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Phone	ZTE Prelude / Avail 2	UTStarcom PPC-6700 / XV-6700 / HTC Apache	Samsung SCH-A990	Sony Ericsson Z550a	Samsung Vibrant (Galaxy S)
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	3.5" diag. 5 : 3	?	?	1.9" diag. 4 : 3	4" diag. 5 : 3
Display Resolution & Type	320 x 480 pixels (~165 ppi) LCD (TFT/TFD)	240 x 320 pixels LCD (TFT/TFD)	240 x 320 pixels LCD (TFT/TFD)	176 x 220 pixels (~148 ppi) LCD (TFT/TFD)	480 x 800 pixels (~233 ppi) AMOLED
Display Refresh	60 Hz	?	?	?	60 Hz
Battery	1,500 mAh	1,350 mAh	1,000 mAh	?	1,500 mAh
Processor	1 GHz Qualcomm Snapdragon MSM7225A	416 MHz Intel	?	?	1 GHz Samsung Hummingbird Cortex A8
RAM	512 MB	?	?	?	?
Storage	4 GB	? raw hardware	? raw hardware	? raw hardware	16 GB
Main Camera	2 megapixel	1 megapixel	3 megapixel	1 megapixel	5 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	VGA (640 x 480)	?	?	?	720p HD
Front Camera	-	-	-	-	-
Weight	4.4 oz (125g)	6.07 oz (172g)	4.4 oz (125g)	3.26 oz (92g)	4.16 oz (118g)
Dimensions	4.6" x 2.44" x 0.45" (117 x 62 x 11.4 mm)	4.25" x 2.32" x 0.93" (108 x 59 x 23.6 mm)	3.8" x 1.88" x 0.82" (97 x 48 x 20.8 mm)	3.43" x 1.77" x 0.79" (87 x 45 x 20.1 mm)	4.82" x 2.54" x 0.39" (122 x 65 x 9.9 mm)
Form Factor	Slab	Slide	Clamshell	Clamshell	Slab
Platform / OS	Android	Windows Mobile Professional	(proprietary)	(proprietary)	Android
Network Bands	WCDMA: 2, 5 GSM: 850, 1900	CDMA: 850, 1900	CDMA: 850, 1900	GSM: 850, 900, 1800, 1900 *	WCDMA: 1, 4 GSM: 850, 900, 1800, 1900
Data Technology	HSPA 7.2	EVDO r0	EVDO r0	GPRS	HSPA 7.2
Features
Flashlight	-	-	Yes	-	-
GPS / Location	n/a	n/a	Yes	-	n/a
Accessibility
Adjustable Text Size	n/a	n/a	-	-	n/a
Hearing Aid Compatible	Yes M3, T4 (very tele-coil compatible)	-	Yes M3 (mostly compatible)	-	Yes M3, T3 (mostly tele-coil compatible)
Multiple Languages	n/a	n/a	Yes	Yes	n/a
TTY/TDD (Digital)	Yes	Yes	Yes	Yes	-
Alerts
Extra Display	-	-	Yes	Yes	-
Ringer Profiles	-	-	-	Yes	-
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	Yes
Infrared (IR)	-	Yes	-	-	-
Mobile Hotspot	n/a	n/a	-	-	n/a
USB	Yes	Yes Mini-USB	Yes	Yes	Yes Micro-USB
Wi-Fi	Yes 4 (802.11 b,g,n)	Yes	-	-	Yes
Contacts
Picture ID	n/a	n/a	Yes	Yes	n/a
Ringer ID	n/a	n/a	Yes	Yes	n/a
Voice Dialing	n/a	n/a	Yes	Yes	n/a
Customization
Custom Graphics	n/a	n/a	Yes	Yes	n/a
Custom Ringtones	n/a	n/a	Yes	Yes	n/a
Real-Music Ringers	n/a	n/a	Yes	Yes	n/a
Data & Network
Data Tethering	n/a	n/a	Yes	Yes	n/a
WAP / Web Browser	n/a	n/a	Yes	Yes	n/a
Input
Predictive Text Entry	n/a	n/a	Yes	Yes	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	Yes	-	-	-
Touch Screen	Yes Capacitive	Yes	-	-	Yes Capacitive
Memory
Memory Card Slot	Yes	Yes	Yes	Yes	Yes
Messaging
Email Client	n/a	n/a	-	Yes	n/a
EMS / Picture Messaging	n/a	n/a	Yes	-	n/a
Instant Messaging	n/a	n/a	-	-	n/a
MMS	n/a	n/a	Yes	Yes	n/a
Text Messaging Templates	n/a	n/a	Yes	Yes	n/a
Music
FM Radio	-	-	-	Yes	-
Headphone Jack (3.5mm)	Yes	-	-	-	Yes
Music Player	n/a	n/a	Yes	Yes	n/a
Stereo Speakers	-	-	Yes	-	-
Photo & Video
DLNA	-	-	-	-	Yes
TV Output	-	-	Yes	-	-
Productivity
Alarm	n/a	n/a	Yes	Yes	n/a
Calculator	n/a	n/a	Yes	Yes	n/a
Calendar	n/a	n/a	Yes	Yes	n/a
To-Do List	n/a	n/a	-	Yes	n/a
Voice Memo	n/a	n/a	Yes	Yes	n/a
Software
BREW	n/a	n/a	Yes	-	n/a
Games	n/a	n/a	Yes	Yes	n/a
Java (J2ME)	n/a	n/a	-	Yes	n/a
Voice
Headset Jack (2.5 mm)	n/a	n/a	-	-	n/a
Push-To-Talk	-	-	-	Yes *	-
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	ZTE Prelude / Avail 2	UTStarcom PPC-6700 / XV-6700 / HTC Apache	Samsung SCH-A990	Sony Ericsson Z550a	Samsung Vibrant (Galaxy S)
	X >	< X >	< X >	< X >	< X

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


Phone	ZTE Prelude / Avail 2	UTStarcom PPC-6700 / XV-6700 / HTC Apache	Samsung SCH-A990	Sony Ericsson Z550a	Samsung Vibrant (Galaxy S)