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Phone	Samsung SGH-X640	Samsung SCH-A990	HTC Droid Eris	ZTE Engage LT / Engage MT	UTStarcom PPC-6700 / XV-6700 / HTC Apache
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	?	3.2" diag. 5 : 3	4" diag. 5 : 3	?
Display Resolution & Type	128 x 160 pixels LCD (TFT/TFD)	240 x 320 pixels LCD (TFT/TFD)	320 x 480 pixels (~180 ppi) LCD (TFT/TFD)	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	240 x 320 pixels LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	60 Hz	?
Battery	800 mAh	1,000 mAh	1,300 mAh	1,900 mAh	1,350 mAh
Processor	?	?	528 MHz MSM7600	?	416 MHz Intel
RAM	?	?	?	1 GB	?
Storage	? raw hardware	? raw hardware	? raw hardware	4 GB	? raw hardware
Main Camera	Yes	3 megapixel	5 megapixel	3 megapixel	1 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	?	CIF (352 x 288)	WVGA / 480p	?
Front Camera	-	-	-	Yes	-
Weight	3 oz (85g)	4.4 oz (125g)	4.43 oz (126g)	5.09 oz (144g)	6.07 oz (172g)
Dimensions	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	3.8" x 1.88" x 0.82" (97 x 48 x 20.8 mm)	4.45" x 2.19" x 0.52" (113 x 55 x 13.2 mm)	4.78" x 2.54" x 0.46" (121 x 64 x 11.7 mm)	4.25" x 2.32" x 0.93" (108 x 59 x 23.6 mm)
Form Factor	Clamshell	Clamshell	Slab	Slab	Slide
Platform / OS	(proprietary)	(proprietary)	Android	Android	Windows Mobile Professional
Network Bands	GSM: 900, 1800, 1900	CDMA: 850, 1900	CDMA: 850, 1900	CDMA: 850, 1700, 1900	CDMA: 850, 1900
Data Technology	GPRS	EVDO r0	EVDO rA	EVDO rA	EVDO r0
Features
Flashlight	-	Yes	-	-	-
GPS / Location	-	Yes	n/a	n/a	n/a
Accessibility
Adjustable Text Size	-	-	n/a	n/a	n/a
Hearing Aid Compatible	-	Yes M3 (mostly compatible)	Yes M3, T3 (mostly tele-coil compatible)	-	-
Multiple Languages	Yes	Yes	n/a	n/a	n/a
TTY/TDD (Digital)	-	Yes	Yes	Yes	Yes
Alerts
Extra Display	-	Yes	-	-	-
Connectivity
Bluetooth	-	Yes	Yes	Yes	Yes
Infrared (IR)	-	-	-	-	Yes
USB	-	Yes	Yes Mini-USB	Yes Micro-USB	Yes Mini-USB
Wi-Fi	-	-	Yes 802.11 b,g	Yes	Yes
Contacts
Picture ID	Yes	Yes	n/a	n/a	n/a
Ringer ID	Yes	Yes	n/a	n/a	n/a
Voice Dialing	-	Yes	n/a	n/a	n/a
Customization
Custom Graphics	Yes	Yes	n/a	n/a	n/a
Custom Ringtones	Yes	Yes	n/a	n/a	n/a
Real-Music Ringers	-	Yes	n/a	n/a	n/a
Data & Network
Data Tethering	-	Yes	n/a	n/a	n/a
WAP / Web Browser	Yes	Yes	n/a	n/a	n/a
Input
Predictive Text Entry	Yes	Yes	n/a	n/a	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	-	-	-	Yes
Touch Screen	-	-	Yes Capacitive	Yes Capacitive	Yes
Memory
Memory Card Slot	-	Yes	Yes	Yes	Yes
Messaging
Email Client	-	-	n/a	n/a	n/a
EMS / Picture Messaging	Yes	Yes	n/a	n/a	n/a
Instant Messaging	-	-	n/a	n/a	n/a
MMS	Yes	Yes	n/a	n/a	n/a
Text Messaging Templates	Yes	Yes	n/a	n/a	n/a
Music
Headphone Jack (3.5mm)	-	-	Yes	Yes	-
Music Player	-	Yes	n/a	n/a	n/a
Stereo Speakers	-	Yes	-	-	-
Photo & Video
TV Output	-	Yes	-	-	-
Productivity
Alarm	Yes	Yes	n/a	n/a	n/a
Calculator	Yes	Yes	n/a	n/a	n/a
Calendar	Yes	Yes	n/a	n/a	n/a
To-Do List	Yes	-	n/a	n/a	n/a
Voice Memo	Yes	Yes	n/a	n/a	n/a
Software
BREW	-	Yes	n/a	n/a	n/a
Games	Yes	Yes	n/a	n/a	n/a
Java (J2ME)	Yes	-	n/a	n/a	n/a
Voice
Headset Jack (2.5 mm)	Yes	-	n/a	n/a	n/a
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Samsung SGH-X640	Samsung SCH-A990	HTC Droid Eris	ZTE Engage LT / Engage MT	UTStarcom PPC-6700 / XV-6700 / HTC Apache
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung SGH-X640	Samsung SCH-A990	HTC Droid Eris	ZTE Engage LT / Engage MT	UTStarcom PPC-6700 / XV-6700 / HTC Apache