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Phone	Ericsson R278d	Cal-Comp EZ	HTC EVO Design 4G / Hero S (CDMA)	Samsung Sidekick 4G	HTC myTouch 4G Slide
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	?	4" diag. 16 : 9	3.5" diag. 5 : 3	3.7" diag. 5 : 3
Display Resolution & Type	101 x 40 pixels	128 x 128 pixels LCD (STN)	540 x 960 pixels (~275 ppi) LCD (TFT/TFD)	480 x 800 pixels (~267 ppi) LCD (TFT/TFD)	480 x 800 pixels (~252 ppi) LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	60 Hz	60 Hz
Battery	?	800 mAh	1,520 mAh	?	1,520 mAh
Processor	?	?	1.2 GHz Qualcomm Snapdragon S2 MSM8655	1 GHz Samsung Hummingbird Cortex A8	1.2 GHz Qualcomm Snapdragon S3 MSM8260 (dual-core)
RAM	?	?	768 MB	?	?
Storage	? raw hardware	? raw hardware	4 GB	? raw hardware	? raw hardware
Main Camera	-	-	5 megapixel	3 megapixel	8 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	-	720p HD	WVGA / 480p	1080p HD
Front Camera	-	-	1 megapixel	Yes	Yes
Weight	9.28 oz (263g)	2.47 oz (70g)	5.22 oz (148g)	5.7 oz (162g)	6.5 oz (184g)
Dimensions	5.1" x 2" x 1" (130 x 51 x 25.4 mm)	4.04" x 1.71" x 0.63" (103 x 43 x 16 mm)	4.78" x 2.44" x 0.46" (122 x 62 x 11.8 mm)	5" x 2.42" x 0.6" (127 x 61 x 15.2 mm)	4.8" x 2.4" x 0.52" (122 x 61 x 13.2 mm)
Form Factor	Slab	Slab	Slab	Slide	Slide
Platform / OS	(proprietary)	(proprietary)	Android	Android	Android
Network Bands	TDMA: 850, 1900 AMPS: 850	CDMA: 850, 1900	4G WiMAX: 41 WCDMA: 1, 8 CDMA: 800, 850, 1900 GSM: 850, 1900 *	WCDMA: 1, 4 GSM: 850, 900, 1800, 1900	WCDMA: 1, 4 GSM: 850, 900, 1800, 1900
Data Technology	-	1xRTT	WiMAX	HSPA+ 21	HSPA 14.4
Features
Flashlight	-	-	Yes	-	-
GPS / Location	-	Yes	n/a	n/a	n/a
Accessibility
Hearing Aid Compatible	-	-	Yes M4, T4 (very tele-coil compatible)	Yes M3, T3 (mostly tele-coil compatible)	Yes M3, T3 (mostly tele-coil compatible)
Multiple Languages	Yes	Yes	n/a	n/a	n/a
TTY/TDD (Digital)	-	-	Yes	Yes	-
Alerts
Ringer Profiles	Yes	-	-	-	-
Connectivity
Bluetooth	-	-	Yes	Yes	Yes
Mobile Hotspot	-	-	n/a	n/a	n/a
USB	-	Yes Mini-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 4 (802.11 b,g,n)
Contacts
Picture ID	-	-	n/a	n/a	n/a
Ringer ID	-	-	n/a	n/a	n/a
Voice Dialing	-	-	n/a	n/a	n/a
Customization
Custom Graphics	-	-	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	n/a
WAP / Web Browser	Yes	-	n/a	n/a	n/a
Input
Predictive Text Entry	Yes	-	n/a	n/a	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	n/a
Instant Messaging	-	-	n/a	n/a	n/a
MMS	-	-	n/a	n/a	n/a
Text Messaging Templates	-	Yes	n/a	n/a	n/a
Music
FM Radio	-	-	Yes	-	Yes
Headphone Jack (3.5mm)	-	-	Yes	Yes	Yes
Music Player	-	-	n/a	n/a	n/a
Photo & Video
DLNA	-	-	Yes	Yes	Yes
TV Output	-	-	-	-	Yes
Productivity
Alarm	Yes	Yes	n/a	n/a	n/a
Calculator	-	Yes	n/a	n/a	n/a
Calendar	-	Yes	n/a	n/a	n/a
To-Do List	-	Yes	n/a	n/a	n/a
Voice Memo	-	Yes *	n/a	n/a	n/a
Software
Games	-	-	n/a	n/a	n/a
Voice
Headset Jack (2.5 mm)	-	Yes	n/a	n/a	n/a
Speaker Phone	-	-	Yes	Yes	Yes
	* Some versions only
	Ericsson R278d	Cal-Comp EZ	HTC EVO Design 4G / Hero S (CDMA)	Samsung Sidekick 4G	HTC myTouch 4G Slide
	X >	< X >	< X >	< X >	< X

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


Phone	Ericsson R278d	Cal-Comp EZ	HTC EVO Design 4G / Hero S (CDMA)	Samsung Sidekick 4G	HTC myTouch 4G Slide