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Phone	Nokia Lumia 810	Siemens CT66 / C66 / C65 / C71 / C70	Huawei Valiant	Palm Treo 800w	Samsung SGH-A717
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	4.3" diag. 5 : 3	?	4" diag. 5 : 3	?	?
Display Resolution & Type	480 x 800 pixels (~217 ppi) AMOLED	130 x 130 pixels LCD (Color)	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	320 x 320 pixels LCD (TFT/TFD)	240 x 320 pixels LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	?	?
Battery	1,800 mAh	600 mAh	1,750 mAh	1,150 mAh	?
Processor	1.5 GHz Qualcomm Snapdragon	?	1 GHz Qualcomm Snapdragon S4 Play MSM8225	?	?
RAM	1 GB	?	768 MB	?	?
Storage	8 GB	? raw hardware	4 GB	? raw hardware	? raw hardware
Main Camera	8 megapixel	Yes	3 megapixel	2 megapixel	2 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	1080p HD	-	WVGA / 480p	QVGA (320 x 240)	QCIF (176 x 144)
Front Camera	1 megapixel	-	-	-	-
Weight	5.11 oz (145g)	3 oz (85g)	4.94 oz (140g)	5 oz (142g)	3.31 oz (94g)
Dimensions	5" x 2.69" x 0.44" (127 x 68 x 11.2 mm)	4.1" x 1.8" x 0.7" (104 x 46 x 17.8 mm)	4.96" x 2.52" x 0.45" (126 x 64 x 11.4 mm)	4.4" x 2.3" x 0.7" (112 x 58 x 17.8 mm)	4.07" x 2.15" x 0.55" (103 x 55 x 14 mm)
Form Factor	Slab	Slab	Slab	Slab	Clamshell
Platform / OS	Windows	(proprietary)	Android	Windows Mobile Professional	(proprietary)
Network Bands	WCDMA: 1, 2, 4, 5 GSM: 850, 900, 1800, 1900	GSM: 850, 1800, 1900 *	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900	WCDMA: 2, 5 GSM: 850, 900, 1800, 1900
Data Technology	HSPA+ 42	GPRS	HSPA 7.2	EVDO rA	HSDPA 1.8
Features
GPS / Location	n/a	-	n/a	n/a	-
Accessibility
Adjustable Text Size	n/a	-	n/a	n/a	-
Hearing Aid Compatible	Yes M3, T4 (very tele-coil compatible)	-	Yes M3, T3 (mostly tele-coil compatible)	Yes M4, T4 (very tele-coil compatible)	Yes M3 (mostly compatible)
Multiple Languages	n/a	Yes	n/a	n/a	Yes
TTY/TDD (Digital)	Yes	-	Yes	Yes	Yes
Alerts
Extra Display	-	-	-	-	Yes
Ringer Profiles	-	Yes	-	-	Yes
Connectivity
Bluetooth	Yes	-	Yes	Yes	Yes
Infrared (IR)	-	Yes	-	Yes	-
Mobile Hotspot	n/a	-	n/a	n/a	-
NFC	Yes	-	-	-	-
USB	Yes Micro-USB	Yes	Yes Micro-USB	Yes Micro-USB	Yes
Wi-Fi	Yes 4 (802.11 a,b,g,n)	-	Yes 4 (802.11 b,g,n)	Yes 802.11 b,g	-
Contacts
Picture ID	n/a	Yes	n/a	n/a	Yes
Ringer ID	n/a	Yes	n/a	n/a	Yes
Voice Dialing	n/a	-	n/a	n/a	-
Customization
Changeable Body Plates	-	Yes	-	-	-
Custom Graphics	n/a	Yes	n/a	n/a	Yes
Custom Ringtones	n/a	Yes	n/a	n/a	Yes
Real-Music Ringers	n/a	-	n/a	n/a	Yes
Data & Network
Data Tethering	n/a	-	n/a	n/a	Yes
External Antenna Jack	n/a	-	n/a	n/a	-
WAP / Web Browser	n/a	Yes	n/a	n/a	Yes
Input
Predictive Text Entry	n/a	Yes	n/a	n/a	Yes
Side Keys	Yes	-	Yes	Yes	Yes
Stylus	-	-	-	Yes	-
Text Keyboard, Hardware	-	-	-	Yes	-
Touch Screen	Yes Capacitive	-	Yes Capacitive	Yes Resistive	-
Memory
Memory Card Slot	Yes	-	Yes	Yes	Yes
Messaging
Email Client	n/a	-	n/a	n/a	Yes
EMS / Picture Messaging	n/a	Yes	n/a	n/a	-
Instant Messaging	n/a	-	n/a	n/a	Yes
MMS	n/a	Yes	n/a	n/a	Yes
Text Messaging Templates	n/a	Yes	n/a	n/a	Yes
Music
FM Radio	-	-	Yes	-	-
Headphone Jack (3.5mm)	Yes	-	Yes	-	-
Music Player	n/a	-	n/a	n/a	Yes
Power
Wireless Charging	Yes	-	-	-	-
Productivity
Alarm	n/a	Yes	n/a	n/a	Yes
Calculator	n/a	Yes	n/a	n/a	Yes
Calendar	n/a	Yes	n/a	n/a	Yes
To-Do List	n/a	Yes	n/a	n/a	Yes
Voice Memo	n/a	Yes	n/a	n/a	Yes
Software
Games	n/a	Yes	n/a	n/a	Yes
Java (J2ME)	n/a	Yes	n/a	n/a	Yes
Voice
Call Screening	-	Yes	-	-	-
Push-To-Talk	-	Yes *	-	-	-
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Nokia Lumia 810	Siemens CT66 / C66 / C65 / C71 / C70	Huawei Valiant	Palm Treo 800w	Samsung SGH-A717
	X >	< X >	< X >	< X >	< X

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


Phone	Nokia Lumia 810	Siemens CT66 / C66 / C65 / C71 / C70	Huawei Valiant	Palm Treo 800w	Samsung SGH-A717