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Phone	Samsung SPH-A660 / VI660	Samsung SCH-A310	HTC EVO 4G	Samsung Galaxy S II / SGH-i777	Palm Treo 600 (CDMA)
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	?	4.3" diag. 5 : 3	4.3" diag. 5 : 3	?
Display Resolution & Type	128 x 160 pixels LCD (Color)	128 x 128 pixels LCD (Grayscale)	480 x 800 pixels (~217 ppi) LCD (TFT/TFD)	480 x 800 pixels (~217 ppi) AMOLED	160 x 160 pixels LCD (Color)
Display Refresh	?	?	60 Hz	60 Hz	?
Battery	?	?	1,500 mAh	1,650 mAh	?
Processor	?	?	1 GHz Qualcomm Snapdragon S1 QSD8650	1.2 GHz Samsung Exynos dual-core	?
RAM	?	?	?	?	?
Storage	? raw hardware	? raw hardware	? raw hardware	16 GB	? raw hardware
Main Camera	-	-	8 megapixel	8 megapixel	Yes
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	-	720p HD	1080p HD	-
Front Camera	-	-	Yes	2 megapixel	-
Weight	3.54 oz (100g)	3.2 oz (91g)	6 oz (170g)	4.3 oz (122g)	6.2 oz (176g)
Dimensions	3.3" x 1.8" x 0.87" (84 x 46 x 22.1 mm)	3.43" x 1.89" x 0.87" (87 x 48 x 22.1 mm)	4.8" x 2.6" x 0.5" (122 x 66 x 12.7 mm)	4.96" x 2.6" x 0.35" (126 x 66 x 8.9 mm)	4.41" x 2.36" x 0.87" (112 x 60 x 22.1 mm)
Form Factor	Clamshell	Clamshell	Slab	Slab	Slab
Platform / OS	(proprietary)	(proprietary)	Android	Android	Palm OS
Network Bands	CDMA: 850, 1900 AMPS: 850	CDMA: 850, 1900 AMPS: 850	4G WiMAX: 41 CDMA: 850, 1900	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900
Data Technology	1xRTT	1xRTT	WiMAX	HSPA+ 21	1xRTT
Features
GPS / Location	Yes	Yes	n/a	n/a	n/a
Accessibility
Hearing Aid Compatible	-	-	Yes	Yes M3 (mostly compatible)	-
Multiple Languages	Yes	Yes	n/a	n/a	n/a
TTY/TDD (Digital)	Yes	-	Yes	Yes	Yes
Alerts
Extra Display	-	Yes	-	-	-
Connectivity
Bluetooth	-	-	Yes	Yes	-
Infrared (IR)	-	-	-	-	Yes
Mobile Hotspot	-	-	n/a	n/a	n/a
NFC	-	-	-	Yes	-
USB	-	Yes	Yes	Yes Micro-USB	Yes
Wi-Fi	-	-	Yes 802.11 b,g	Yes 4 (802.11 a,b,g,n)	-
Contacts
Picture ID	Yes	-	n/a	n/a	n/a
Ringer ID	Yes	-	n/a	n/a	n/a
Voice Dialing	Yes	Yes	n/a	n/a	n/a
Customization
Changeable Body Plates	-	Yes	-	-	-
Custom Graphics	Yes	-	n/a	n/a	n/a
Custom Ringtones	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
Text Keyboard, Hardware	-	-	-	-	Yes
Touch Screen	-	-	Yes Capacitive	Yes Capacitive	Yes
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	-	-	n/a	n/a	n/a
Music
FM Radio	-	-	Yes	-	-
Headphone Jack (3.5mm)	-	-	Yes	Yes	-
Music Player	-	-	n/a	n/a	n/a
Photo & Video
DLNA	-	-	-	Yes	-
TV Output	-	-	Yes	Yes	-
Productivity
Alarm	Yes	-	n/a	n/a	n/a
Calculator	Yes	-	n/a	n/a	n/a
Calendar	Yes	Yes	n/a	n/a	n/a
To-Do List	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	-	n/a	n/a	n/a
Voice
Headset Jack (2.5 mm)	Yes	Yes	n/a	n/a	n/a
Speaker Phone	-	-	Yes	Yes	Yes
	Samsung SPH-A660 / VI660	Samsung SCH-A310	HTC EVO 4G	Samsung Galaxy S II / SGH-i777	Palm Treo 600 (CDMA)
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NOTE: Differences are highlighted with bold / black text for visual clarity only.


Phone	Samsung SPH-A660 / VI660	Samsung SCH-A310	HTC EVO 4G	Samsung Galaxy S II / SGH-i777	Palm Treo 600 (CDMA)