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Phone	Siemens SX66 / MDA III / PDA2K (HTC Blue Angel)	Palm Treo 650 (CDMA)	HTC Desire 520	Samsung MM-A900 / SPH-A900 / Ace	LG Revolution
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	?	4.5" diag. 16 : 9	?	4.3" diag. 5 : 3
Display Resolution & Type	240 x 320 pixels LCD (TFT/TFD)	320 x 320 pixels LCD (TFT/TFD)	480 x 854 pixels (~218 ppi) LCD (TFT/TFD)	240 x 320 pixels LCD (TFT/TFD)	480 x 800 pixels (~217 ppi) LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	?	60 Hz
Battery	1,490 mAh	?	2,000 mAh	?	1,500 mAh
Processor	400 MHz Intel XScale	312 MHz Intel XScale PXA270	1.1 GHz Qualcomm Snapdragon 210 (MSM8909)	?	1 GHz Qualcomm Snapdragon S2 MSM8655
RAM	?	?	1 GB	?	?
Storage	? raw hardware	? raw hardware	8 GB	? raw hardware	16 GB
Main Camera	Yes	Yes	8 megapixel	1 megapixel	5 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	QCIF (176 x 144)	QVGA (320 x 240)	720p HD	?	720p HD
Front Camera	-	-	2 megapixel	-	1 megapixel
Weight	7.41 oz (210g)	6.3 oz (179g)	4.9 oz (139g)	3.9 oz (111g)	6.08 oz (172g)
Dimensions	4.92" x 2.83" x 0.75" (125 x 72 x 19.1 mm)	4.4" x 2.3" x 0.9" (112 x 58 x 22.9 mm)	5.5" x 2.71" x 0.36" (140 x 69 x 9 mm)	3.86" x 2.01" x 0.57" (98 x 51 x 14.5 mm)	5.03" x 2.64" x 0.52" (128 x 67 x 13.2 mm)
Form Factor	Slide	Slab	Slab	Clamshell	Slab
Platform / OS	Windows Mobile Professional	Palm OS	Android	(proprietary)	Android
Network Bands	GSM: 850, 900, 1800, 1900	CDMA: 850, 1900	4G LTE: 2, 4, 5, 17 WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900	4G LTE: 13 CDMA: 850, 1900
Data Technology	GPRS	1xRTT	LTE (Cat 3)	EVDO r0	LTE (Cat 3)
Features
GPS / Location	n/a	n/a	n/a	Yes	n/a
Accessibility
Adjustable Text Size	n/a	n/a	n/a	-	n/a
Hearing Aid Compatible	-	-	Yes M4, T3 (mostly tele-coil compatible)	-	Yes M4, T3 (mostly tele-coil compatible)
Multiple Languages	n/a	n/a	n/a	Yes	n/a
TTY/TDD (Digital)	-	-	Yes	Yes	Yes
Alerts
Extra Display	-	-	-	Yes	-
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	Yes
Infrared (IR)	Yes	Yes	-	-	-
Mobile Hotspot	n/a	n/a	n/a	-	n/a
USB	Yes	-	Yes Micro-USB	Yes	Yes
Wi-Fi	Yes	-	Yes 4 (802.11 b,g,n)	-	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	n/a	n/a	n/a	Yes	n/a
Ringer ID	n/a	n/a	n/a	Yes	n/a
Voice Dialing	n/a	n/a	n/a	Yes	n/a
Customization
Custom Graphics	n/a	n/a	n/a	Yes	n/a
Custom Ringtones	n/a	n/a	n/a	Yes	n/a
Real-Music Ringers	n/a	n/a	n/a	-	n/a
Data & Network
Data Tethering	n/a	n/a	n/a	Yes	n/a
WAP / Web Browser	n/a	n/a	n/a	Yes	n/a
Input
Predictive Text Entry	n/a	n/a	n/a	Yes	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	Yes	Yes	-	-	-
Touch Screen	Yes	Yes	Yes Capacitive	-	Yes Capacitive
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	n/a	-	n/a
MMS	n/a	n/a	n/a	-	n/a
Text Messaging Templates	n/a	n/a	n/a	Yes	n/a
Music
FM Radio	-	-	Yes	-	-
Headphone Jack (3.5mm)	-	-	Yes	-	Yes
Music Player	n/a	n/a	n/a	Yes	n/a
Photo & Video
DLNA	-	-	Yes	-	Yes
TV Output	-	-	-	-	Yes
Video Calling	n/a	n/a	n/a	-	n/a
Productivity
Alarm	n/a	n/a	n/a	Yes	n/a
Calculator	n/a	n/a	n/a	Yes	n/a
Calendar	n/a	n/a	n/a	Yes	n/a
To-Do List	n/a	n/a	n/a	Yes	n/a
Voice Memo	n/a	n/a	n/a	Yes	n/a
Software
Games	n/a	n/a	n/a	Yes	n/a
Java (J2ME)	n/a	n/a	n/a	Yes	n/a
Voice
Headset Jack (2.5 mm)	n/a	n/a	n/a	Yes	n/a
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Siemens SX66 / MDA III / PDA2K (HTC Blue Angel)	Palm Treo 650 (CDMA)	HTC Desire 520	Samsung MM-A900 / SPH-A900 / Ace	LG Revolution
	X >	< X >	< X >	< X >	< X

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


Phone	Siemens SX66 / MDA III / PDA2K (HTC Blue Angel)	Palm Treo 650 (CDMA)	HTC Desire 520	Samsung MM-A900 / SPH-A900 / Ace	LG Revolution