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Phone	Palm Pre Plus (CDMA)	Sony Ericsson T616	LG Sentio GS505	Sony Ericsson Z750	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	?	3" diag. 5 : 3	2.2" diag. 4 : 3	4.7" diag. 16 : 9
Display Resolution & Type	320 x 480 pixels (~186 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (STN)	240 x 400 pixels (~155 ppi) LCD (TFT/TFD)	240 x 320 pixels (~182 ppi) LCD (TFT/TFD)	720 x 1280 pixels (~312 ppi) LCD (TFT/TFD)
Display Refresh	?	?	?	?	?
Battery	?	?	900 mAh	950 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	Yes	3 megapixel	2 megapixel	5 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	?	-	?	?	720p HD
Front Camera	-	-	-	-	2 megapixel
Weight	4.89 oz (139g)	3.35 oz (95g)	3.27 oz (93g)	3.88 oz (110g)	5.01 oz (142g)
Dimensions	3.9" x 2.3" x 0.67" (99 x 58 x 17 mm)	4.02" x 1.73" x 0.75" (102 x 44 x 19.1 mm)	4.17" x 2.05" x 0.47" (106 x 52 x 12 mm)	3.83" x 1.93" x 0.79" (97 x 49 x 20.1 mm)	5.36" x 2.67" x 0.39" (136 x 68 x 9.9 mm)
Form Factor	Slide	Slab	Slab	Clamshell	Slab
Platform / OS	webOS	(proprietary)	(proprietary)	(proprietary)	Windows
Network Bands	CDMA: 850, 1900	GSM: 850, 1800, 1900	WCDMA: 4 GSM: 850, 1900	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	4G LTE: 2, 4, 5, 7, 12, 17 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900
Data Technology	EVDO rA	GPRS	HSPA 7.2	HSDPA 1.8	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, T4 (very tele-coil compatible)
Multiple Languages	n/a	Yes	Yes	Yes	n/a
TTY/TDD (Digital)	Yes	-	Yes	Yes	Yes
Alerts
Extra Display	-	-	-	Yes	-
Ringer Profiles	-	Yes	-	-	-
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	Yes
Infrared (IR)	-	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	Yes	-	-	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	n/a
Data & Network
Data Tethering	n/a	Yes	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	Yes	n/a
Instant Messaging	n/a	-	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
	* Some versions only
	Palm Pre Plus (CDMA)	Sony Ericsson T616	LG Sentio GS505	Sony Ericsson Z750	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 T616	LG Sentio GS505	Sony Ericsson Z750	Microsoft Lumia 550