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Phone	ZTE Z331	Samsung Intrepid SPH-i350	Samsung SGH-X640	ZTE Speed	Motorola V878
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	2.4" diag. 4 : 3	2.5" diag. 4 : 3	?	4.5" diag. 16 : 9	?
Display Resolution & Type	176 x 220 pixels (~117 ppi) LCD (TFT/TFD)	320 x 240 pixels (~160 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (TFT/TFD)	540 x 960 pixels (~245 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (TFT/TFD)
Display Refresh	?	?	?	60 Hz	?
Battery	950 mAh	1,480 mAh	800 mAh	2,000 mAh	?
Processor	?	Qualcomm MSM7600	?	1.2 GHz Qualcomm Snapdragon 410 MSM8916	?
RAM	?	?	?	1 GB	?
Storage	? raw hardware	? raw hardware	? raw hardware	8 GB	? raw hardware
Main Camera	3 megapixel	3 megapixel	Yes	5 megapixel	Yes
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	QCIF (176 x 144)	QVGA (320 x 240)	-	720p HD	?
Front Camera	-	-	-	2 megapixel	-
Weight	4 oz (113g)	4 oz (113g)	3 oz (85g)	4.8 oz (136g)	2.82 oz (80g)
Dimensions	3.84" x 2.02" x 0.69" (98 x 51 x 17.5 mm)	4.6" x 2.59" x 0.51" (117 x 66 x 13 mm)	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	5.3" x 2.6" x 0.4" (135 x 66 x 10.2 mm)	3.23" x 1.65" x 0.85" (82 x 42 x 21.6 mm)
Form Factor	Clamshell	Slab	Clamshell	Slab	Clamshell
Platform / OS	(proprietary)	Windows Mobile Professional	(proprietary)	Android	(proprietary)
Network Bands	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	WCDMA: 1 CDMA: 850, 1900 GSM: 850, 900, 1800, 1900	GSM: 900, 1800, 1900	4G LTE: 25, 26, 41 CDMA: 800, 850, 1900	GSM: 900, 1800, 1900
Data Technology	HSDPA 3.6	EVDO rA	GPRS	LTE (Cat 3)	GPRS
Features
GPS / Location	Yes	n/a	-	n/a	-
Accessibility
Adjustable Text Size	-	n/a	-	n/a	-
Hearing Aid Compatible	Yes M3, T4 (very tele-coil compatible)	Yes M3, T3 (mostly tele-coil compatible)	-	Yes M3, T4 (very 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	-
Mobile Hotspot	-	n/a	-	n/a	-
USB	Yes Micro-USB	Yes Micro-USB	-	Yes Micro-USB	Yes
Wi-Fi	-	Yes	-	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	Yes	n/a	-	n/a	-
Data & Network
Data Tethering	Yes	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
Stylus	-	Yes	-	-	-
Text Keyboard, Hardware	-	Yes	-	-	-
Touch Screen	-	Yes Resistive	-	Yes Capacitive	-
Memory
Memory Card Slot	Yes	Yes	-	Yes	-
Messaging
Email Client	Yes	n/a	-	n/a	-
EMS / Picture Messaging	-	n/a	Yes	n/a	Yes
Instant Messaging	Yes	n/a	-	n/a	-
MMS	Yes	n/a	Yes	n/a	Yes
Text Messaging Templates	Yes	n/a	Yes	n/a	-
Music
Headphone Jack (3.5mm)	-	Yes	-	Yes	-
Music Player	Yes	n/a	-	n/a	-
Productivity
Alarm	Yes	n/a	Yes	n/a	Yes
Calculator	Yes	n/a	Yes	n/a	Yes
Calendar	Yes	n/a	Yes	n/a	Yes
To-Do List	-	n/a	Yes	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
HD Voice	-	-	-	Yes	-
Headset Jack (2.5 mm)	-	n/a	Yes	n/a	-
Speaker Phone	Yes	Yes	Yes	Yes	-
	ZTE Z331	Samsung Intrepid SPH-i350	Samsung SGH-X640	ZTE Speed	Motorola V878
	X >	< X >	< X >	< X >	< X

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


Phone	ZTE Z331	Samsung Intrepid SPH-i350	Samsung SGH-X640	ZTE Speed	Motorola V878