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Phone	Siemens CT66 / C66 / C65 / C71 / C70	LG Tritan AX-840 / UX-840	BlackBerry Storm2 9550	Samsung Knack U310	Nokia Lumia 810
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	3" diag. 5 : 3	3.3" diag. 4 : 3	2.2" diag. 4 : 3	4.3" diag. 5 : 3
Display Resolution & Type	130 x 130 pixels LCD (Color)	240 x 400 pixels (~155 ppi) LCD (TFT/TFD)	360 x 480 pixels (~185 ppi) LCD (TFT/TFD)	176 x 220 pixels (~128 ppi) LCD (TFT/TFD)	480 x 800 pixels (~217 ppi) AMOLED
Display Refresh	?	?	?	?	?
Battery	600 mAh	950 mAh	1,400 mAh	1,000 mAh	1,800 mAh
Processor	?	?	?	?	1.5 GHz Qualcomm Snapdragon
RAM	?	?	?	?	1 GB
Storage	? raw hardware	? raw hardware	? raw hardware	? raw hardware	8 GB
Main Camera	Yes	3 megapixel	3 megapixel	-	8 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	QVGA (320 x 240)	?	-	1080p HD
Front Camera	-	-	-	-	1 megapixel
Weight	3 oz (85g)	5.03 oz (143g)	5.64 oz (160g)	3.63 oz (103g)	5.11 oz (145g)
Dimensions	4.1" x 1.8" x 0.7" (104 x 46 x 17.8 mm)	4.45" x 2.24" x 0.65" (113 x 57 x 16.5 mm)	4.43" x 2.45" x 0.55" (113 x 62 x 14 mm)	3.78" x 2.01" x 0.74" (96 x 51 x 18.8 mm)	5" x 2.69" x 0.44" (127 x 68 x 11.2 mm)
Form Factor	Slab	Slide	Slab	Clamshell	Slab
Platform / OS	(proprietary)	(proprietary)	BlackBerry OS	(proprietary)	Windows
Network Bands	GSM: 850, 1800, 1900 *	CDMA: 850, 1900	WCDMA: 1 CDMA: 850, 1900 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900	WCDMA: 1, 2, 4, 5 GSM: 850, 900, 1800, 1900
Data Technology	GPRS	EVDO r0	EVDO rA	-	HSPA+ 42
Features
GPS / Location	-	Yes	n/a	Yes	n/a
Accessibility
Adjustable Text Size	-	Yes	n/a	Yes	n/a
Hearing Aid Compatible	-	Yes M4, T4 (very tele-coil compatible)	Yes M3 (mostly compatible)	Yes M4, T4 (very tele-coil compatible)	Yes M3, T4 (very tele-coil compatible)
Multiple Languages	Yes	Yes	n/a	Yes	n/a
TTY/TDD (Digital)	-	Yes	Yes	Yes	Yes
Alerts
Extra Display	-	-	-	Yes	-
Ringer Profiles	Yes	-	Yes	-	-
Connectivity
Bluetooth	-	Yes	Yes	-	Yes
Infrared (IR)	Yes	-	-	-	-
Mobile Hotspot	-	-	n/a	-	n/a
NFC	-	-	-	-	Yes
USB	Yes	Yes Micro-USB	Yes	-	Yes Micro-USB
Wi-Fi	-	-	Yes 802.11 b,g	-	Yes 4 (802.11 a,b,g,n)
Contacts
Picture ID	Yes	Yes	n/a	-	n/a
Ringer ID	Yes	Yes	n/a	-	n/a
Voice Dialing	-	Yes	n/a	Yes	n/a
Customization
Changeable Body Plates	Yes	-	-	-	-
Custom Graphics	Yes	Yes	n/a	-	n/a
Custom Ringtones	Yes	Yes	n/a	-	n/a
Real-Music Ringers	-	Yes	n/a	-	n/a
Data & Network
Data Tethering	-	-	n/a	-	n/a
WAP / Web Browser	Yes	Yes	n/a	-	n/a
Input
Predictive Text Entry	Yes	-	n/a	Yes	n/a
Side Keys	-	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	Yes	-	-	-
Touch Screen	-	Yes	Yes Capacitive	-	Yes Capacitive
Memory
Memory Card Slot	-	Yes	Yes	-	Yes
Messaging
Email Client	-	Yes	n/a	-	n/a
EMS / Picture Messaging	Yes	-	n/a	Yes	n/a
Instant Messaging	-	Yes	n/a	-	n/a
MMS	Yes	Yes	n/a	-	n/a
Text Messaging Templates	Yes	Yes	n/a	-	n/a
Music
Headphone Jack (3.5mm)	-	Yes	Yes	-	Yes
Music Player	-	Yes	n/a	-	n/a
Power
Wireless Charging	-	-	-	-	Yes
Productivity
Alarm	Yes	Yes	n/a	Yes	n/a
Calculator	Yes	Yes	n/a	Yes	n/a
Calendar	Yes	Yes	n/a	Yes	n/a
To-Do List	Yes	-	n/a	-	n/a
Voice Memo	Yes	Yes	n/a	-	n/a
Software
BREW	-	Yes	n/a	-	n/a
Games	Yes	Yes	n/a	-	n/a
Java (J2ME)	Yes	-	n/a	-	n/a
Voice
Call Screening	Yes	-	-	-	-
Headset Jack (2.5 mm)	-	-	n/a	Yes	n/a
Push-To-Talk	Yes *	-	-	-	-
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Siemens CT66 / C66 / C65 / C71 / C70	LG Tritan AX-840 / UX-840	BlackBerry Storm2 9550	Samsung Knack U310	Nokia Lumia 810
	X >	< X >	< X >	< X >	< X

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


Phone	Siemens CT66 / C66 / C65 / C71 / C70	LG Tritan AX-840 / UX-840	BlackBerry Storm2 9550	Samsung Knack U310	Nokia Lumia 810