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Phone	Samsung Galaxy S II, Epic 4G Touch	Samsung SGH-X640	Samsung SPH/SCH-N300	Samsung Galaxy Stratosphere II	Cal-Comp EZ
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	4.5" diag. 5 : 3	?	?	4" diag. 5 : 3	?
Display Resolution & Type	480 x 800 pixels (~206 ppi) AMOLED	128 x 160 pixels LCD (TFT/TFD)	128 x 64 pixels	480 x 800 pixels (~233 ppi) AMOLED	128 x 128 pixels LCD (STN)
Display Refresh	60 Hz	?	?	60 Hz	?
Battery	1,800 mAh	800 mAh	?	1,800 mAh	800 mAh
Processor	1.2 GHz Samsung Exynos C210 dual-core	?	?	1.2 GHz Qualcomm Snapdragon S4 Plus MSM8960	?
RAM	?	?	?	1 GB	?
Storage	16 GB	? raw hardware	? raw hardware	8 GB	? raw hardware
Main Camera	8 megapixel	Yes	-	5 megapixel	-
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	1080p HD	-	-	720p HD	-
Front Camera	2 megapixel	-	-	1 megapixel	-
Weight	4.55 oz (129g)	3 oz (85g)	4.1 oz (116g)	5.43 oz (154g)	2.47 oz (70g)
Dimensions	5.1" x 2.7" x 0.38" (130 x 69 x 9.6 mm)	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	4.5" x 1.9" x 0.9" (114 x 48 x 22.9 mm)	4.97" x 2.58" x 0.53" (126 x 66 x 13.5 mm)	4.04" x 1.71" x 0.63" (103 x 43 x 16 mm)
Form Factor	Slab	Clamshell	Flip	Slide	Slab
Platform / OS	Android	(proprietary)	(proprietary)	Android	(proprietary)
Network Bands	4G WiMAX: 41 CDMA: 800, 850, 1900 *	GSM: 900, 1800, 1900	CDMA: 850, 1900 AMPS: 850	4G LTE: 13 WCDMA: 1 CDMA: 850, 1900 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900
Data Technology	WiMAX	GPRS	-	LTE (Cat 3)	1xRTT
Features
GPS / Location	n/a	-	Yes	n/a	Yes
Accessibility
Adjustable Text Size	n/a	-	-	n/a	-
Hearing Aid Compatible	Yes M4, T3 (mostly tele-coil compatible)	-	-	Yes M3 (mostly compatible)	-
Multiple Languages	n/a	Yes	-	n/a	Yes
TTY/TDD (Digital)	Yes	-	-	Yes	-
Connectivity
Bluetooth	Yes	-	-	Yes	-
Mobile Hotspot	n/a	-	-	n/a	-
NFC	-	-	-	Yes	-
USB	Yes Micro-USB	-	-	Yes	Yes Mini-USB
Wi-Fi	Yes 4 (802.11 a,b,g,n)	-	-	Yes 4 (802.11 a,b,g,n)	-
Contacts
Picture ID	n/a	Yes	-	n/a	-
Ringer ID	n/a	Yes	-	n/a	-
Voice Dialing	n/a	-	Yes	n/a	-
Customization
Custom Graphics	n/a	Yes	-	n/a	-
Custom Ringtones	n/a	Yes	-	n/a	-
Real-Music Ringers	n/a	-	-	n/a	-
Data & Network
Data Tethering	n/a	-	Yes	n/a	-
WAP / Web Browser	n/a	Yes	Yes	n/a	-
Input
Predictive Text Entry	n/a	Yes	Yes	n/a	-
Side Keys	Yes	Yes	Yes	Yes	-
Touch Screen	Yes Capacitive	-	-	Yes Capacitive	-
Memory
Memory Card Slot	Yes	-	-	Yes	-
Messaging
Email Client	n/a	-	-	n/a	-
EMS / Picture Messaging	n/a	Yes	-	n/a	-
Instant Messaging	n/a	-	-	n/a	-
MMS	n/a	Yes	-	n/a	-
Text Messaging Templates	n/a	Yes	-	n/a	Yes
Music
Headphone Jack (3.5mm)	Yes	-	-	Yes	-
Music Player	n/a	-	-	n/a	-
Photo & Video
DLNA	Yes	-	-	Yes	-
TV Output	Yes	-	-	-	-
Productivity
Alarm	n/a	Yes	Yes	n/a	Yes
Calculator	n/a	Yes	Yes	n/a	Yes
Calendar	n/a	Yes	Yes	n/a	Yes
To-Do List	n/a	Yes	Yes	n/a	Yes
Voice Memo	n/a	Yes	-	n/a	Yes *
Software
Games	n/a	Yes	Yes	n/a	-
Java (J2ME)	n/a	Yes	-	n/a	-
Voice
Headset Jack (2.5 mm)	n/a	Yes	Yes	n/a	Yes
Speaker Phone	Yes	Yes	-	Yes	-
	* Some versions only
	Samsung Galaxy S II, Epic 4G Touch	Samsung SGH-X640	Samsung SPH/SCH-N300	Samsung Galaxy Stratosphere II	Cal-Comp EZ
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung Galaxy S II, Epic 4G Touch	Samsung SGH-X640	Samsung SPH/SCH-N300	Samsung Galaxy Stratosphere II	Cal-Comp EZ