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Phone	Samsung M520	HTC Desire 555	Palm Treo Pro (GSM)	Nokia 6170	PCD Chaser
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	2.1" diag. 4 : 3	5" diag. 16 : 9	?	?	3.2" diag. 5 : 3
Display Resolution & Type	176 x 220 pixels (~134 ppi) LCD (TFT/TFD)	720 x 1280 pixels (~294 ppi) LCD (TFT/TFD)	320 x 320 pixels LCD (TFT/TFD)	128 x 160 pixels LCD (TFT/TFD)	320 x 480 pixels (~180 ppi) LCD (TFT/TFD)
Display Refresh	?	60 Hz	?	?	60 Hz
Battery	?	2,200 mAh	1,500 mAh	760 mAh	1,450 mAh
Processor	?	1.1 GHz Qualcomm Snapdragon 210 (MSM8909)	400 MHz MSM7201	?	800 MHz Qualcomm MSM7627T
RAM	?	2 GB	?	?	512 MB
Storage	? raw hardware	16 GB	? raw hardware	? raw hardware	512 MB
Main Camera	1 megapixel	8 megapixel	2 megapixel	Yes	3 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	?	720p HD	?	?	?
Front Camera	-	5 megapixel	-	-	-
Weight	2.75 oz (78g)	4.93 oz (140g)	4.69 oz (133g)	4.34 oz (123g)	4.2 oz (119g)
Dimensions	4.01" x 2.04" x 0.5" (102 x 52 x 12.7 mm)	5.78" x 2.79" x 0.33" (147 x 71 x 8.4 mm)	4.49" x 2.36" x 0.53" (114 x 60 x 13.5 mm)	3.46" x 1.81" x 0.94" (88 x 46 x 23.9 mm)	4.5" x 2.25" x 0.52" (114 x 57 x 13.2 mm)
Form Factor	Slide	Slab	Slab	Clamshell	Slab
Platform / OS	(proprietary)	Android	Windows Mobile Professional	(proprietary)	Android
Network Bands	CDMA: 850, 1900	4G LTE: 2, 4, 5, 12 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	GSM: 850, 1800, 1900 *	CDMA: 1900
Data Technology	EVDO r0	LTE (Cat 4)	HSDPA 3.6	EDGE	EVDO rA
Features
Flashlight	-	Yes	-	-	-
GPS / Location	Yes	n/a	n/a	-	n/a
Accessibility
Hearing Aid Compatible	Yes	Yes *	-	-	Yes
Multiple Languages	Yes	n/a	n/a	Yes	n/a
TTY/TDD (Digital)	Yes	Yes	-	Yes	Yes
Alerts
Extra Display	-	-	-	Yes	-
Ringer Profiles	-	-	-	Yes	-
Connectivity
Bluetooth	Yes Classic Audio	Yes Classic Audio	Yes Classic Audio	-	Yes
Infrared (IR)	-	-	-	Yes	-
USB	Yes	Yes Micro-USB	Yes Micro-USB	Yes	Yes
Wi-Fi	-	Yes 4 (802.11 b,g,n)	Yes 802.11 b,g	-	Yes 802.11 b,g
Contacts
Picture ID	Yes	n/a	n/a	Yes	n/a
Ringer ID	Yes	n/a	n/a	-	n/a
Voice Dialing	Yes	n/a	n/a	Yes	n/a
Customization
Custom Graphics	Yes	n/a	n/a	Yes	n/a
Custom Ringtones	Yes	n/a	n/a	Yes	n/a
Real-Music Ringers	-	n/a	n/a	-	n/a
Data & Network
Data Tethering	Yes	n/a	n/a	Yes	n/a
WAP / Web Browser	Yes	n/a	n/a	Yes	n/a
Input
Predictive Text Entry	Yes	n/a	n/a	Yes	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Stylus	-	-	Yes	-	-
Text Keyboard, Hardware	-	-	Yes	-	-
Touch Screen	-	Yes	Yes	-	Yes
Memory
Memory Card Slot	Yes	Yes	Yes	-	Yes
Messaging
Email Client	-	n/a	n/a	Yes	n/a
EMS / Picture Messaging	-	n/a	n/a	Yes	n/a
Instant Messaging	-	n/a	n/a	Yes	n/a
MMS	-	n/a	n/a	Yes	n/a
Text Messaging Templates	Yes	n/a	n/a	Yes	n/a
Music
FM Radio	-	Yes	-	-	-
Headphone Jack (3.5mm)	-	Yes	Yes	-	Yes
Music Player	Yes	n/a	n/a	-	n/a
Photo & Video
DLNA	-	Yes	-	-	-
Miracast	-	Yes	-	-	-
Productivity
Alarm	Yes	n/a	n/a	Yes	n/a
Calculator	Yes	n/a	n/a	Yes	n/a
Calendar	Yes	n/a	n/a	Yes	n/a
To-Do List	Yes	n/a	n/a	Yes	n/a
Voice Memo	Yes	n/a	n/a	Yes	n/a
Software
Games	Yes	n/a	n/a	Yes	n/a
Java (J2ME)	Yes	n/a	n/a	Yes	n/a
Voice
HD Voice	-	Yes	-	-	-
Push-To-Talk	-	-	-	Yes	-
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Samsung M520	HTC Desire 555	Palm Treo Pro (GSM)	Nokia 6170	PCD Chaser
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung M520	HTC Desire 555	Palm Treo Pro (GSM)	Nokia 6170	PCD Chaser