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Phone	Pantech Duo C810	ZTE Grand X 3	Siemens SL65	Nokia E66	Palm Treo 600 (CDMA)
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	2.2" diag. 4 : 3	5.5" diag. 16 : 9	?	2.4" diag. 4 : 3	?
Display Resolution & Type	240 x 320 pixels (~182 ppi) LCD (TFT/TFD)	720 x 1280 pixels (~267 ppi) LCD (TFT/TFD)	130 x 130 pixels LCD (TFT/TFD)	240 x 320 pixels (~167 ppi) LCD (TFT/TFD)	160 x 160 pixels LCD (Color)
Display Refresh	?	60 Hz	?	?	?
Battery	1,320 mAh	3,080 mAh	700 mAh	1,000 mAh	?
Processor	ARM 920t PXA27x	1.3 GHz Qualcomm Snapdragon 210 (MSM8909)	?	?	?
RAM	?	2 GB	?	?	?
Storage	? raw hardware	16 GB	? raw hardware	? raw hardware	? raw hardware
Main Camera	1 megapixel	8 megapixel	-	3 megapixel	Yes
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	QVGA (320 x 240)	720p HD	?	QVGA (320 x 240)	-
Front Camera	-	2 megapixel	-	-	-
Weight	3.88 oz (110g)	6 oz (170g)	3.49 oz (99g)	4.27 oz (121g)	6.2 oz (176g)
Dimensions	4.01" x 1.97" x 0.78" (102 x 50 x 19.8 mm)	6.07" x 2.99" x 0.37" (154 x 76 x 9.4 mm)	3.55" x 1.87" x 0.82" (90 x 47 x 20.8 mm)	4.21" x 1.93" x 0.51" (107 x 49 x 13 mm)	4.41" x 2.36" x 0.87" (112 x 60 x 22.1 mm)
Form Factor	Slide	Slab	Slide	Slide	Slab
Platform / OS	Windows Mobile Standard	Android	(proprietary)	S60 (Symbian)	Palm OS
Network Bands	WCDMA: 2, 5 GSM: 850, 900, 1800, 1900	4G LTE: 2, 4, 5, 12 WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	GSM: 900, 1800, 1900	WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 *	CDMA: 850, 1900
Data Technology	HSDPA 1.8	LTE (Cat 4)	GPRS	HSDPA 3.6	1xRTT
Features
Flashlight	-	Yes	-	-	-
GPS / Location	n/a	n/a	-	n/a	n/a
Accessibility
Hearing Aid Compatible	-	Yes M4, T3 (mostly tele-coil compatible)	-	-	-
Multiple Languages	n/a	n/a	Yes	n/a	n/a
TTY/TDD (Digital)	-	Yes	-	-	Yes
Alerts
Ringer Profiles	Yes	-	Yes	Yes	-
Connectivity
Bluetooth	Yes	Yes	-	Yes	-
Infrared (IR)	-	-	Yes	Yes	Yes
USB	Yes	Yes USB Type C	Yes	Yes Micro-USB	Yes
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	-	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	-	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
Memory
Memory Card Slot	Yes	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	-	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
FM Radio	-	-	-	Yes	-
Headphone Jack (3.5mm)	-	Yes	-	-	-
Music Player	n/a	n/a	-	n/a	n/a
Photo & Video
Video Calling	n/a	n/a	-	n/a	n/a
Power
Fast Charging	-	Yes	-	-	-
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	Yes	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
HD Voice	-	Yes	-	-	-
Headset Jack (2.5 mm)	n/a	n/a	-	n/a	n/a
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Pantech Duo C810	ZTE Grand X 3	Siemens SL65	Nokia E66	Palm Treo 600 (CDMA)
	X >	< X >	< X >	< X >	< X

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


Phone	Pantech Duo C810	ZTE Grand X 3	Siemens SL65	Nokia E66	Palm Treo 600 (CDMA)