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Phone	ZTE ZMAX 2	Samsung Transform Ultra	Samsung Droid Charge	HTC EVO 4G LTE	Samsung Rugby A837
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	5.5" diag. 16 : 9	3.5" diag. 5 : 3	4.3" diag. 5 : 3	4.7" diag. 16 : 9	2" diag. 4 : 3
Display Resolution & Type	720 x 1280 pixels (~267 ppi) LCD (TFT/TFD)	320 x 480 pixels (~165 ppi) LCD (TFT/TFD)	480 x 800 pixels (~217 ppi) AMOLED	720 x 1280 pixels (~312 ppi) LCD (TFT/TFD)	176 x 220 pixels (~141 ppi) LCD (TFT/TFD)
Display Refresh	60 Hz	60 Hz	60 Hz	60 Hz	?
Battery	3,000 mAh	1,500 mAh	1,500 mAh	2,000 mAh	1,000 mAh
Processor	1.2 GHz Qualcomm Snapdragon 400 (MSM8916)	1 GHz Qualcomm Snapdragon S2 MSM8655	1 GHz Samsung Hummingbird	1.5 GHz Qualcomm Snapdragon S4	?
RAM	2 GB	?	?	1 GB	?
Storage	16 GB	? raw hardware	? raw hardware	16 GB	? raw hardware
Main Camera	8 megapixel	3 megapixel	8 megapixel	8 megapixel	1 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	720p HD	VGA (640 x 480)	720p HD	1080p HD	QCIF (176 x 144)
Front Camera	2 megapixel	Yes	1 megapixel	1 megapixel	-
Weight	5.99 oz (170g)	4.9 oz (139g)	5.06 oz (144g)	5.05 oz (143g)	4.66 oz (132g)
Dimensions	6.06" x 2.99" x 0.37" (154 x 76 x 9.4 mm)	4.5" x 2.4" x 0.55" (114 x 61 x 14 mm)	5.1" x 2.68" x 0.46" (130 x 68 x 11.7 mm)	5.3" x 2.7" x 0.35" (135 x 69 x 8.9 mm)	3.95" x 2.05" x 0.9" (100 x 52 x 22.9 mm)
Form Factor	Slab	Slide	Slab	Slab	Clamshell
Platform / OS	Android	Android	Android	Android	(proprietary)
Network Bands	4G LTE: 2, 4, 5, 12 WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 *	CDMA: 800, 850, 1900	4G LTE: 13 CDMA: 850, 1900	4G LTE: 25 CDMA: 800, 850, 1900	WCDMA: 2, 5 GSM: 850, 900, 1800, 1900
Data Technology	LTE (Cat 4)	EVDO rA	LTE (Cat 3)	LTE (Cat 3)	HSDPA 3.6
Features
GPS / Location	n/a	n/a	n/a	n/a	Yes
Ruggedized	-	-	-	-	Yes
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	n/a	Yes
TTY/TDD (Digital)	Yes	Yes	Yes	Yes	Yes
Alerts
Extra Display	-	-	-	-	Yes
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	Yes
Mobile Hotspot	n/a	n/a	n/a	n/a	-
NFC	-	-	-	Yes	-
USB	Yes Micro-USB	Yes	Yes Micro-USB	Yes Micro-USB	Yes
Wi-Fi	Yes 4 (802.11 b,g,n)	Yes 4 (802.11 a,b,g,n)	Yes 4 (802.11 b,g,n)	Yes 4 (802.11 a,b,g,n)	-
Contacts
Picture ID	n/a	n/a	n/a	n/a	Yes
Ringer ID	n/a	n/a	n/a	n/a	Yes
Voice Dialing	n/a	n/a	n/a	n/a	-
Customization
Custom Graphics	n/a	n/a	n/a	n/a	Yes
Custom Ringtones	n/a	n/a	n/a	n/a	Yes
Real-Music Ringers	n/a	n/a	n/a	n/a	Yes
Data & Network
Data Tethering	n/a	n/a	n/a	n/a	Yes
WAP / Web Browser	n/a	n/a	n/a	n/a	Yes
Input
Predictive Text Entry	n/a	n/a	n/a	n/a	Yes
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	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	n/a	Yes
Instant Messaging	n/a	n/a	n/a	n/a	Yes
MMS	n/a	n/a	n/a	n/a	Yes
Text Messaging Templates	n/a	n/a	n/a	n/a	Yes
Music
Headphone Jack (3.5mm)	Yes	Yes	Yes	Yes	-
Music Player	n/a	n/a	n/a	n/a	Yes
Photo & Video
DLNA	-	-	Yes	Yes	-
TV Output	-	-	Yes	-	-
Video Calling	n/a	n/a	n/a	n/a	-
Productivity
Alarm	n/a	n/a	n/a	n/a	Yes
Calculator	n/a	n/a	n/a	n/a	Yes
Calendar	n/a	n/a	n/a	n/a	Yes
To-Do List	n/a	n/a	n/a	n/a	-
Voice Memo	n/a	n/a	n/a	n/a	Yes
Software
Games	n/a	n/a	n/a	n/a	Yes
Java (J2ME)	n/a	n/a	n/a	n/a	Yes
Voice
HD Voice	-	-	-	Yes	-
Push-To-Talk	-	-	-	-	Yes
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	ZTE ZMAX 2	Samsung Transform Ultra	Samsung Droid Charge	HTC EVO 4G LTE	Samsung Rugby A837
	X >	< X >	< X >	< X >	< X

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


Phone	ZTE ZMAX 2	Samsung Transform Ultra	Samsung Droid Charge	HTC EVO 4G LTE	Samsung Rugby A837