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Phone	Samsung MM-A900 / SPH-A900 / Ace	Motorola V551 / V330 / V547 / V555 / V557	HTC Hero (CDMA)	Motorola Droid 2	Motorola Defy (2010)
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	?	3.2" diag. 5 : 3	3.7" diag. 16 : 9	3.6" diag. 16 : 9
Display Resolution & Type	240 x 320 pixels LCD (TFT/TFD)	176 x 220 pixels LCD (TFT/TFD)	320 x 480 pixels (~180 ppi) LCD (TFT/TFD)	480 x 854 pixels (~265 ppi) LCD (TFT/TFD)	480 x 854 pixels (~272 ppi) LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	60 Hz	60 Hz
Battery	?	820 mAh	1,500 mAh	1,390 mAh	1,540 mAh
Processor	?	?	528 MHz MSM7600	1 GHz TI OMAP3620	800 MHz TI OMAP3610
RAM	?	?	?	?	?
Storage	? raw hardware	? raw hardware	? raw hardware	8 GB	? raw hardware
Main Camera	1 megapixel	Yes	5 megapixel	5 megapixel	5 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	?	?	QVGA (320 x 240)	WVGA / 480p	?
Front Camera	-	-	-	-	-
Weight	3.9 oz (111g)	4.23 oz (120g)	4.5 oz (128g)	5.96 oz (169g)	4.16 oz (118g)
Dimensions	3.86" x 2.01" x 0.57" (98 x 51 x 14.5 mm)	3.5" x 1.93" x 0.97" (89 x 49 x 24.6 mm)	4.46" x 2.22" x 0.54" (113 x 56 x 13.7 mm)	4.58" x 2.38" x 0.54" (116 x 61 x 13.7 mm)	4.21" x 2.32" x 0.53" (107 x 59 x 13.4 mm)
Form Factor	Clamshell	Clamshell	Slab	Slide	Slab
Platform / OS	(proprietary)	(proprietary)	Android	Android	Android
Network Bands	CDMA: 850, 1900	GSM: 850, 900, 1800, 1900 *	CDMA: 850, 1900	CDMA: 850, 1900	WCDMA: 1, 4, 5 GSM: 850, 900, 1800, 1900
Data Technology	EVDO r0	EDGE	EVDO rA	EVDO rA	HSPA 7.2
Features
GPS / Location	Yes	-	n/a	n/a	n/a
Ruggedized	-	-	-	-	Yes
Accessibility
Hearing Aid Compatible	-	-	Yes M3, T3 (mostly tele-coil 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	Yes
Alerts
Extra Display	Yes	Yes	-	-	-
Ringer Profiles	-	Yes	-	-	-
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	Yes
Mobile Hotspot	-	-	n/a	n/a	n/a
USB	Yes	Yes	Yes Mini-USB	Yes Micro-USB	Yes Micro-USB
Wi-Fi	-	-	Yes 802.11 b,g	Yes 4 (802.11 b,g,n)	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	Yes	Yes	n/a	n/a	n/a
Ringer ID	Yes	Yes	n/a	n/a	n/a
Voice Dialing	Yes	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	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 Capacitive
Memory
Memory Card Slot	-	-	Yes	Yes	Yes
Messaging
Email Client	-	Yes	n/a	n/a	n/a
EMS / Picture Messaging	-	Yes	n/a	n/a	n/a
Instant Messaging	-	Yes	n/a	n/a	n/a
MMS	-	Yes	n/a	n/a	n/a
Text Messaging Templates	Yes	Yes	n/a	n/a	n/a
Music
FM Radio	-	-	-	-	Yes
Headphone Jack (3.5mm)	-	-	Yes	Yes	Yes
Music Player	Yes	-	n/a	n/a	n/a
Photo & Video
DLNA	-	-	-	Yes	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
Games	Yes	Yes	n/a	n/a	n/a
Java (J2ME)	Yes	Yes	n/a	n/a	n/a
Voice
Headset Jack (2.5 mm)	Yes	Yes	n/a	n/a	n/a
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	Samsung MM-A900 / SPH-A900 / Ace	Motorola V551 / V330 / V547 / V555 / V557	HTC Hero (CDMA)	Motorola Droid 2	Motorola Defy (2010)
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NOTE: Differences are highlighted with bold / black text for visual clarity only.


Phone	Samsung MM-A900 / SPH-A900 / Ace	Motorola V551 / V330 / V547 / V555 / V557	HTC Hero (CDMA)	Motorola Droid 2	Motorola Defy (2010)