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Phone	Samsung Galaxy S II, Epic 4G Touch	Samsung DoubleTime	BlackBerry Curve 3G 9330	Motorola Rival A455	Motorola Droid Bionic
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	4.5" diag. 5 : 3	3.2" diag. 5 : 3	2.5" diag. 4 : 3	2.2" diag. 4 : 3	4.3" diag. 16 : 9
Display Resolution & Type	480 x 800 pixels (~206 ppi) AMOLED	320 x 480 pixels (~180 ppi) LCD (TFT/TFD)	320 x 240 pixels (~160 ppi) LCD (TFT/TFD)	176 x 220 pixels (~131 ppi) LCD (TFT/TFD)	540 x 960 pixels (~256 ppi) LCD (TFT/TFD)
Display Refresh	60 Hz	60 Hz	?	?	60 Hz
Battery	1,800 mAh	1,200 mAh	1,150 mAh	940 mAh	1,735 mAh
Processor	1.2 GHz Samsung Exynos C210 dual-core	600 MHz Qualcomm	?	?	1 GHz TI OMAP 4430 (dual-core ARM Cortex-A9)
RAM	?	?	?	?	1 GB
Storage	16 GB	? raw hardware	? raw hardware	? raw hardware	12 GB *
Main Camera	8 megapixel	3 megapixel	2 megapixel	2 megapixel	8 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	1080p HD	QVGA (320 x 240)	?	QVGA (320 x 240)	1080p HD
Front Camera	2 megapixel	-	-	-	Yes
Weight	4.55 oz (129g)	5.22 oz (148g)	3.7 oz (105g)	4.48 oz (127g)	5.6 oz (159g)
Dimensions	5.1" x 2.7" x 0.38" (130 x 69 x 9.6 mm)	4.45" x 2.44" x 0.59" (113 x 62 x 15 mm)	4.29" x 2.36" x 0.55" (109 x 60 x 14 mm)	3.82" x 1.96" x 0.73" (97 x 50 x 18.5 mm)	5" x 2.63" x 0.43" (127 x 67 x 10.9 mm)
Form Factor	Slab	Clamshell	Slab	Slide	Slab
Platform / OS	Android	Android	BlackBerry OS	(proprietary)	Android
Network Bands	4G WiMAX: 41 CDMA: 800, 850, 1900 *	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900	CDMA: 850, 1900	4G LTE: 13 CDMA: 850, 1900
Data Technology	WiMAX	HSPA 7.2	EVDO r0	EVDO r0	LTE (Cat 3)
Features
GPS / Location	n/a	n/a	n/a	Yes	n/a
Accessibility
Adjustable Text Size	n/a	n/a	n/a	-	n/a
Hearing Aid Compatible	Yes	Yes	Yes	Yes	Yes
Multiple Languages	n/a	n/a	n/a	Yes	n/a
TTY/TDD (Digital)	Yes	Yes	Yes	Yes	Yes
Alerts
Ringer Profiles	-	-	Yes	-	-
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	Yes
Mobile Hotspot	n/a	n/a	n/a	-	n/a
USB	Yes Micro-USB	Yes Micro-USB	Yes Micro-USB	Yes Micro-USB	Yes
Wi-Fi	Yes 4 (802.11 a,b,g,n)	Yes 4 (802.11 b,g,n)	Yes 802.11 b,g	-	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	n/a	n/a	n/a	Yes	n/a
Ringer ID	n/a	n/a	n/a	Yes	n/a
Voice Dialing	n/a	n/a	n/a	Yes	n/a
Customization
Custom Graphics	n/a	n/a	n/a	Yes	n/a
Custom Ringtones	n/a	n/a	n/a	Yes	n/a
Real-Music Ringers	n/a	n/a	n/a	Yes	n/a
Data & Network
Data Tethering	n/a	n/a	n/a	Yes	n/a
WAP / Web Browser	n/a	n/a	n/a	Yes	n/a
Input
Predictive Text Entry	n/a	n/a	n/a	-	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	Yes	Yes	Yes	-
Touch Screen	Yes	Yes	-	Yes	Yes
Memory
Memory Card Slot	Yes	Yes	Yes	Yes	Yes
Messaging
Email Client	n/a	n/a	n/a	Yes	n/a
EMS / Picture Messaging	n/a	n/a	n/a	Yes	n/a
Instant Messaging	n/a	n/a	n/a	Yes	n/a
MMS	n/a	n/a	n/a	Yes	n/a
Text Messaging Templates	n/a	n/a	n/a	Yes	n/a
Music
Headphone Jack (3.5mm)	Yes	Yes	Yes	Yes	Yes
Music Player	n/a	n/a	n/a	Yes	n/a
Photo & Video
DLNA	Yes	-	-	-	Yes
TV Output	Yes	-	-	-	Yes
Productivity
Alarm	n/a	n/a	n/a	Yes	n/a
Calculator	n/a	n/a	n/a	Yes	n/a
Calendar	n/a	n/a	n/a	Yes	n/a
To-Do List	n/a	n/a	n/a	-	n/a
Voice Memo	n/a	n/a	n/a	Yes	n/a
Software
BREW	n/a	n/a	n/a	Yes	n/a
Games	n/a	n/a	n/a	Yes	n/a
Java (J2ME)	n/a	n/a	n/a	-	n/a
Voice
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	Samsung Galaxy S II, Epic 4G Touch	Samsung DoubleTime	BlackBerry Curve 3G 9330	Motorola Rival A455	Motorola Droid Bionic
	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 DoubleTime	BlackBerry Curve 3G 9330	Motorola Rival A455	Motorola Droid Bionic