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Phone	Samsung SGH-P850 / P858	Palm Treo 600 (CDMA)	ZTE Prelude / Avail 2	Nokia Lumia 521 / 520	Samsung SCH-A990
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	?	3.5" diag. 5 : 3	4" diag. 5 : 3	?
Display Resolution & Type	240 x 320 pixels LCD (TFT/TFD)	160 x 160 pixels LCD (Color)	320 x 480 pixels (~165 ppi) LCD (TFT/TFD)	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	240 x 320 pixels LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	?	?
Battery	950 mAh	?	1,500 mAh	1,430 mAh	1,000 mAh
Processor	?	?	1 GHz Qualcomm Snapdragon MSM7225A	1 GHz Qualcomm Snapdragon S4 MSM8270	?
RAM	?	?	512 MB	512 MB	?
Storage	? raw hardware	? raw hardware	4 GB	8 GB	? raw hardware
Main Camera	3 megapixel	Yes	2 megapixel	5 megapixel	3 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	?	-	VGA (640 x 480)	720p HD	?
Front Camera	-	-	-	-	-
Weight	4.23 oz (120g)	6.2 oz (176g)	4.4 oz (125g)	4.39 oz (124g)	4.4 oz (125g)
Dimensions	3.77" x 1.86" x 0.96" (96 x 47 x 24.4 mm)	4.41" x 2.36" x 0.87" (112 x 60 x 22.1 mm)	4.6" x 2.44" x 0.45" (117 x 62 x 11.4 mm)	4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm)	3.8" x 1.88" x 0.82" (97 x 48 x 20.8 mm)
Form Factor	Clamshell	Slab	Slab	Slab	Clamshell
Platform / OS	(proprietary)	Palm OS	Android	Windows	(proprietary)
Network Bands	GSM: 900, 1800, 1900	CDMA: 850, 1900	WCDMA: 2, 5 GSM: 850, 1900	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 *	CDMA: 850, 1900
Data Technology	EDGE	1xRTT	HSPA 7.2	HSPA+ 21	EVDO r0
Features
Flashlight	-	-	-	-	Yes
GPS / Location	-	n/a	n/a	n/a	Yes
Accessibility
Adjustable Text Size	-	n/a	n/a	n/a	-
Hearing Aid Compatible	-	-	Yes	Yes	Yes
Multiple Languages	Yes	n/a	n/a	n/a	Yes
TTY/TDD (Digital)	-	Yes	Yes	Yes	Yes
Alerts
Extra Display	Yes	-	-	-	Yes
Connectivity
Bluetooth	Yes Classic Audio	-	Yes Classic Audio	Yes	Yes Classic Audio
Infrared (IR)	-	Yes	-	-	-
Mobile Hotspot	-	n/a	n/a	n/a	-
USB	Yes	Yes	Yes	Yes	Yes
Wi-Fi	-	-	Yes 4 (802.11 b,g,n)	Yes	-
Contacts
Picture ID	Yes	n/a	n/a	n/a	Yes
Ringer ID	Yes	n/a	n/a	n/a	Yes
Voice Dialing	-	n/a	n/a	n/a	Yes
Customization
Custom Graphics	Yes	n/a	n/a	n/a	Yes
Custom Ringtones	Yes	n/a	n/a	n/a	Yes
Real-Music Ringers	Yes	n/a	n/a	n/a	Yes
Data & Network
Data Tethering	-	n/a	n/a	n/a	Yes
WAP / Web Browser	Yes	n/a	n/a	n/a	Yes
Input
Predictive Text Entry	Yes	n/a	n/a	n/a	Yes
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	Yes	-	-	-
Touch Screen	-	Yes	Yes	Yes	-
Memory
Memory Card Slot	Yes	Yes	Yes	Yes	Yes
Messaging
Email Client	Yes	n/a	n/a	n/a	-
EMS / Picture Messaging	-	n/a	n/a	n/a	Yes
Instant Messaging	-	n/a	n/a	n/a	-
MMS	Yes	n/a	n/a	n/a	Yes
Text Messaging Templates	Yes	n/a	n/a	n/a	Yes
Music
Headphone Jack (3.5mm)	-	-	Yes	Yes	-
Music Player	Yes	n/a	n/a	n/a	Yes
Stereo Speakers	Yes	-	-	-	Yes
Photo & Video
TV Output	Yes	-	-	-	Yes
Productivity
Alarm	Yes	n/a	n/a	n/a	Yes
Calculator	Yes	n/a	n/a	n/a	Yes
Calendar	Yes	n/a	n/a	n/a	Yes
To-Do List	-	n/a	n/a	n/a	-
Voice Memo	Yes	n/a	n/a	n/a	Yes
Software
BREW	-	n/a	n/a	n/a	Yes
Games	Yes	n/a	n/a	n/a	Yes
Java (J2ME)	Yes	n/a	n/a	n/a	-
Voice
Headset Jack (2.5 mm)	-	n/a	n/a	n/a	-
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	Samsung SGH-P850 / P858	Palm Treo 600 (CDMA)	ZTE Prelude / Avail 2	Nokia Lumia 521 / 520	Samsung SCH-A990
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung SGH-P850 / P858	Palm Treo 600 (CDMA)	ZTE Prelude / Avail 2	Nokia Lumia 521 / 520	Samsung SCH-A990