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Phone	Motorola Charm	Samsung SCH-U430	Samsung Rugby 4	Samsung SPH-i550	HTC EVO 4G
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Not yet released	Released
Display Size	2.8" diag. 4 : 3	?	2.4" diag. 4 : 3	?	4.3" diag. 5 : 3
Display Resolution & Type	320 x 240 pixels (~143 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (TFT/TFD)	240 x 320 pixels (~167 ppi) LCD (TFT/TFD)	320 x 320 pixels LCD (TFT/TFD)	480 x 800 pixels (~217 ppi) LCD (TFT/TFD)
Display Refresh	60 Hz	?	?	?	60 Hz
Battery	1,170 mAh	1,000 mAh	1,300 mAh	?	1,500 mAh
Processor	720 MHz TI OMAP3410	?	Intel XMM6230	200 MHz Motorola MX-1	1 GHz Qualcomm Snapdragon S1 QSD8650
RAM	?	?	128 MB	?	?
Storage	? raw hardware	? raw hardware	256 MB	? raw hardware	? raw hardware
Main Camera	3 megapixel	Yes	3 megapixel	1 megapixel	8 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	?	-	QVGA (320 x 240)	?	720p HD
Front Camera	-	-	-	-	Yes
Weight	3.88 oz (110g)	3.21 oz (91g)	5.22 oz (148g)	?	6 oz (170g)
Dimensions	3.87" x 2.65" x 0.45" (98 x 67 x 11.4 mm)	3.67" x 1.85" x 0.78" (93 x 47 x 19.8 mm)	4.25" x 2.17" x 0.85" (108 x 55 x 21.6 mm)	3.46" x 2.34" x 1.1" (88 x 59 x 27.9 mm)	4.8" x 2.6" x 0.5" (122 x 66 x 12.7 mm)
Form Factor	Slab	Clamshell	Clamshell	Clamshell	Slab
Platform / OS	Android	(proprietary)	(proprietary)	Palm OS	Android
Network Bands	WCDMA: 4 GSM: 850, 900, 1800, 1900 *	CDMA: 850, 1900	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900 AMPS: 850	4G WiMAX: 41 CDMA: 850, 1900
Data Technology	HSDPA 3.6	1xRTT	HSPA+ 21	1xRTT	WiMAX
Features
GPS / Location	n/a	Yes	Yes	n/a	n/a
Ruggedized	-	-	Yes	-	-
Water-Resistant	-	-	Yes IPX7 (snorkeling)	-	-
Accessibility
Adjustable Text Size	n/a	Yes	Yes	n/a	n/a
Hearing Aid Compatible	-	Yes M4, T4 (very tele-coil compatible)	Yes M3, T3 (mostly tele-coil compatible)	-	Yes
Multiple Languages	n/a	Yes	Yes	n/a	n/a
TTY/TDD (Digital)	Yes	Yes	Yes	Yes	Yes
Alerts
Extra Display	-	Yes	Yes	Yes	-
Ringer Profiles	-	-	Yes	-	-
Connectivity
Bluetooth	Yes	Yes	Yes	-	Yes
Infrared (IR)	-	-	-	Yes	-
Mobile Hotspot	n/a	-	-	n/a	n/a
USB	Yes Micro-USB	-	Yes Micro-USB	-	Yes
Wi-Fi	Yes 4 (802.11 b,g,n)	-	Yes 4 (802.11 b,g,n)	-	Yes 802.11 b,g
Contacts
Picture ID	n/a	Yes	Yes	n/a	n/a
Ringer ID	n/a	Yes	Yes	n/a	n/a
Voice Dialing	n/a	Yes	Yes	n/a	n/a
Customization
Custom Graphics	n/a	Yes	Yes	n/a	n/a
Custom Ringtones	n/a	Yes	Yes	n/a	n/a
Real-Music Ringers	n/a	-	Yes	n/a	n/a
Data & Network
Data Tethering	n/a	-	-	n/a	n/a
WAP / Web Browser	n/a	Yes	Yes	n/a	n/a
Input
Predictive Text Entry	n/a	Yes	Yes	n/a	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	Yes	-	-	-	-
Touch Screen	Yes Capacitive	-	-	Yes	Yes Capacitive
Memory
Memory Card Slot	Yes	-	Yes	Yes	Yes
Messaging
Email Client	n/a	Yes	Yes	n/a	n/a
EMS / Picture Messaging	n/a	Yes	-	n/a	n/a
Instant Messaging	n/a	Yes	-	n/a	n/a
MMS	n/a	Yes	Yes	n/a	n/a
Text Messaging Templates	n/a	Yes	Yes	n/a	n/a
Music
FM Radio	-	-	-	-	Yes
Headphone Jack (3.5mm)	Yes	-	-	-	Yes
Music Player	n/a	-	Yes	n/a	n/a
Photo & Video
TV Output	-	-	-	-	Yes
Productivity
Alarm	n/a	Yes	Yes	n/a	n/a
Calculator	n/a	Yes	Yes	n/a	n/a
Calendar	n/a	Yes	Yes	n/a	n/a
To-Do List	n/a	-	Yes	n/a	n/a
Voice Memo	n/a	Yes	Yes	n/a	n/a
Software
BREW	n/a	Yes	-	n/a	n/a
Games	n/a	Yes	Yes	n/a	n/a
Java (J2ME)	n/a	-	Yes	n/a	n/a
Voice
Headset Jack (2.5 mm)	n/a	Yes	-	n/a	n/a
Push-To-Talk	-	-	Yes	-	-
Speaker Phone	Yes	Yes	Yes	-	Yes
	Motorola Charm	Samsung SCH-U430	Samsung Rugby 4	Samsung SPH-i550	HTC EVO 4G
	X >	< X >	< X >	< X >	< X

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


Phone	Motorola Charm	Samsung SCH-U430	Samsung Rugby 4	Samsung SPH-i550	HTC EVO 4G