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Phone	Samsung SGH-X640	HTC SDA (USA) / SP5m (Tornado)	HTC Droid Eris	HTC Desire 555	Pantech Matrix Pro C820
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	2.2" diag. 4 : 3	3.2" diag. 5 : 3	5" diag. 16 : 9	2.4" diag. 4 : 3
Display Resolution & Type	128 x 160 pixels LCD (TFT/TFD)	240 x 320 pixels (~182 ppi) LCD (TFT/TFD)	320 x 480 pixels (~180 ppi) LCD (TFT/TFD)	720 x 1280 pixels (~294 ppi) LCD (TFT/TFD)	240 x 320 pixels (~167 ppi) LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	60 Hz	?
Battery	800 mAh	?	1,300 mAh	2,200 mAh	1,320 mAh
Processor	?	?	528 MHz MSM7600	1.1 GHz Qualcomm Snapdragon 210 (MSM8909)	528 MHz ARM 11
RAM	?	?	?	2 GB	?
Storage	? raw hardware	? raw hardware	? raw hardware	16 GB	? raw hardware
Main Camera	Yes	1 megapixel	5 megapixel	8 megapixel	2 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	QCIF (176 x 144)	CIF (352 x 288)	720p HD	QCIF (176 x 144)
Front Camera	-	-	-	5 megapixel	-
Weight	3 oz (85g)	3.74 oz (106g)	4.43 oz (126g)	4.93 oz (140g)	5.34 oz (151g)
Dimensions	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	4.53" x 1.82" x 0.69" (115 x 46 x 17.5 mm)	4.45" x 2.19" x 0.52" (113 x 55 x 13.2 mm)	5.78" x 2.79" x 0.33" (147 x 71 x 8.4 mm)	4.2" x 2" x 0.9" (107 x 51 x 22.9 mm)
Form Factor	Clamshell	Slab	Slab	Slab	Slide
Platform / OS	(proprietary)	Windows Mobile Standard	Android	Android	Windows Mobile Standard
Network Bands	GSM: 900, 1800, 1900	GSM: 850, 900, 1800, 1900	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
Data Technology	GPRS	EDGE	EVDO rA	LTE (Cat 4)	HSDPA 3.6
Features
Flashlight	-	-	-	Yes	-
GPS / Location	-	n/a	n/a	n/a	n/a
Accessibility
Hearing Aid Compatible	-	-	Yes M3, T3 (mostly tele-coil compatible)	Yes * M4, T4 (very tele-coil compatible)	-
Multiple Languages	Yes	n/a	n/a	n/a	n/a
TTY/TDD (Digital)	-	Yes	Yes	Yes	Yes
Alerts
Ringer Profiles	-	Yes	-	-	Yes
Connectivity
Bluetooth	-	Yes	Yes	Yes	Yes
Infrared (IR)	-	Yes	-	-	-
USB	-	Yes Mini-USB	Yes Mini-USB	Yes Micro-USB	Yes
Wi-Fi	-	Yes	Yes 802.11 b,g	Yes 4 (802.11 b,g,n)	-
Contacts
Picture ID	Yes	n/a	n/a	n/a	n/a
Ringer ID	Yes	n/a	n/a	n/a	n/a
Voice Dialing	-	n/a	n/a	n/a	n/a
Customization
Custom Graphics	Yes	n/a	n/a	n/a	n/a
Custom Ringtones	Yes	n/a	n/a	n/a	n/a
Real-Music Ringers	-	n/a	n/a	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	Yes	n/a	n/a	n/a	n/a
Input
Predictive Text Entry	Yes	n/a	n/a	n/a	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	-	-	-	Yes
Touch Screen	-	-	Yes Capacitive	Yes Capacitive	-
Memory
Memory Card Slot	-	Yes	Yes	Yes	Yes
Messaging
Email Client	-	n/a	n/a	n/a	n/a
EMS / Picture Messaging	Yes	n/a	n/a	n/a	n/a
Instant Messaging	-	n/a	n/a	n/a	n/a
MMS	Yes	n/a	n/a	n/a	n/a
Text Messaging Templates	Yes	n/a	n/a	n/a	n/a
Music
FM Radio	-	-	-	Yes	-
Headphone Jack (3.5mm)	-	-	Yes	Yes	-
Music Player	-	n/a	n/a	n/a	n/a
Photo & Video
DLNA	-	-	-	Yes	-
Miracast	-	-	-	Yes	-
Productivity
Alarm	Yes	n/a	n/a	n/a	n/a
Calculator	Yes	n/a	n/a	n/a	n/a
Calendar	Yes	n/a	n/a	n/a	n/a
To-Do List	Yes	n/a	n/a	n/a	n/a
Voice Memo	Yes	n/a	n/a	n/a	n/a
Software
Games	Yes	n/a	n/a	n/a	n/a
Java (J2ME)	Yes	n/a	n/a	n/a	n/a
Voice
HD Voice	-	-	-	Yes	-
Headset Jack (2.5 mm)	Yes	n/a	n/a	n/a	n/a
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Samsung SGH-X640	HTC SDA (USA) / SP5m (Tornado)	HTC Droid Eris	HTC Desire 555	Pantech Matrix Pro C820
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung SGH-X640	HTC SDA (USA) / SP5m (Tornado)	HTC Droid Eris	HTC Desire 555	Pantech Matrix Pro C820