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Specifications
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Phone	Palm Treo 650 (CDMA)	LG AX-490	Samsung Galaxy S II Skyrocket	Nokia Lumia 521 / 520	Nokia 6290
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	?	4.5" diag. 5 : 3	4" diag. 5 : 3	2.2" diag. 4 : 3
Display Resolution & Type	320 x 320 pixels LCD (TFT/TFD)	128 x 160 pixels LCD (TFT/TFD)	480 x 800 pixels (~207 ppi) AMOLED	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	240 x 320 pixels (~182 ppi) LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	?	?
Battery	?	1,100 mAh	1,850 mAh	1,430 mAh	950 mAh
Processor	312 MHz Intel XScale PXA270	?	1.5 GHz Qualcomm Snapdragon S3 APQ8060	1 GHz Qualcomm Snapdragon S4 MSM8270	369 MHz ARM 11
RAM	?	?	1 GB	512 MB	?
Storage	? raw hardware	? raw hardware	16 GB	8 GB	? raw hardware
Main Camera	Yes	Yes	8 megapixel	5 megapixel	2 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	QVGA (320 x 240)	-	1080p HD	720p HD	QCIF (176 x 144)
Front Camera	-	-	2 megapixel	-	-
Weight	6.3 oz (179g)	3.79 oz (107g)	4.71 oz (133g)	4.39 oz (124g)	4.06 oz (115g)
Dimensions	4.4" x 2.3" x 0.9" (112 x 58 x 22.9 mm)	3.74" x 1.92" x 1" (95 x 49 x 25.4 mm)	5.12" x 2.72" x 0.35" (130 x 69 x 9 mm)	4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm)	3.7" x 1.97" x 0.82" (94 x 50 x 20.8 mm)
Form Factor	Slab	Clamshell	Slab	Slab	Clamshell
Platform / OS	Palm OS	(proprietary)	Android	Windows	S60 (Symbian)
Network Bands	CDMA: 850, 1900	CDMA: 850, 1900 AMPS: 850	4G LTE: 4, 17 WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 *	WCDMA: 1 GSM: 850, 900, 1800, 1900
Data Technology	1xRTT	1xRTT	LTE (Cat 3)	HSPA+ 21	EDGE
Features
GPS / Location	n/a	Yes	n/a	n/a	n/a
Accessibility
Adjustable Text Size	n/a	-	n/a	n/a	n/a
Hearing Aid Compatible	-	Yes M3 (mostly compatible)	Yes M3 (mostly compatible)	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	-	-	Yes
Ringer Profiles	-	-	-	-	Yes
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	Yes
Infrared (IR)	Yes	-	-	-	Yes
Mobile Hotspot	n/a	-	n/a	n/a	n/a
NFC	-	-	Yes	-	-
USB	-	Yes	Yes Micro-USB	Yes	Yes Mini-USB
Wi-Fi	-	-	Yes 4 (802.11 a,b,g,n)	Yes	-
Contacts
Picture ID	n/a	Yes	n/a	n/a	n/a
Ringer ID	n/a	Yes	n/a	n/a	n/a
Voice Dialing	n/a	Yes	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	Yes	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	-	n/a	n/a	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	Yes	Yes	-	-	-
Touch Screen	Yes	-	Yes Capacitive	Yes Capacitive	-
Memory
Memory Card Slot	Yes	-	Yes	Yes	Yes
Messaging
Email Client	n/a	-	n/a	n/a	n/a
Instant Messaging	n/a	-	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
Headphone Jack (3.5mm)	-	-	Yes	Yes	-
Music Player	n/a	-	n/a	n/a	n/a
Stereo Speakers	-	Yes	-	-	Yes
Photo & Video
DLNA	-	-	Yes	-	-
TV Output	-	-	Yes	-	-
Video Calling	n/a	-	n/a	n/a	n/a
Productivity
Alarm	n/a	Yes	n/a	n/a	n/a
Calculator	n/a	Yes	n/a	n/a	n/a
Calendar	n/a	Yes	n/a	n/a	n/a
To-Do List	n/a	-	n/a	n/a	n/a
Voice Memo	n/a	Yes	n/a	n/a	n/a
Software
BREW	n/a	Yes	n/a	n/a	n/a
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 *
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Palm Treo 650 (CDMA)	LG AX-490	Samsung Galaxy S II Skyrocket	Nokia Lumia 521 / 520	Nokia 6290
	X >	< X >	< X >	< X >	< X

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


Phone	Palm Treo 650 (CDMA)	LG AX-490	Samsung Galaxy S II Skyrocket	Nokia Lumia 521 / 520	Nokia 6290