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Specifications
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Phone	Palm Pre Plus (CDMA)	Sony Ericsson Z750	LG Sentio GS505	Samsung SGH-T409	Microsoft Lumia 550
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	3.1" diag. 5 : 3	2.2" diag. 4 : 3	3" diag. 5 : 3	?	4.7" diag. 16 : 9
Display Resolution & Type	320 x 480 pixels (~186 ppi) LCD (TFT/TFD)	240 x 320 pixels (~182 ppi) LCD (TFT/TFD)	240 x 400 pixels (~155 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (TFT/TFD)	720 x 1280 pixels (~312 ppi) LCD (TFT/TFD)
Display Refresh	?	?	?	?	?
Battery	?	950 mAh	900 mAh	880 mAh	2,100 mAh
Processor	TI OMAP 3430	?	?	?	1.1 GHz Qualcomm Snapdragon 210 (MSM8909)
RAM	?	?	?	?	1 GB
Storage	? raw hardware	? raw hardware	? raw hardware	? raw hardware	8 GB
Main Camera	3 megapixel	2 megapixel	3 megapixel	1 megapixel	5 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	?	?	?	-	720p HD
Front Camera	-	-	-	-	2 megapixel
Weight	4.89 oz (139g)	3.88 oz (110g)	3.27 oz (93g)	3.1 oz (88g)	5.01 oz (142g)
Dimensions	3.9" x 2.3" x 0.67" (99 x 58 x 17 mm)	3.83" x 1.93" x 0.79" (97 x 49 x 20.1 mm)	4.17" x 2.05" x 0.47" (106 x 52 x 12 mm)	3.54" x 1.85" x 0.77" (90 x 47 x 19.6 mm)	5.36" x 2.67" x 0.39" (136 x 68 x 9.9 mm)
Form Factor	Slide	Clamshell	Slab	Clamshell	Slab
Platform / OS	webOS	(proprietary)	(proprietary)	(proprietary)	Windows
Network Bands	CDMA: 850, 1900	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	WCDMA: 4 GSM: 850, 1900	GSM: 850, 1800, 1900	4G LTE: 2, 4, 5, 7, 12, 17 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900
Data Technology	EVDO rA	HSDPA 1.8	HSPA 7.2	EDGE	LTE (Cat 4)
Features
Flashlight	-	-	-	-	Yes
GPS / Location	n/a	-	Yes	-	n/a
Accessibility
Adjustable Text Size	n/a	-	-	-	n/a
Hearing Aid Compatible	Yes M4 (very compatible)	Yes M3, T3 (mostly tele-coil compatible)	-	Yes M3, T3 (mostly tele-coil compatible)	Yes M3, T4 (very tele-coil compatible)
Multiple Languages	n/a	Yes	Yes	Yes	n/a
TTY/TDD (Digital)	Yes	Yes	Yes	Yes	Yes
Alerts
Extra Display	-	Yes	-	Yes	-
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	Yes
Mobile Hotspot	n/a	-	-	-	n/a
USB	Yes Micro-USB	Yes	Yes Micro-USB	Yes	Yes Micro-USB
Wi-Fi	Yes 802.11 b,g	-	-	-	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	n/a	Yes	Yes	Yes	n/a
Ringer ID	n/a	Yes	Yes	Yes	n/a
Voice Dialing	n/a	-	-	-	n/a
Customization
Custom Graphics	n/a	Yes	Yes	Yes	n/a
Custom Ringtones	n/a	Yes	Yes	Yes	n/a
Real-Music Ringers	n/a	Yes	Yes	Yes	n/a
Data & Network
Data Tethering	n/a	Yes	Yes	-	n/a
External Antenna Jack	n/a	Yes	-	-	n/a
WAP / Web Browser	n/a	Yes	Yes	Yes	n/a
Input
Predictive Text Entry	n/a	Yes	Yes	Yes	n/a
Side Keys	Yes	-	Yes	Yes	Yes
Text Keyboard, Hardware	Yes	-	-	-	-
Touch Screen	Yes Capacitive	-	Yes Resistive	-	Yes Capacitive
Memory
Memory Card Slot	-	Yes	Yes	-	Yes
Messaging
Email Client	n/a	Yes	Yes	-	n/a
EMS / Picture Messaging	n/a	-	-	Yes	n/a
Instant Messaging	n/a	Yes	Yes	Yes	n/a
MMS	n/a	Yes	Yes	Yes	n/a
Text Messaging Templates	n/a	Yes	Yes	Yes	n/a
Music
FM Radio	-	Yes	-	-	Yes
Headphone Jack (3.5mm)	Yes	-	-	-	Yes
Music Player	n/a	Yes	Yes	-	n/a
Photo & Video
Video Calling	n/a	Yes *	-	-	n/a
Power
Wireless Charging	Yes	-	-	-	-
Productivity
Alarm	n/a	Yes	Yes	Yes	n/a
Calculator	n/a	Yes	Yes	Yes	n/a
Calendar	n/a	Yes	Yes	Yes	n/a
To-Do List	n/a	Yes	Yes	Yes	n/a
Voice Memo	n/a	Yes	Yes	Yes	n/a
Software
Games	n/a	Yes	-	Yes	n/a
Java (J2ME)	n/a	Yes	Yes	Yes	n/a
Voice
HD Voice	-	-	-	-	Yes
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Palm Pre Plus (CDMA)	Sony Ericsson Z750	LG Sentio GS505	Samsung SGH-T409	Microsoft Lumia 550
	X >	< X >	< X >	< X >	< X

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


Phone	Palm Pre Plus (CDMA)	Sony Ericsson Z750	LG Sentio GS505	Samsung SGH-T409	Microsoft Lumia 550