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Phone	Pantech Duo C810	Samsung Zeal / Alias 2 SCH-U750	Siemens CT66 / C66 / C65 / C71 / C70	Samsung SCH-A990	Sony Xperia ion
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	2.2" diag. 4 : 3	2.6" diag. 4 : 3	?	?	4.6" diag. 16 : 9
Display Resolution & Type	240 x 320 pixels (~182 ppi) LCD (TFT/TFD)	240 x 320 pixels (~154 ppi) LCD (TFT/TFD)	130 x 130 pixels LCD (Color)	240 x 320 pixels LCD (TFT/TFD)	720 x 1280 pixels (~323 ppi) LCD (TFT/TFD)
Display Refresh	?	?	?	?	60 Hz
Battery	1,320 mAh	880 mAh	600 mAh	1,000 mAh	1,900 mAh
Processor	ARM 920t PXA27x	?	?	?	1.5 GHz Qualcomm Snapdragon S3 MSM8260
RAM	?	?	?	?	1 GB
Storage	? raw hardware	? raw hardware	? raw hardware	? raw hardware	16 GB
Main Camera	1 megapixel	2 megapixel	Yes	3 megapixel	12 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	QVGA (320 x 240)	QCIF (176 x 144)	-	?	1080p HD
Front Camera	-	-	-	-	1 megapixel
Weight	3.88 oz (110g)	4.34 oz (123g)	3 oz (85g)	4.4 oz (125g)	5.1 oz (145g)
Dimensions	4.01" x 1.97" x 0.78" (102 x 50 x 19.8 mm)	4.01" x 2.04" x 0.67" (102 x 52 x 17 mm)	4.1" x 1.8" x 0.7" (104 x 46 x 17.8 mm)	3.8" x 1.88" x 0.82" (97 x 48 x 20.8 mm)	5.2" x 2.7" x 0.4" (132 x 69 x 10.2 mm)
Form Factor	Slide	Clamshell	Slab	Clamshell	Slab
Platform / OS	Windows Mobile Standard	(proprietary)	(proprietary)	(proprietary)	Android
Network Bands	WCDMA: 2, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900	GSM: 850, 1800, 1900 *	CDMA: 850, 1900	4G LTE: 4, 17 WCDMA: 1, 2, 4, 5 GSM: 850, 900, 1800, 1900
Data Technology	HSDPA 1.8	EVDO r0	GPRS	EVDO r0	LTE (Cat 3)
Features
Flashlight	-	-	-	Yes	-
GPS / Location	n/a	Yes	-	Yes	n/a
Accessibility
Adjustable Text Size	n/a	Yes	-	-	n/a
Hearing Aid Compatible	-	Yes M4 (very compatible)	-	Yes M3 (mostly compatible)	Yes M3, T3 (mostly tele-coil compatible)
Multiple Languages	n/a	Yes	Yes	Yes	n/a
TTY/TDD (Digital)	-	Yes	-	Yes	-
Alerts
Extra Display	-	Yes	-	Yes	-
Ringer Profiles	Yes	-	Yes	-	-
Connectivity
Bluetooth	Yes	Yes	-	Yes	Yes
Infrared (IR)	-	-	Yes	-	-
Mobile Hotspot	n/a	-	-	-	n/a
USB	Yes	Yes	Yes	Yes	Yes
Wi-Fi	-	-	-	-	Yes
Contacts
Picture ID	n/a	Yes	Yes	Yes	n/a
Ringer ID	n/a	Yes	Yes	Yes	n/a
Voice Dialing	n/a	Yes	-	Yes	n/a
Customization
Changeable Body Plates	-	-	Yes	-	-
Custom Graphics	n/a	Yes	Yes	Yes	n/a
Custom Ringtones	n/a	Yes	Yes	Yes	n/a
Real-Music Ringers	n/a	Yes	-	Yes	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
Text Keyboard, Hardware	Yes	Yes	-	-	-
Touch Screen	-	-	-	-	Yes Capacitive
Memory
Memory Card Slot	Yes	Yes	-	Yes	Yes
Messaging
Email Client	n/a	Yes	-	-	n/a
EMS / Picture Messaging	n/a	-	Yes	Yes	n/a
Instant Messaging	n/a	Yes	-	-	n/a
MMS	n/a	Yes	Yes	Yes	n/a
Text Messaging Templates	n/a	Yes	Yes	Yes	n/a
Music
FM Radio	-	-	-	-	Yes
Headphone Jack (3.5mm)	-	-	-	-	Yes
Music Player	n/a	Yes	-	Yes	n/a
Stereo Speakers	-	-	-	Yes	-
Photo & Video
DLNA	-	-	-	-	Yes
TV Output	-	-	-	Yes	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
To-Do List	n/a	-	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
Java (J2ME)	n/a	-	Yes	-	n/a
Voice
Call Screening	-	-	Yes	-	-
Headset Jack (2.5 mm)	n/a	Yes	-	-	n/a
Push-To-Talk	-	-	Yes *	-	-
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Pantech Duo C810	Samsung Zeal / Alias 2 SCH-U750	Siemens CT66 / C66 / C65 / C71 / C70	Samsung SCH-A990	Sony Xperia ion
	X >	< X >	< X >	< X >	< X

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


Phone	Pantech Duo C810	Samsung Zeal / Alias 2 SCH-U750	Siemens CT66 / C66 / C65 / C71 / C70	Samsung SCH-A990	Sony Xperia ion