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Phone	Samsung M400	ZTE Concord II	Samsung DoubleTime	Samsung Droid Charge	Samsung SGH-X820
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	2.4" diag. 4 : 3	4" diag. 5 : 3	3.2" diag. 5 : 3	4.3" diag. 5 : 3	?
Display Resolution & Type	240 x 320 pixels (~167 ppi) LCD (TFT/TFD)	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	320 x 480 pixels (~180 ppi) LCD (TFT/TFD)	480 x 800 pixels (~217 ppi) AMOLED	220 x 176 pixels LCD (TFT/TFD)
Display Refresh	?	60 Hz	60 Hz	60 Hz	?
Battery	1,000 mAh	1,820 mAh	1,200 mAh	1,500 mAh	650 mAh
Processor	400 MHz Qualcomm QSC6155	1.2 GHz Qualcomm MSM8210	600 MHz Qualcomm	1 GHz Samsung Hummingbird	?
RAM	128 MB	1 GB	?	?	?
Storage	256 MB	4 GB	? raw hardware	? raw hardware	? raw hardware
Main Camera	1 megapixel	5 megapixel	3 megapixel	8 megapixel	2 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	720p HD	QVGA (320 x 240)	720p HD	?
Front Camera	-	-	-	1 megapixel	-
Weight	3.7 oz (105g)	4.4 oz (125g)	5.22 oz (148g)	5.06 oz (144g)	2.33 oz (66g)
Dimensions	3.8" x 1.9" x 0.7" (97 x 48 x 17.8 mm)	4.96" x 2.56" x 0.42" (126 x 65 x 10.7 mm)	4.45" x 2.44" x 0.59" (113 x 62 x 15 mm)	5.1" x 2.68" x 0.46" (130 x 68 x 11.7 mm)	4.45" x 1.97" x 0.27" (113 x 50 x 6.9 mm)
Form Factor	Clamshell	Slab	Clamshell	Slab	Slab
Platform / OS	(proprietary)	Android	Android	Android	(proprietary)
Network Bands	CDMA: 800, 850, 1900	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	4G LTE: 13 CDMA: 850, 1900	GSM: 900, 1800, 1900
Data Technology	1xRTT	HSPA+ 21	HSPA 7.2	LTE (Cat 3)	EDGE
Features
GPS / Location	Yes	n/a	n/a	n/a	-
Accessibility
Adjustable Text Size	Yes	n/a	n/a	n/a	-
Hearing Aid Compatible	Yes	Yes	Yes	Yes	-
Multiple Languages	Yes	n/a	n/a	n/a	Yes
TTY/TDD (Digital)	Yes	Yes	Yes	Yes	-
Alerts
Extra Display	Yes	-	-	-	-
Connectivity
Bluetooth	Yes Classic Audio	Yes Classic Audio	Yes Classic Audio	Yes Classic Audio	Yes Classic Audio
Mobile Hotspot	-	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 b,g,n)	Yes 4 (802.11 b,g,n)	Yes 4 (802.11 b,g,n)	-
Contacts
Picture ID	Yes	n/a	n/a	n/a	Yes
Ringer ID	Yes	n/a	n/a	n/a	Yes
Voice Dialing	Yes	n/a	n/a	n/a	-
Customization
Custom Graphics	Yes	n/a	n/a	n/a	Yes
Custom Ringtones	Yes	n/a	n/a	n/a	Yes
Real-Music Ringers	Yes	n/a	n/a	n/a	Yes
Data & Network
Data Tethering	-	n/a	n/a	n/a	-
External Antenna Jack	-	n/a	n/a	n/a	Yes
WAP / Web Browser	Yes	n/a	n/a	n/a	Yes
Input
Predictive Text Entry	Yes	n/a	n/a	n/a	Yes
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	-	Yes	-	-
Touch Screen	-	Yes	Yes	Yes	-
Memory
Memory Card Slot	-	Yes	Yes	Yes	-
Messaging
Email Client	-	n/a	n/a	n/a	Yes
EMS / Picture Messaging	-	n/a	n/a	n/a	Yes
Instant Messaging	-	n/a	n/a	n/a	-
MMS	Yes	n/a	n/a	n/a	Yes
Text Messaging Templates	Yes	n/a	n/a	n/a	Yes
Music
Headphone Jack (3.5mm)	Yes	Yes	Yes	Yes	-
Music Player	-	n/a	n/a	n/a	-
Photo & Video
DLNA	-	-	-	Yes	-
TV Output	-	-	-	Yes	Yes
Video Calling	-	n/a	n/a	n/a	-
Productivity
Alarm	Yes	n/a	n/a	n/a	Yes
Calculator	Yes	n/a	n/a	n/a	Yes
Calendar	Yes	n/a	n/a	n/a	Yes
To-Do List	-	n/a	n/a	n/a	Yes
Voice Memo	Yes	n/a	n/a	n/a	Yes
Software
Games	Yes	n/a	n/a	n/a	Yes
Java (J2ME)	-	n/a	n/a	n/a	Yes
Voice
HD Voice	-	Yes	-	-	-
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	Samsung M400	ZTE Concord II	Samsung DoubleTime	Samsung Droid Charge	Samsung SGH-X820
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung M400	ZTE Concord II	Samsung DoubleTime	Samsung Droid Charge	Samsung SGH-X820