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Phone	ZTE Agent	Samsung SGH-X640	Samsung Nexus S	Samsung SPH/SCH-N300	Coolpad Quattro 4G
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	?	4" diag. 5 : 3
Display Resolution & Type	240 x 320 pixels (~167 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (TFT/TFD)	480 x 800 pixels (~233 ppi) AMOLED	128 x 64 pixels	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	?	60 Hz
Battery	900 mAh	800 mAh	1,500 mAh	?	1,600 mAh
Processor	?	?	1 GHz Samsung Hummingbird Cortex A8	?	?
RAM	?	?	?	?	?
Storage	? raw hardware	? raw hardware	16 GB	? raw hardware	512 MB
Main Camera	1 megapixel	Yes	5 megapixel	-	3 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	?	-	WVGA / 480p	-	VGA (640 x 480)
Front Camera	-	-	Yes	-	Yes
Weight	3.53 oz (100g)	3 oz (85g)	4.55 oz (129g)	4.1 oz (116g)	3.31 oz (94g)
Dimensions	4.3" x 1.9" x 0.6" (109 x 48 x 15.2 mm)	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	4.88" x 2.48" x 0.43" (124 x 63 x 10.9 mm)	4.5" x 1.9" x 0.9" (114 x 48 x 22.9 mm)	4.96" x 2.6" x 0.51" (126 x 66 x 13 mm)
Form Factor	Slab	Clamshell	Slab	Flip	Slab
Platform / OS	(proprietary)	(proprietary)	Android	(proprietary)	Android
Network Bands	CDMA: 850, 1700, 1900	GSM: 900, 1800, 1900	WCDMA: 1, 4, 8 GSM: 850, 900, 1800, 1900 *	CDMA: 850, 1900 AMPS: 850	4G LTE: 2, 4 CDMA: 850, 1700, 1900
Data Technology	1xRTT	GPRS	HSPA 7.2	-	LTE (Cat 3)
Features
GPS / Location	Yes	-	n/a	Yes	n/a
Accessibility
Hearing Aid Compatible	Yes	-	Yes	-	Yes
Multiple Languages	Yes	Yes	n/a	-	n/a
TTY/TDD (Digital)	Yes	-	-	-	Yes
Connectivity
Bluetooth	Yes	-	Yes	-	Yes
Mobile Hotspot	-	-	n/a	-	n/a
NFC	-	-	Yes	-	-
USB	Yes Micro-USB	-	Yes Micro-USB	-	Yes
Wi-Fi	-	-	Yes 4 (802.11 b,g,n)	-	Yes
Contacts
Picture ID	-	Yes	n/a	-	n/a
Ringer ID	Yes	Yes	n/a	-	n/a
Voice Dialing	-	-	n/a	Yes	n/a
Customization
Custom Graphics	Yes	Yes	n/a	-	n/a
Custom Ringtones	Yes	Yes	n/a	-	n/a
Real-Music Ringers	Yes	-	n/a	-	n/a
Data & Network
Data Tethering	-	-	n/a	Yes	n/a
WAP / Web Browser	Yes	Yes	n/a	Yes	n/a
Input
Predictive Text Entry	Yes	Yes	n/a	Yes	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Touch Screen	-	-	Yes	-	Yes
Memory
Memory Card Slot	Yes	-	-	-	Yes
Messaging
Email Client	Yes	-	n/a	-	n/a
EMS / Picture Messaging	-	Yes	n/a	-	n/a
Instant Messaging	Yes	-	n/a	-	n/a
MMS	Yes	Yes	n/a	-	n/a
Text Messaging Templates	Yes	Yes	n/a	-	n/a
Music
Headphone Jack (3.5mm)	Yes	-	Yes	-	Yes
Music Player	Yes	-	n/a	-	n/a
Productivity
Alarm	Yes	Yes	n/a	Yes	n/a
Calculator	Yes	Yes	n/a	Yes	n/a
Calendar	Yes	Yes	n/a	Yes	n/a
To-Do List	-	Yes	n/a	Yes	n/a
Voice Memo	Yes	Yes	n/a	-	n/a
Software
BREW	Yes	-	n/a	-	n/a
Games	Yes	Yes	n/a	Yes	n/a
Java (J2ME)	-	Yes	n/a	-	n/a
Voice
Headset Jack (2.5 mm)	-	Yes	n/a	Yes	n/a
Speaker Phone	Yes	Yes	Yes	-	Yes
	ZTE Agent	Samsung SGH-X640	Samsung Nexus S	Samsung SPH/SCH-N300	Coolpad Quattro 4G
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NOTE: Differences are highlighted with bold / black text for visual clarity only.


Phone	ZTE Agent	Samsung SGH-X640	Samsung Nexus S	Samsung SPH/SCH-N300	Coolpad Quattro 4G