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Phone	Nokia 6555	Samsung SPH-A660 / VI660	Nokia Lumia 810	Palm Treo 650 (CDMA)	HTC G2
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	2" diag. 4 : 3	?	4.3" diag. 5 : 3	?	3.7" diag. 5 : 3
Display Resolution & Type	240 x 320 pixels (~200 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (Color)	480 x 800 pixels (~217 ppi) AMOLED	320 x 320 pixels LCD (TFT/TFD)	480 x 800 pixels (~252 ppi) LCD (TFT/TFD)
Display Refresh	?	?	?	?	60 Hz
Battery	1,020 mAh	?	1,800 mAh	?	1,300 mAh
Processor	?	?	1.5 GHz Qualcomm Snapdragon	312 MHz Intel XScale PXA270	800 MHz Qualcomm S2 MSM7230
RAM	?	?	1 GB	?	?
Storage	? raw hardware	? raw hardware	8 GB	? raw hardware	? raw hardware
Main Camera	1 megapixel	-	8 megapixel	Yes	5 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	QCIF (176 x 144)	-	1080p HD	QVGA (320 x 240)	720p HD
Front Camera	-	-	1 megapixel	-	-
Weight	3.42 oz (97g)	3.54 oz (100g)	5.11 oz (145g)	6.3 oz (179g)	6.5 oz (184g)
Dimensions	3.92" x 1.74" x 0.77" (100 x 44 x 19.6 mm)	3.3" x 1.8" x 0.87" (84 x 46 x 22.1 mm)	5" x 2.69" x 0.44" (127 x 68 x 11.2 mm)	4.4" x 2.3" x 0.9" (112 x 58 x 22.9 mm)	4.68" x 2.37" x 0.55" (119 x 60 x 14 mm)
Form Factor	Clamshell	Clamshell	Slab	Slab	Slab
Platform / OS	(proprietary)	(proprietary)	Windows	Palm OS	Android
Network Bands	WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 *	CDMA: 850, 1900 AMPS: 850	WCDMA: 1, 2, 4, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900	WCDMA: 1, 4 GSM: 850, 900, 1800, 1900
Data Technology	WCDMA (UMTS)	1xRTT	HSPA+ 42	1xRTT	HSPA 14.4
Features
GPS / Location	-	Yes	n/a	n/a	n/a
Accessibility
Adjustable Text Size	Yes	-	n/a	n/a	n/a
Hearing Aid Compatible	Yes M3, T3 (mostly tele-coil compatible)	-	Yes M3, T4 (very tele-coil compatible)	-	Yes M3 (mostly compatible)
Multiple Languages	Yes	Yes	n/a	n/a	n/a
TTY/TDD (Digital)	Yes	Yes	Yes	-	-
Alerts
Extra Display	Yes	-	-	-	-
Ringer Profiles	Yes	-	-	-	-
Connectivity
Bluetooth	Yes	-	Yes	Yes	Yes
Infrared (IR)	-	-	-	Yes	-
Mobile Hotspot	-	-	n/a	n/a	n/a
NFC	-	-	Yes	-	-
USB	Yes Micro-USB	-	Yes Micro-USB	-	Yes
Wi-Fi	-	-	Yes 4 (802.11 a,b,g,n)	-	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	Yes	Yes	n/a	n/a	n/a
Ringer ID	Yes	Yes	n/a	n/a	n/a
Voice Dialing	Yes	Yes	n/a	n/a	n/a
Customization
Custom Graphics	Yes	Yes	n/a	n/a	n/a
Custom Ringtones	Yes	Yes	n/a	n/a	n/a
Real-Music Ringers	Yes	-	n/a	n/a	n/a
Data & Network
Data Tethering	Yes	Yes	n/a	n/a	n/a
WAP / Web Browser	Yes	Yes	n/a	n/a	n/a
Input
Predictive Text Entry	Yes	Yes	n/a	n/a	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	-	-	Yes	Yes
Touch Screen	-	-	Yes Capacitive	Yes	Yes Capacitive
Memory
Memory Card Slot	Yes	-	Yes	Yes	Yes
Messaging
Email Client	Yes	-	n/a	n/a	n/a
Instant Messaging	Yes	-	n/a	n/a	n/a
MMS	Yes	-	n/a	n/a	n/a
Text Messaging Templates	Yes	-	n/a	n/a	n/a
Music
Headphone Jack (3.5mm)	-	-	Yes	-	Yes
Music Player	Yes	-	n/a	n/a	n/a
Power
Wireless Charging	-	-	Yes	-	-
Productivity
Alarm	Yes	Yes	n/a	n/a	n/a
Calculator	Yes	Yes	n/a	n/a	n/a
Calendar	Yes	Yes	n/a	n/a	n/a
To-Do List	Yes	Yes	n/a	n/a	n/a
Voice Memo	Yes	Yes	n/a	n/a	n/a
Software
Games	Yes	Yes	n/a	n/a	n/a
Java (J2ME)	Yes	Yes	n/a	n/a	n/a
Voice
Headset Jack (2.5 mm)	Yes	Yes	n/a	n/a	n/a
Push-To-Talk	Yes *	-	-	-	-
Speaker Phone	Yes	-	Yes	Yes	Yes
	* Some versions only
	Nokia 6555	Samsung SPH-A660 / VI660	Nokia Lumia 810	Palm Treo 650 (CDMA)	HTC G2
	X >	< X >	< X >	< X >	< X

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


Phone	Nokia 6555	Samsung SPH-A660 / VI660	Nokia Lumia 810	Palm Treo 650 (CDMA)	HTC G2