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Phone	Samsung SGH-X640	HTC EVO Design 4G / Hero S (CDMA)	Alcatel 665	Samsung Droid Charge	Motorola i580
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	4" diag. 16 : 9	1.8" diag. 4 : 3	4.3" diag. 5 : 3	?
Display Resolution & Type	128 x 160 pixels LCD (TFT/TFD)	540 x 960 pixels (~275 ppi) LCD (TFT/TFD)	128 x 160 pixels (~116 ppi) LCD (TFT/TFD)	480 x 800 pixels (~217 ppi) AMOLED	176 x 220 pixels LCD (TFT/TFD)
Display Refresh	?	60 Hz	?	60 Hz	?
Battery	800 mAh	1,520 mAh	650 mAh	1,500 mAh	?
Processor	?	1.2 GHz Qualcomm Snapdragon S2 MSM8655	?	1 GHz Samsung Hummingbird	?
RAM	?	768 MB	16 MB	?	?
Storage	? raw hardware	4 GB	32 MB	? raw hardware	? raw hardware
Main Camera	Yes	5 megapixel	2 megapixel	8 megapixel	1 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	720p HD	QCIF (176 x 144)	720p HD	?
Front Camera	-	1 megapixel	-	1 megapixel	-
Weight	3 oz (85g)	5.22 oz (148g)	2.72 oz (77g)	5.06 oz (144g)	4.9 oz (139g)
Dimensions	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	4.78" x 2.44" x 0.46" (122 x 62 x 11.8 mm)	3.78" x 1.89" x 0.66" (96 x 48 x 16.8 mm)	5.1" x 2.68" x 0.46" (130 x 68 x 11.7 mm)	3.68" x 2.2" x 1.2" (93 x 56 x 30.5 mm)
Form Factor	Clamshell	Slab	Clamshell	Slab	Clamshell
Platform / OS	(proprietary)	Android	(proprietary)	Android	(proprietary)
Network Bands	GSM: 900, 1800, 1900	4G WiMAX: 41 WCDMA: 1, 8 CDMA: 800, 850, 1900 GSM: 850, 1900 *	GSM: 850, 1900	4G LTE: 13 CDMA: 850, 1900	iDEN: 800
Data Technology	GPRS	WiMAX	-	LTE (Cat 3)	WiDEN
Features
Flashlight	-	Yes	-	-	-
GPS / Location	-	n/a	-	n/a	Yes
Ruggedized	-	-	-	-	Yes
Accessibility
Hearing Aid Compatible	-	Yes M4, T4 (very tele-coil compatible)	Yes M4 (very compatible)	Yes M4, T4 (very tele-coil compatible)	Yes M3, T3 (mostly tele-coil compatible)
Multiple Languages	Yes	n/a	Yes	n/a	Yes
TTY/TDD (Digital)	-	Yes	-	Yes	Yes
Alerts
Extra Display	-	-	Yes	-	Yes
Ringer Profiles	-	-	Yes	-	Yes
Connectivity
Bluetooth	-	Yes	Yes	Yes	Yes
Mobile Hotspot	-	n/a	-	n/a	-
USB	-	Yes Micro-USB	Yes Micro-USB	Yes Micro-USB	-
Wi-Fi	-	Yes 4 (802.11 b,g,n)	-	Yes 4 (802.11 b,g,n)	-
Contacts
Picture ID	Yes	n/a	Yes	n/a	Yes
Ringer ID	Yes	n/a	Yes	n/a	Yes
Voice Dialing	-	n/a	-	n/a	Yes
Customization
Custom Graphics	Yes	n/a	Yes	n/a	Yes
Custom Ringtones	Yes	n/a	Yes	n/a	Yes
Real-Music Ringers	-	n/a	Yes	n/a	-
Data & Network
Data Tethering	-	n/a	-	n/a	Yes
WAP / Web Browser	Yes	n/a	Yes	n/a	Yes
Input
Predictive Text Entry	Yes	n/a	Yes	n/a	Yes
Side Keys	Yes	Yes	Yes	Yes	Yes
Touch Screen	-	Yes Capacitive	-	Yes Capacitive	-
Memory
Memory Card Slot	-	Yes	Yes	Yes	Yes
Messaging
Email Client	-	n/a	-	n/a	-
EMS / Picture Messaging	Yes	n/a	-	n/a	-
Instant Messaging	-	n/a	Yes	n/a	-
MMS	Yes	n/a	Yes	n/a	Yes
Text Messaging Templates	Yes	n/a	Yes	n/a	Yes
Music
FM Radio	-	Yes	Yes	-	-
Headphone Jack (3.5mm)	-	Yes	Yes	Yes	-
Music Player	-	n/a	Yes	n/a	Yes *
Photo & Video
DLNA	-	Yes	-	Yes	-
TV Output	-	-	-	Yes	-
Video Calling	-	n/a	-	n/a	-
Productivity
Alarm	Yes	n/a	Yes	n/a	-
Calculator	Yes	n/a	Yes	n/a	Yes *
Calendar	Yes	n/a	Yes	n/a	Yes
To-Do List	Yes	n/a	-	n/a	-
Voice Memo	Yes	n/a	Yes	n/a	Yes
Software
Games	Yes	n/a	Yes	n/a	Yes
Java (J2ME)	Yes	n/a	Yes	n/a	Yes
Voice
Headset Jack (2.5 mm)	Yes	n/a	-	n/a	Yes
Push-To-Talk	-	-	-	-	Yes
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Samsung SGH-X640	HTC EVO Design 4G / Hero S (CDMA)	Alcatel 665	Samsung Droid Charge	Motorola i580
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung SGH-X640	HTC EVO Design 4G / Hero S (CDMA)	Alcatel 665	Samsung Droid Charge	Motorola i580