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Phone	Samsung SPH-A660 / VI660	HP iPAQ Glisten	Palm Treo 600 (CDMA)	Samsung SCH-A310	HTC EVO 4G
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	2.5" diag. 4 : 3	?	?	4.3" diag. 5 : 3
Display Resolution & Type	128 x 160 pixels LCD (Color)	320 x 240 pixels (~160 ppi) AMOLED	160 x 160 pixels LCD (Color)	128 x 128 pixels LCD (Grayscale)	480 x 800 pixels (~217 ppi) LCD (TFT/TFD)
Display Refresh	?	?	?	?	60 Hz
Battery	?	1,590 mAh	?	?	1,500 mAh
Processor	?	528 MHz Qualcomm MSM7200a (ARM11)	?	?	1 GHz Qualcomm Snapdragon S1 QSD8650
RAM	?	?	?	?	?
Storage	? raw hardware	? raw hardware	? raw hardware	? raw hardware	? raw hardware
Main Camera	-	3 megapixel	Yes	-	8 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	QVGA (320 x 240)	-	-	720p HD
Front Camera	-	-	-	-	Yes
Weight	3.54 oz (100g)	5.29 oz (150g)	6.2 oz (176g)	3.2 oz (91g)	6 oz (170g)
Dimensions	3.3" x 1.8" x 0.87" (84 x 46 x 22.1 mm)	4.44" x 2.47" x 0.53" (113 x 63 x 13.4 mm)	4.41" x 2.36" x 0.87" (112 x 60 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)
Form Factor	Clamshell	Slab	Slab	Clamshell	Slab
Platform / OS	(proprietary)	Windows Mobile Professional	Palm OS	(proprietary)	Android
Network Bands	CDMA: 850, 1900 AMPS: 850	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900	CDMA: 850, 1900 AMPS: 850	4G WiMAX: 41 CDMA: 850, 1900
Data Technology	1xRTT	HSDPA 3.6	1xRTT	1xRTT	WiMAX
Features
GPS / Location	Yes	n/a	n/a	Yes	n/a
Accessibility
Adjustable Text Size	-	n/a	n/a	-	n/a
Hearing Aid Compatible	-	Yes M4, T3 (mostly tele-coil compatible)	-	-	Yes
Multiple Languages	Yes	n/a	n/a	Yes	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
USB	-	Yes Micro-USB	Yes	Yes	Yes
Wi-Fi	-	Yes 802.11 b,g	-	-	Yes 802.11 b,g
Contacts
Picture ID	Yes	n/a	n/a	-	n/a
Ringer ID	Yes	n/a	n/a	-	n/a
Voice Dialing	Yes	n/a	n/a	Yes	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	n/a	n/a	Yes	n/a
WAP / Web Browser	Yes	n/a	n/a	Yes	n/a
Input
Predictive Text Entry	Yes	n/a	n/a	Yes	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Stylus	-	Yes	-	-	-
Text Keyboard, Hardware	-	Yes	Yes	-	-
Touch Screen	-	Yes Resistive	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	-	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
TV Output	-	-	-	-	Yes
Productivity
Alarm	Yes	n/a	n/a	-	n/a
Calculator	Yes	n/a	n/a	-	n/a
Calendar	Yes	n/a	n/a	Yes	n/a
To-Do List	Yes	n/a	n/a	-	n/a
Voice Memo	Yes	n/a	n/a	Yes	n/a
Software
Games	Yes	n/a	n/a	Yes	n/a
Java (J2ME)	Yes	n/a	n/a	-	n/a
Voice
Headset Jack (2.5 mm)	Yes	n/a	n/a	Yes	n/a
Speaker Phone	-	Yes	Yes	-	Yes
	Samsung SPH-A660 / VI660	HP iPAQ Glisten	Palm Treo 600 (CDMA)	Samsung SCH-A310	HTC EVO 4G
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NOTE: Differences are highlighted with bold / black text for visual clarity only.


Phone	Samsung SPH-A660 / VI660	HP iPAQ Glisten	Palm Treo 600 (CDMA)	Samsung SCH-A310	HTC EVO 4G