	n/a	-	n/a	n/a	n/a
Calculator	n/a	-	n/a	n/a	n/a
Calendar	n/a	Yes	n/a	n/a	n/a
To-Do List	n/a	-	n/a	n/a	n/a
Voice Memo	n/a	Yes	n/a	n/a	n/a
Software
Games	n/a	Yes	n/a	n/a	n/a
Java (J2ME)	n/a	-	n/a	n/a	n/a
Voice
Headset Jack (2.5 mm)	n/a	Yes	n/a	n/a	n/a
Push-To-Talk	-	-	-	Yes *	-
Speaker Phone	Yes	-	-	Yes	Yes
	* Some versions only
	Samsung Galaxy S II / SGH-i777	Samsung SCH-A310	Samsung SPH-i550	HTC Touch Pro2 (GSM) / Tilt 2	LG Revolution
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung Galaxy S II / SGH-i777	Samsung SCH-A310	Samsung SPH-i550	HTC Touch Pro2 (GSM) / Tilt 2	LG Revolution