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Phone	Pantech Duo C810	Samsung SCH-A310	Siemens SX66 / MDA III / PDA2K (HTC Blue Angel)	Ericsson R278d	Samsung Sidekick 4G
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	2.2" diag. 4 : 3	?	?	?	3.5" diag. 5 : 3
Display Resolution & Type	240 x 320 pixels (~182 ppi) LCD (TFT/TFD)	128 x 128 pixels LCD (Grayscale)	240 x 320 pixels LCD (TFT/TFD)	101 x 40 pixels	480 x 800 pixels (~267 ppi) LCD (TFT/TFD)
Display Refresh	?	?	?	?	60 Hz
Battery	1,320 mAh	?	1,490 mAh	?	?
Processor	ARM 920t PXA27x	?	400 MHz Intel XScale	?	1 GHz Samsung Hummingbird Cortex A8
RAM	?	?	?	?	?
Storage	? raw hardware	? raw hardware	? raw hardware	? raw hardware	? raw hardware
Main Camera	1 megapixel	-	Yes	-	3 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	QVGA (320 x 240)	-	QCIF (176 x 144)	-	WVGA / 480p
Front Camera	-	-	-	-	Yes
Weight	3.88 oz (110g)	3.2 oz (91g)	7.41 oz (210g)	9.28 oz (263g)	5.7 oz (162g)
Dimensions	4.01" x 1.97" x 0.78" (102 x 50 x 19.8 mm)	3.43" x 1.89" x 0.87" (87 x 48 x 22.1 mm)	4.92" x 2.83" x 0.75" (125 x 72 x 19.1 mm)	5.1" x 2" x 1" (130 x 51 x 25.4 mm)	5" x 2.42" x 0.6" (127 x 61 x 15.2 mm)
Form Factor	Slide	Clamshell	Slide	Slab	Slide
Platform / OS	Windows Mobile Standard	(proprietary)	Windows Mobile Professional	(proprietary)	Android
Network Bands	WCDMA: 2, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900 AMPS: 850	GSM: 850, 900, 1800, 1900	TDMA: 850, 1900 AMPS: 850	WCDMA: 1, 4 GSM: 850, 900, 1800, 1900
Data Technology	HSDPA 1.8	1xRTT	GPRS	-	HSPA+ 21
Features
GPS / Location	n/a	Yes	n/a	-	n/a
Accessibility
Hearing Aid Compatible	-	-	-	-	Yes M3, T3 (mostly tele-coil compatible)
Multiple Languages	n/a	Yes	n/a	Yes	n/a
TTY/TDD (Digital)	-	-	-	-	Yes
Alerts
Extra Display	-	Yes	-	-	-
Ringer Profiles	Yes	-	-	Yes	-
Connectivity
Bluetooth	Yes	-	Yes	-	Yes
Infrared (IR)	-	-	Yes	-	-
Mobile Hotspot	n/a	-	n/a	-	n/a
USB	Yes	Yes	Yes	-	Yes Micro-USB
Wi-Fi	-	-	Yes	-	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	n/a	-	n/a	-	n/a
Ringer ID	n/a	-	n/a	-	n/a
Voice Dialing	n/a	Yes	n/a	-	n/a
Customization
Changeable Body Plates	-	Yes	-	-	-
Custom Graphics	n/a	-	n/a	-	n/a
Custom Ringtones	n/a	-	n/a	Yes	n/a
Real-Music Ringers	n/a	-	n/a	-	n/a
Data & Network
Data Tethering	n/a	Yes	n/a	Yes	n/a
WAP / Web Browser	n/a	Yes	n/a	Yes	n/a
Input
Predictive Text Entry	n/a	Yes	n/a	Yes	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	Yes	-	Yes	-	Yes
Touch Screen	-	-	Yes	-	Yes
Memory
Memory Card Slot	Yes	-	Yes	-	Yes
Messaging
Email Client	n/a	-	n/a	-	n/a
Instant Messaging	n/a	-	n/a	-	n/a
MMS	n/a	-	n/a	-	n/a
Text Messaging Templates	n/a	-	n/a	-	n/a
Music
Headphone Jack (3.5mm)	-	-	-	-	Yes
Music Player	n/a	-	n/a	-	n/a
Photo & Video
DLNA	-	-	-	-	Yes
Productivity
Alarm	n/a	-	n/a	Yes	n/a
Calculator	n/a	-	n/a	-	n/a
Calendar	n/a	Yes	n/a	-	n/a
To-Do List	n/a	-	n/a	-	n/a
Voice Memo	n/a	Yes	n/a	-	n/a
Software
Games	n/a	Yes	n/a	-	n/a
Java (J2ME)	n/a	-	n/a	-	n/a
Voice
Headset Jack (2.5 mm)	n/a	Yes	n/a	-	n/a
Speaker Phone	Yes	-	Yes	-	Yes
	* Some versions only
	Pantech Duo C810	Samsung SCH-A310	Siemens SX66 / MDA III / PDA2K (HTC Blue Angel)	Ericsson R278d	Samsung Sidekick 4G
	X >	< X >	< X >	< X >	< X

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


Phone	Pantech Duo C810	Samsung SCH-A310	Siemens SX66 / MDA III / PDA2K (HTC Blue Angel)	Ericsson R278d	Samsung Sidekick 4G