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Phone	HTC ThunderBolt	Motorola V177	Nokia Lumia 810	Nokia N81	HP iPAQ 510 Voice Messenger
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Not yet 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	480 x 800 pixels (~217 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (STN)	480 x 800 pixels (~217 ppi) AMOLED	240 x 320 pixels (~167 ppi) LCD (TFT/TFD)	176 x 220 pixels (~141 ppi) LCD (TFT/TFD)
Display Refresh	60 Hz	?	?	?	?
Battery	1,400 mAh	?	1,800 mAh	1,050 mAh	1,100 mAh
Processor	1 GHz Qualcomm Snapdragon S2 MSM8655	?	1.5 GHz Qualcomm Snapdragon	369 MHz ARM 11	200 MHz TI OMAP 850
RAM	768 MB	?	1 GB	?	?
Storage	8 GB	? raw hardware	8 GB	8 GB *	? raw hardware
Main Camera	8 megapixel	-	8 megapixel	2 megapixel	1 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	720p HD	-	1080p HD	VGA (640 x 480)	QCIF (176 x 144)
Front Camera	1 megapixel	-	1 megapixel	-	-
Weight	5.78 oz (164g)	3.67 oz (104g)	5.11 oz (145g)	4.94 oz (140g)	3.6 oz (102g)
Dimensions	4.8" x 2.6" x 0.52" (122 x 66 x 13.2 mm)	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)	4.02" 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	Slab	Clamshell	Slab	Slide	Slab
Platform / OS	Android	(proprietary)	Windows	S60 (Symbian)	Windows Mobile Standard
Network Bands	4G LTE: 13 CDMA: 850, 1900	GSM: 850, 1900	WCDMA: 1, 2, 4, 5 GSM: 850, 900, 1800, 1900	WCDMA: 1 GSM: 850, 900, 1800, 1900	GSM: 850, 900, 1800, 1900
Data Technology	LTE (Cat 3)	GPRS	HSPA+ 42	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	-	Yes M3, T4 (very tele-coil compatible)	-	-
Multiple Languages	n/a	Yes	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 b,g,n)	-	Yes 4 (802.11 a,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	n/a	Yes	n/a	n/a	n/a
Custom Ringtones	n/a	Yes	n/a	n/a	n/a
Real-Music Ringers	n/a	-	n/a	n/a	n/a
Data & Network
Data Tethering	n/a	Yes	n/a	n/a	n/a
WAP / Web Browser	n/a	Yes	n/a	n/a	n/a
Input
Predictive Text Entry	n/a	Yes	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	n/a	Yes	n/a	n/a	n/a
Instant Messaging	n/a	Yes	n/a	n/a	n/a
MMS	n/a	Yes	n/a	n/a	n/a
Text Messaging Templates	n/a	Yes	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	n/a	Yes	n/a	n/a	n/a
Calculator	n/a	Yes	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	n/a	Yes	n/a	n/a	n/a
Java (J2ME)	n/a	-	n/a	n/a	n/a
Voice
Headset Jack (2.5 mm)	n/a	Yes	n/a	n/a	n/a
Push-To-Talk	-	Yes *	-	Yes *	-
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	HTC ThunderBolt	Motorola V177	Nokia Lumia 810	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	HTC ThunderBolt	Motorola V177	Nokia Lumia 810	Nokia N81	HP iPAQ 510 Voice Messenger