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Phone	Samsung SPH-A660 / VI660	Samsung MM-A900 / SPH-A900 / Ace	LG Revolution	HTC Touch Pro2 (GSM) / Tilt 2	ZTE Blade Vantage
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	?	4.3" diag. 5 : 3	3.6" diag. 5 : 3	5" diag. 16 : 9
Display Resolution & Type	128 x 160 pixels LCD (Color)	240 x 320 pixels LCD (TFT/TFD)	480 x 800 pixels (~217 ppi) LCD (TFT/TFD)	480 x 800 pixels (~259 ppi) LCD (TFT/TFD)	480 x 854 pixels (~196 ppi) LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	?	60 Hz
Battery	?	?	1,500 mAh	1,500 mAh	2,500 mAh
Processor	?	?	1 GHz Qualcomm Snapdragon S2 MSM8655	528 MHz Qualcomm MSM7200A	1.1 GHz Qualcomm Snapdragon 210 (MSM8909)
RAM	?	?	?	?	2 GB
Storage	? raw hardware	? raw hardware	16 GB	? raw hardware	16 GB
Main Camera	-	1 megapixel	5 megapixel	3 megapixel	8 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	?	720p HD	?	720p HD
Front Camera	-	-	1 megapixel	-	2 megapixel
Weight	3.54 oz (100g)	3.9 oz (111g)	6.08 oz (172g)	6.61 oz (187g)	5.29 oz (150g)
Dimensions	3.3" x 1.8" x 0.87" (84 x 46 x 22.1 mm)	3.86" x 2.01" x 0.57" (98 x 51 x 14.5 mm)	5.03" x 2.64" x 0.52" (128 x 67 x 13.2 mm)	4.59" x 2.36" x 0.68" (117 x 60 x 17.3 mm)	5.73" x 2.85" x 0.36" (146 x 72 x 9.2 mm)
Form Factor	Clamshell	Clamshell	Slab	Slab	Slab
Platform / OS	(proprietary)	(proprietary)	Android	Windows Mobile Professional	Android
Network Bands	CDMA: 850, 1900 AMPS: 850	CDMA: 850, 1900	4G LTE: 13 CDMA: 850, 1900	WCDMA: 1, 4 GSM: 850, 900, 1800, 1900 *	4G LTE: 2, 4, 5, 13
Data Technology	1xRTT	EVDO r0	LTE (Cat 3)	HSPA 7.2	LTE (Cat 4)
Features
Flashlight	-	-	-	-	Yes
GPS / Location	Yes	Yes	n/a	n/a	n/a
Accessibility
Adjustable Text Size	-	-	n/a	n/a	n/a
Hearing Aid Compatible	-	-	Yes M4, T3 (mostly tele-coil compatible)	-	Yes M4, T4 (very tele-coil compatible)
Multiple Languages	Yes	Yes	n/a	n/a	n/a
TTY/TDD (Digital)	Yes	Yes	Yes	Yes	Yes
Alerts
Extra Display	-	Yes	-	-	-
Connectivity
Bluetooth	-	Yes	Yes	Yes	Yes
Mobile Hotspot	-	-	n/a	n/a	n/a
USB	-	Yes	Yes	Yes	Yes Micro-USB
Wi-Fi	-	-	Yes 4 (802.11 b,g,n)	Yes 802.11 b,g	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	Yes	Yes	n/a	n/a	n/a
Ringer ID	Yes	Yes	n/a	n/a	n/a
Voice Dialing	Yes	Yes	n/a	n/a	n/a
Customization
Custom Graphics	Yes	Yes	n/a	n/a	n/a
Custom Ringtones	Yes	Yes	n/a	n/a	n/a
Real-Music Ringers	-	-	n/a	n/a	n/a
Data & Network
Data Tethering	Yes	Yes	n/a	n/a	n/a
WAP / Web Browser	Yes	Yes	n/a	n/a	n/a
Input
Predictive Text Entry	Yes	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 Capacitive
Memory
Memory Card Slot	-	-	Yes	Yes	Yes
Messaging
Email Client	-	-	n/a	n/a	n/a
Instant Messaging	-	-	n/a	n/a	n/a
MMS	-	-	n/a	n/a	n/a
Text Messaging Templates	-	Yes	n/a	n/a	n/a
Music
Headphone Jack (3.5mm)	-	-	Yes	-	Yes
Music Player	-	Yes	n/a	n/a	n/a
Photo & Video
DLNA	-	-	Yes	-	-
TV Output	-	-	Yes	Yes	-
Video Calling	-	-	n/a	n/a	n/a
Productivity
Alarm	Yes	Yes	n/a	n/a	n/a
Calculator	Yes	Yes	n/a	n/a	n/a
Calendar	Yes	Yes	n/a	n/a	n/a
To-Do List	Yes	Yes	n/a	n/a	n/a
Voice Memo	Yes	Yes	n/a	n/a	n/a
Software
Games	Yes	Yes	n/a	n/a	n/a
Java (J2ME)	Yes	Yes	n/a	n/a	n/a
Voice
HD Voice	-	-	-	-	Yes
Headset Jack (2.5 mm)	Yes	Yes	n/a	n/a	n/a
Push-To-Talk	-	-	-	Yes *	-
Speaker Phone	-	Yes	Yes	Yes	Yes
	* Some versions only
	Samsung SPH-A660 / VI660	Samsung MM-A900 / SPH-A900 / Ace	LG Revolution	HTC Touch Pro2 (GSM) / Tilt 2	ZTE Blade Vantage
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung SPH-A660 / VI660	Samsung MM-A900 / SPH-A900 / Ace	LG Revolution	HTC Touch Pro2 (GSM) / Tilt 2	ZTE Blade Vantage