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Specifications
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Phone	Samsung DoubleTime	HTC Droid Eris	Motorola V551 / V330 / V547 / V555 / V557	BlackBerry 7750	HTC MDA Compact / xda II mini / JAM (Magician)
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	3.2" diag. 5 : 3	3.2" diag. 5 : 3	?	?	?
Display Resolution & Type	320 x 480 pixels (~180 ppi) LCD (TFT/TFD)	320 x 480 pixels (~180 ppi) LCD (TFT/TFD)	176 x 220 pixels LCD (TFT/TFD)	240 x 240 pixels LCD (Color)	240 x 320 pixels LCD (TFT/TFD)
Display Refresh	60 Hz	60 Hz	?	?	?
Battery	1,200 mAh	1,300 mAh	820 mAh	?	1,200 mAh
Processor	600 MHz Qualcomm	528 MHz MSM7600	?	?	416 MHz Intel xScale
RAM	?	?	?	?	?
Storage	? raw hardware	? raw hardware	? raw hardware	? raw hardware	? raw hardware
Main Camera	3 megapixel	5 megapixel	Yes	-	1 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	QVGA (320 x 240)	CIF (352 x 288)	?	-	?
Front Camera	-	-	-	-	-
Weight	5.22 oz (148g)	4.43 oz (126g)	4.23 oz (120g)	5.01 oz (142g)	5.29 oz (150g)
Dimensions	4.45" x 2.44" x 0.59" (113 x 62 x 15 mm)	4.45" x 2.19" x 0.52" (113 x 55 x 13.2 mm)	3.5" x 1.93" x 0.97" (89 x 49 x 24.6 mm)	4.76" x 3.03" x 0.71" (121 x 77 x 18 mm)	4.25" x 2.28" x 0.72" (108 x 58 x 18.3 mm)
Form Factor	Clamshell	Slab	Clamshell	Slab	Slab
Platform / OS	Android	Android	(proprietary)	BlackBerry OS	Windows Mobile Professional
Network Bands	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900	GSM: 850, 900, 1800, 1900 *	CDMA: 850, 1900	GSM: 850, 1800, 1900 *
Data Technology	HSPA 7.2	EVDO rA	EDGE	1xRTT	GPRS
Features
GPS / Location	n/a	n/a	-	n/a	n/a
Accessibility
Hearing Aid Compatible	Yes M3, T3 (mostly tele-coil compatible)	Yes M3, T3 (mostly tele-coil compatible)	-	-	-
Multiple Languages	n/a	n/a	Yes	n/a	n/a
TTY/TDD (Digital)	Yes	Yes	Yes	Yes	-
Alerts
Extra Display	-	-	Yes	-	-
Ringer Profiles	-	-	Yes	Yes	-
Connectivity
Bluetooth	Yes	Yes	Yes	-	Yes
Infrared (IR)	-	-	-	-	Yes
Mobile Hotspot	n/a	n/a	-	n/a	n/a
USB	Yes Micro-USB	Yes Mini-USB	Yes	Yes	Yes Mini-USB
Wi-Fi	Yes 4 (802.11 b,g,n)	Yes 802.11 b,g	-	-	-
Contacts
Picture ID	n/a	n/a	Yes	n/a	n/a
Ringer ID	n/a	n/a	Yes	n/a	n/a
Voice Dialing	n/a	n/a	Yes	n/a	n/a
Customization
Custom Graphics	n/a	n/a	Yes	n/a	n/a
Custom Ringtones	n/a	n/a	Yes	n/a	n/a
Real-Music Ringers	n/a	n/a	Yes	n/a	n/a
Data & Network
Data Tethering	n/a	n/a	Yes	n/a	n/a
WAP / Web Browser	n/a	n/a	Yes	n/a	n/a
Input
Predictive Text Entry	n/a	n/a	Yes	n/a	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	Yes	-	-	Yes	-
Touch Screen	Yes Capacitive	Yes Capacitive	-	-	Yes
Memory
Memory Card Slot	Yes	Yes	-	-	Yes
Messaging
Email Client	n/a	n/a	Yes	n/a	n/a
EMS / Picture Messaging	n/a	n/a	Yes	n/a	n/a
Instant Messaging	n/a	n/a	Yes	n/a	n/a
MMS	n/a	n/a	Yes	n/a	n/a
Text Messaging Templates	n/a	n/a	Yes	n/a	n/a
Music
Headphone Jack (3.5mm)	Yes	Yes	-	-	-
Music Player	n/a	n/a	-	n/a	n/a
Productivity
Alarm	n/a	n/a	Yes	n/a	n/a
Calculator	n/a	n/a	Yes	n/a	n/a
Calendar	n/a	n/a	Yes	n/a	n/a
To-Do List	n/a	n/a	-	n/a	n/a
Voice Memo	n/a	n/a	Yes	n/a	n/a
Software
Games	n/a	n/a	Yes	n/a	n/a
Java (J2ME)	n/a	n/a	Yes	n/a	n/a
Voice
Headset Jack (2.5 mm)	n/a	n/a	Yes	n/a	n/a
Speaker Phone	Yes	Yes	Yes	-	Yes
	Samsung DoubleTime	HTC Droid Eris	Motorola V551 / V330 / V547 / V555 / V557	BlackBerry 7750	HTC MDA Compact / xda II mini / JAM (Magician)
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung DoubleTime	HTC Droid Eris	Motorola V551 / V330 / V547 / V555 / V557	BlackBerry 7750	HTC MDA Compact / xda II mini / JAM (Magician)