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Phone	Samsung SGH-X640	Samsung Galaxy S II, Epic 4G Touch	Samsung Glyde U940	Cal-Comp EZ	HTC G2
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	4.5" diag. 5 : 3	2.8" diag. 16.5 : 9	?	3.7" diag. 5 : 3
Display Resolution & Type	128 x 160 pixels LCD (TFT/TFD)	480 x 800 pixels (~206 ppi) AMOLED	240 x 440 pixels (~182 ppi) LCD (TFT/TFD)	128 x 128 pixels LCD (STN)	480 x 800 pixels (~252 ppi) LCD (TFT/TFD)
Display Refresh	?	60 Hz	?	?	60 Hz
Battery	800 mAh	1,800 mAh	1,000 mAh	800 mAh	1,300 mAh
Processor	?	1.2 GHz Samsung Exynos C210 dual-core	?	?	800 MHz Qualcomm S2 MSM7230
RAM	?	?	?	?	?
Storage	? raw hardware	16 GB	? raw hardware	? raw hardware	? raw hardware
Main Camera	Yes	8 megapixel	2 megapixel	-	5 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	1080p HD	QVGA (320 x 240)	-	720p HD
Front Camera	-	2 megapixel	-	-	-
Weight	3 oz (85g)	4.55 oz (129g)	4.2 oz (119g)	2.47 oz (70g)	6.5 oz (184g)
Dimensions	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	5.1" x 2.7" x 0.38" (130 x 69 x 9.6 mm)	4.09" x 1.98" x 0.71" (104 x 50 x 18 mm)	4.04" x 1.71" x 0.63" (103 x 43 x 16 mm)	4.68" x 2.37" x 0.55" (119 x 60 x 14 mm)
Form Factor	Clamshell	Slab	Slide	Slab	Slab
Platform / OS	(proprietary)	Android	(proprietary)	(proprietary)	Android
Network Bands	GSM: 900, 1800, 1900	4G WiMAX: 41 CDMA: 800, 850, 1900 *	CDMA: 850, 1900	CDMA: 850, 1900	WCDMA: 1, 4 GSM: 850, 900, 1800, 1900
Data Technology	GPRS	WiMAX	EVDO r0	1xRTT	HSPA 14.4
Features
GPS / Location	-	n/a	Yes	Yes	n/a
Accessibility
Hearing Aid Compatible	-	Yes M4, T3 (mostly tele-coil compatible)	Yes M4 (very compatible)	-	Yes M3 (mostly compatible)
Multiple Languages	Yes	n/a	Yes	Yes	n/a
TTY/TDD (Digital)	-	Yes	Yes	-	-
Connectivity
Bluetooth	-	Yes	Yes	-	Yes
Mobile Hotspot	-	n/a	-	-	n/a
USB	-	Yes Micro-USB	Yes	Yes Mini-USB	Yes
Wi-Fi	-	Yes 4 (802.11 a,b,g,n)	-	-	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	Yes	n/a	Yes	-	n/a
Ringer ID	Yes	n/a	Yes	-	n/a
Voice Dialing	-	n/a	Yes	-	n/a
Customization
Custom Graphics	Yes	n/a	Yes	-	n/a
Custom Ringtones	Yes	n/a	Yes	-	n/a
Real-Music Ringers	-	n/a	Yes	-	n/a
Data & Network
Data Tethering	-	n/a	Yes	-	n/a
WAP / Web Browser	Yes	n/a	Yes	-	n/a
Input
Predictive Text Entry	Yes	n/a	Yes	-	n/a
Side Keys	Yes	Yes	Yes	-	Yes
Text Keyboard, Hardware	-	-	Yes	-	Yes
Touch Screen	-	Yes Capacitive	Yes	-	Yes Capacitive
Memory
Memory Card Slot	-	Yes	Yes	-	Yes
Messaging
Email Client	-	n/a	-	-	n/a
EMS / Picture Messaging	Yes	n/a	-	-	n/a
Instant Messaging	-	n/a	-	-	n/a
MMS	Yes	n/a	Yes	-	n/a
Text Messaging Templates	Yes	n/a	Yes	Yes	n/a
Music
Headphone Jack (3.5mm)	-	Yes	-	-	Yes
Music Player	-	n/a	Yes	-	n/a
Photo & Video
DLNA	-	Yes	-	-	-
TV Output	-	Yes	-	-	-
Productivity
Alarm	Yes	n/a	Yes	Yes	n/a
Calculator	Yes	n/a	Yes	Yes	n/a
Calendar	Yes	n/a	Yes	Yes	n/a
To-Do List	Yes	n/a	-	Yes	n/a
Voice Memo	Yes	n/a	-	Yes *	n/a
Software
BREW	-	n/a	Yes	-	n/a
Games	Yes	n/a	Yes	-	n/a
Java (J2ME)	Yes	n/a	-	-	n/a
Voice
Headset Jack (2.5 mm)	Yes	n/a	Yes	Yes	n/a
Speaker Phone	Yes	Yes	Yes	-	Yes
	* Some versions only
	Samsung SGH-X640	Samsung Galaxy S II, Epic 4G Touch	Samsung Glyde U940	Cal-Comp EZ	HTC G2
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung SGH-X640	Samsung Galaxy S II, Epic 4G Touch	Samsung Glyde U940	Cal-Comp EZ	HTC G2