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Phone	Palm Treo 680	Pantech Matrix Pro C820	Nokia 3555	ZTE Blade Vantage	HTC Radar
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	2.4" diag. 4 : 3	1.8" diag. 4 : 3	5" diag. 16 : 9	3.8" diag. 5 : 3
Display Resolution & Type	320 x 320 pixels LCD (TFT/TFD)	240 x 320 pixels (~167 ppi) LCD (TFT/TFD)	128 x 160 pixels (~114 ppi) LCD (TFT/TFD)	480 x 854 pixels (~196 ppi) LCD (TFT/TFD)	480 x 800 pixels (~246 ppi) LCD (TFT/TFD)
Display Refresh	?	?	?	60 Hz	?
Battery	?	1,320 mAh	?	2,500 mAh	1,520 mAh
Processor	?	528 MHz ARM 11	?	1.1 GHz Qualcomm Snapdragon 210 (MSM8909)	1 GHz Qualcomm Snapdragon S2 MSM8255
RAM	?	?	?	2 GB	?
Storage	? raw hardware	? raw hardware	? raw hardware	16 GB	8 GB
Main Camera	Yes	2 megapixel	Yes	8 megapixel	5 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	CIF (352 x 288)	QCIF (176 x 144)	QCIF (176 x 144)	720p HD	720p HD
Front Camera	-	-	-	2 megapixel	Yes
Weight	5.5 oz (156g)	5.34 oz (151g)	3.32 oz (94g)	5.29 oz (150g)	4.83 oz (137g)
Dimensions	4.4" x 2.3" x 0.8" (112 x 58 x 20.3 mm)	4.2" x 2" x 0.9" (107 x 51 x 22.9 mm)	3.94" x 1.75" x 0.83" (100 x 44 x 21 mm)	5.73" x 2.85" x 0.36" (146 x 72 x 9.2 mm)	4.7" x 2.4" x 0.43" (119 x 61 x 10.9 mm)
Form Factor	Slab	Slide	Clamshell	Slab	Slab
Platform / OS	Palm OS	Windows Mobile Standard	(proprietary)	Android	Windows
Network Bands	GSM: 850, 900, 1800, 1900	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	WCDMA: 4 GSM: 850, 900, 1800, 1900 *	4G LTE: 2, 4, 5, 13	WCDMA: 1, 2, 4 GSM: 850, 900, 1800, 1900 *
Data Technology	EDGE	HSDPA 3.6	WCDMA (UMTS)	LTE (Cat 4)	HSPA 14.4
Features
Flashlight	-	-	-	Yes	-
GPS / Location	n/a	n/a	-	n/a	n/a
Accessibility
Hearing Aid Compatible	-	-	Yes *	Yes	Yes
Multiple Languages	n/a	n/a	Yes	n/a	n/a
TTY/TDD (Digital)	Yes	Yes	-	Yes	Yes
Alerts
Extra Display	-	-	Yes	-	-
Ringer Profiles	-	Yes	Yes	-	-
Connectivity
Bluetooth	Yes Classic Audio	Yes Classic Audio	Yes Classic Audio	Yes Classic Audio	Yes Classic Audio
Infrared (IR)	Yes	-	-	-	-
Mobile Hotspot	n/a	n/a	-	n/a	n/a
USB	Yes	Yes	Yes	Yes Micro-USB	Yes Micro-USB
Wi-Fi	-	-	-	Yes 4 (802.11 b,g,n)	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	n/a	n/a	Yes	n/a	n/a
Ringer ID	n/a	n/a	Yes	n/a	n/a
Voice Dialing	n/a	n/a	Yes	n/a	n/a
Customization
Custom Graphics	n/a	n/a	Yes	n/a	n/a
Custom Ringtones	n/a	n/a	Yes	n/a	n/a
Real-Music Ringers	n/a	n/a	Yes	n/a	n/a
Data & Network
Data Tethering	n/a	n/a	-	n/a	n/a
External Antenna Jack	n/a	n/a	-	n/a	n/a
WAP / Web Browser	n/a	n/a	Yes	n/a	n/a
Input
Predictive Text Entry	n/a	n/a	Yes	n/a	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	Yes	Yes	-	-	-
Touch Screen	Yes	-	-	Yes	Yes
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	Yes *	n/a	n/a
MMS	n/a	n/a	Yes	n/a	n/a
Text Messaging Templates	n/a	n/a	Yes	n/a	n/a
Music
FM Radio	-	-	-	-	Yes
Headphone Jack (3.5mm)	-	-	-	Yes	Yes
Music Player	n/a	n/a	Yes	n/a	n/a
Productivity
Alarm	n/a	n/a	Yes	n/a	n/a
Calculator	n/a	n/a	Yes	n/a	n/a
Calendar	n/a	n/a	Yes	n/a	n/a
To-Do List	n/a	n/a	Yes	n/a	n/a
Voice Memo	n/a	n/a	Yes	n/a	n/a
Software
Games	n/a	n/a	Yes	n/a	n/a
Java (J2ME)	n/a	n/a	Yes	n/a	n/a
Voice
HD Voice	-	-	-	Yes	-
Headset Jack (2.5 mm)	n/a	n/a	Yes	n/a	n/a
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Palm Treo 680	Pantech Matrix Pro C820	Nokia 3555	ZTE Blade Vantage	HTC Radar
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NOTE: Differences are highlighted with bold / black text for visual clarity only.


Phone	Palm Treo 680	Pantech Matrix Pro C820	Nokia 3555	ZTE Blade Vantage	HTC Radar