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Phone	Motorola V177	Nokia Lumia 810	HTC ThunderBolt	Nokia N81	HP iPAQ 510 Voice Messenger
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Not yet released	Released	Released	Released	Released
Display Size	?	4.3" diag. 5 : 3	4.3" diag. 5 : 3	2.4" diag. 4 : 3	2" diag. 4 : 3
Display Resolution & Type	128 x 160 pixels LCD (STN)	480 x 800 pixels (~217 ppi) AMOLED	480 x 800 pixels (~217 ppi) LCD (TFT/TFD)	240 x 320 pixels (~167 ppi) LCD (TFT/TFD)	176 x 220 pixels (~141 ppi) LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	?	?
Battery	?	1,800 mAh	1,400 mAh	1,050 mAh	1,100 mAh
Processor	?	1.5 GHz Qualcomm Snapdragon	1 GHz Qualcomm Snapdragon S2 MSM8655	369 MHz ARM 11	200 MHz TI OMAP 850
RAM	?	1 GB	768 MB	?	?
Storage	? raw hardware	8 GB	8 GB	8 GB *	? raw hardware
Main Camera	-	8 megapixel	8 megapixel	2 megapixel	1 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	1080p HD	720p HD	VGA (640 x 480)	QCIF (176 x 144)
Front Camera	-	1 megapixel	1 megapixel	-	-
Weight	3.67 oz (104g)	5.11 oz (145g)	5.78 oz (164g)	4.94 oz (140g)	3.6 oz (102g)
Dimensions	3.48" x 1.88" x 1" (88 x 48 x 25.4 mm)	5" x 2.69" x 0.44" (127 x 68 x 11.2 mm)	4.8" x 2.6" x 0.52" (122 x 66 x 13.2 mm)	4.02" x 1.97" x 0.7" (102 x 50 x 17.8 mm)	4.21" x 1.91" x 0.64" (107 x 49 x 16.3 mm)
Form Factor	Clamshell	Slab	Slab	Slide	Slab
Platform / OS	(proprietary)	Windows	Android	S60 (Symbian)	Windows Mobile Standard
Network Bands	GSM: 850, 1900	WCDMA: 1, 2, 4, 5 GSM: 850, 900, 1800, 1900	4G LTE: 13 CDMA: 850, 1900	WCDMA: 1 GSM: 850, 900, 1800, 1900	GSM: 850, 900, 1800, 1900
Data Technology	GPRS	HSPA+ 42	LTE (Cat 3)	EDGE	EDGE
Features
Flashlight	-	-	Yes	-	-
GPS / Location	-	n/a	n/a	n/a	n/a
Accessibility
Adjustable Text Size	-	n/a	n/a	n/a	n/a
Hearing Aid Compatible	-	Yes M3, T4 (very tele-coil compatible)	Yes	-	-
Multiple Languages	Yes	n/a	n/a	n/a	n/a
TTY/TDD (Digital)	Yes	Yes	Yes	-	-
Alerts
Extra Display	Yes	-	-	-	-
Ringer Profiles	Yes	-	-	Yes	Yes
Connectivity
Bluetooth	-	Yes	Yes	Yes	Yes
Mobile Hotspot	-	n/a	n/a	n/a	n/a
NFC	-	Yes	-	-	-
USB	-	Yes Micro-USB	Yes Micro-USB	Yes Micro-USB	Yes Mini-USB
Wi-Fi	-	Yes 4 (802.11 a,b,g,n)	Yes 4 (802.11 b,g,n)	Yes 802.11 b,g	Yes 802.11 b,g
Contacts
Picture ID	-	n/a	n/a	n/a	n/a
Ringer ID	-	n/a	n/a	n/a	n/a
Voice Dialing	-	n/a	n/a	n/a	n/a
Customization
Custom Graphics	Yes	n/a	n/a	n/a	n/a
Custom Ringtones	Yes	n/a	n/a	n/a	n/a
Real-Music Ringers	-	n/a	n/a	n/a	n/a
Data & Network
Data Tethering	Yes	n/a	n/a	n/a	n/a
WAP / Web Browser	Yes	n/a	n/a	n/a	n/a
Input
Predictive Text Entry	Yes	n/a	n/a	n/a	n/a
Side Keys	-	Yes	Yes	Yes	Yes
Touch Screen	-	Yes Capacitive	Yes Capacitive	-	-
Memory
Memory Card Slot	-	Yes	Yes	Yes *	Yes
Messaging
Email Client	-	n/a	n/a	n/a	n/a
EMS / Picture Messaging	Yes	n/a	n/a	n/a	n/a
Instant Messaging	Yes	n/a	n/a	n/a	n/a
MMS	Yes	n/a	n/a	n/a	n/a
Text Messaging Templates	Yes	n/a	n/a	n/a	n/a
Music
FM Radio	-	-	Yes	Yes	-
Headphone Jack (3.5mm)	-	Yes	Yes	Yes	-
Music Player	-	n/a	n/a	n/a	n/a
Stereo Speakers	-	-	-	Yes	-
Photo & Video
DLNA	-	-	Yes	-	-
Video Calling	-	n/a	n/a	n/a	n/a
Power
Wireless Charging	-	Yes	-	-	-
Productivity
Alarm	Yes	n/a	n/a	n/a	n/a
Calculator	Yes	n/a	n/a	n/a	n/a
Calendar	-	n/a	n/a	n/a	n/a
To-Do List	-	n/a	n/a	n/a	n/a
Voice Memo	-	n/a	n/a	n/a	n/a
Software
Games	Yes	n/a	n/a	n/a	n/a
Java (J2ME)	-	n/a	n/a	n/a	n/a
Voice
Headset Jack (2.5 mm)	Yes	n/a	n/a	n/a	n/a
Push-To-Talk	Yes *	-	-	Yes *	-
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Motorola V177	Nokia Lumia 810	HTC ThunderBolt	Nokia N81	HP iPAQ 510 Voice Messenger
	X >	< X >	< X >	< X >	< X

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


Phone	Motorola V177	Nokia Lumia 810	HTC ThunderBolt	Nokia N81	HP iPAQ 510 Voice Messenger