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Phone	HTC Droid Eris	Ericsson R520	Casio G'zOne Boulder	Samsung Wafer R510	ZTE Engage LT / Engage MT
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	3.2" diag. 5 : 3	?	2" diag. 4 : 3	1.9" diag. 4 : 3	4" diag. 5 : 3
Display Resolution & Type	320 x 480 pixels (~180 ppi) LCD (TFT/TFD)	?	240 x 320 pixels (~200 ppi) LCD (TFT/TFD)	220 x 176 pixels (~148 ppi) LCD (TFT/TFD)	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)
Display Refresh	60 Hz	?	?	?	60 Hz
Battery	1,300 mAh	?	810 mAh	800 mAh	1,900 mAh
Processor	528 MHz MSM7600	?	?	?	?
RAM	?	?	?	?	1 GB
Storage	? raw hardware	? raw hardware	? raw hardware	? raw hardware	4 GB
Main Camera	5 megapixel	-	1 megapixel	1 megapixel	3 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	CIF (352 x 288)	-	?	?	WVGA / 480p
Front Camera	-	-	-	-	Yes
Weight	4.43 oz (126g)	4.23 oz (120g)	4.9 oz (139g)	2.47 oz (70g)	5.09 oz (144g)
Dimensions	4.45" x 2.19" x 0.52" (113 x 55 x 13.2 mm)	5.12" x 1.97" x 0.63" (130 x 50 x 16 mm)	3.9" x 2" x 0.9" (99 x 51 x 22.9 mm)	4.45" x 1.97" x 0.33" (113 x 50 x 8.4 mm)	4.78" x 2.54" x 0.46" (121 x 64 x 11.7 mm)
Form Factor	Slab	Slab	Clamshell	Slab	Slab
Platform / OS	Android	(proprietary)	(proprietary)	(proprietary)	Android
Network Bands	CDMA: 850, 1900	GSM: 900, 1800, 1900	CDMA: 850, 1900	CDMA: 850, 1900	CDMA: 850, 1700, 1900
Data Technology	EVDO rA	GPRS	EVDO rA	EVDO r0	EVDO rA
Features
Flashlight	-	-	Yes	-	-
GPS / Location	n/a	-	Yes	Yes	n/a
Ruggedized	-	-	Yes	-	-
Water-Resistant	-	-	Yes	-	-
Accessibility
Adjustable Text Size	n/a	-	-	-	n/a
Hearing Aid Compatible	Yes M3, T3 (mostly tele-coil compatible)	-	Yes M4, T4 (very tele-coil compatible)	Yes M3, T3 (mostly tele-coil compatible)	-
Multiple Languages	n/a	Yes	Yes	Yes	n/a
TTY/TDD (Digital)	Yes	-	Yes	Yes	Yes
Alerts
Extra Display	-	-	Yes	-	-
Ringer Profiles	-	Yes	-	-	-
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	Yes
Infrared (IR)	-	Yes	-	-	-
USB	Yes Mini-USB	-	Yes	-	Yes Micro-USB
Wi-Fi	Yes 802.11 b,g	-	-	-	Yes
Contacts
Picture ID	n/a	-	Yes	Yes	n/a
Ringer ID	n/a	-	Yes	-	n/a
Voice Dialing	n/a	Yes	Yes	Yes	n/a
Customization
Changeable Body Plates	-	-	Yes	-	-
Custom Graphics	n/a	-	Yes	Yes	n/a
Custom Ringtones	n/a	Yes	Yes	Yes	n/a
Real-Music Ringers	n/a	-	-	-	n/a
Data & Network
Data Tethering	n/a	Yes	Yes	-	n/a
WAP / Web Browser	n/a	Yes	Yes	Yes	n/a
Input
Predictive Text Entry	n/a	Yes	Yes	Yes	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Touch Screen	Yes Capacitive	-	-	-	Yes Capacitive
Memory
Memory Card Slot	Yes	-	Yes	Yes	Yes
Messaging
Email Client	n/a	-	-	-	n/a
EMS / Picture Messaging	n/a	-	Yes	-	n/a
Instant Messaging	n/a	-	-	-	n/a
MMS	n/a	-	Yes	Yes	n/a
Text Messaging Templates	n/a	Yes	Yes	-	n/a
Music
Headphone Jack (3.5mm)	Yes	-	-	-	Yes
Music Player	n/a	-	Yes	Yes	n/a
Stereo Speakers	-	-	-	Yes	-
Productivity
Alarm	n/a	Yes	Yes	Yes	n/a
Calculator	n/a	Yes	Yes	Yes	n/a
Calendar	n/a	Yes	Yes	Yes	n/a
Voice Memo	n/a	Yes	Yes	Yes	n/a
Software
BREW	n/a	-	Yes	Yes	n/a
Games	n/a	Yes	Yes	Yes	n/a
Voice
Push-To-Talk	-	-	Yes	-	-
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	HTC Droid Eris	Ericsson R520	Casio G'zOne Boulder	Samsung Wafer R510	ZTE Engage LT / Engage MT
	X >	< X >	< X >	< X >	< X

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


Phone	HTC Droid Eris	Ericsson R520	Casio G'zOne Boulder	Samsung Wafer R510	ZTE Engage LT / Engage MT