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Phone	HTC Windows Phone 8S	Palm Treo 800w	Samsung SGH-A717	Samsung SCH-A990	Microsoft Lumia 640
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	4" diag. 5 : 3	?	?	?	5" diag. 16 : 9
Display Resolution & Type	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	320 x 320 pixels LCD (TFT/TFD)	240 x 320 pixels LCD (TFT/TFD)	240 x 320 pixels LCD (TFT/TFD)	720 x 1280 pixels (~294 ppi) LCD (TFT/TFD)
Display Refresh	?	?	?	?	?
Battery	1,700 mAh	1,150 mAh	?	1,000 mAh	2,500 mAh
Processor	1 GHz Qualcomm Snapdragon S4	?	?	?	1.2 GHz Qualcomm Snapdragon 400 (MSM8926)
RAM	512 MB	?	?	?	1 GB
Storage	4 GB	? raw hardware	? raw hardware	? raw hardware	8 GB
Main Camera	5 megapixel	2 megapixel	2 megapixel	3 megapixel	8 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	720p HD	QVGA (320 x 240)	QCIF (176 x 144)	?	1080p HD
Front Camera	-	-	-	-	1 megapixel
Weight	3.99 oz (113g)	5 oz (142g)	3.31 oz (94g)	4.4 oz (125g)	5.11 oz (145g)
Dimensions	4.74" x 2.48" x 0.4" (121 x 63 x 10.3 mm)	4.4" x 2.3" x 0.7" (112 x 58 x 17.8 mm)	4.07" x 2.15" x 0.55" (103 x 55 x 14 mm)	3.8" x 1.88" x 0.82" (97 x 48 x 20.8 mm)	5.56" x 2.84" x 0.35" (141 x 72 x 8.9 mm)
Form Factor	Slab	Slab	Clamshell	Clamshell	Slab
Platform / OS	Windows	Windows Mobile Professional	(proprietary)	(proprietary)	Windows
Network Bands	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900	WCDMA: 2, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900	4G LTE: 1, 2, 4, 5, 7, 12, 17, 28 WCDMA: 1, 2, 4, 5 GSM: 850, 900, 1800, 1900 *
Data Technology	HSPA+ 21	EVDO rA	HSDPA 1.8	EVDO r0	LTE (Cat 4)
Features
Flashlight	Yes	-	-	Yes	-
GPS / Location	n/a	n/a	-	Yes	n/a
Accessibility
Adjustable Text Size	n/a	n/a	-	-	n/a
Hearing Aid Compatible	Yes M3, T3 (mostly tele-coil compatible)	Yes M4, T4 (very tele-coil compatible)	Yes M3 (mostly compatible)	Yes M3 (mostly compatible)	Yes M3, T4 (very tele-coil compatible)
Multiple Languages	n/a	n/a	Yes	Yes	n/a
TTY/TDD (Digital)	Yes	Yes	Yes	Yes	Yes
Alerts
Extra Display	-	-	Yes	Yes	-
Ringer Profiles	-	-	Yes	-	-
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	Yes
Infrared (IR)	-	Yes	-	-	-
Mobile Hotspot	n/a	n/a	-	-	n/a
NFC	-	-	-	-	Yes
USB	Yes	Yes Micro-USB	Yes	Yes	Yes Micro-USB
Wi-Fi	Yes 4 (802.11 b,g,n)	Yes 802.11 b,g	-	-	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	n/a	n/a	Yes	Yes	n/a
Ringer ID	n/a	n/a	Yes	Yes	n/a
Voice Dialing	n/a	n/a	-	Yes	n/a
Customization
Custom Graphics	n/a	n/a	Yes	Yes	n/a
Custom Ringtones	n/a	n/a	Yes	Yes	n/a
Real-Music Ringers	n/a	n/a	Yes	Yes	n/a
Data & Network
Data Tethering	n/a	n/a	Yes	Yes	n/a
External Antenna Jack	n/a	n/a	-	-	n/a
WAP / Web Browser	n/a	n/a	Yes	Yes	n/a
Input
Predictive Text Entry	n/a	n/a	Yes	Yes	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Stylus	-	Yes	-	-	-
Text Keyboard, Hardware	-	Yes	-	-	-
Touch Screen	Yes Capacitive	Yes Resistive	-	-	Yes Capacitive
Memory
Memory Card Slot	Yes	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	Yes	n/a
Text Messaging Templates	n/a	n/a	Yes	Yes	n/a
Music
FM Radio	-	-	-	-	Yes
Headphone Jack (3.5mm)	Yes	-	-	-	Yes
Music Player	n/a	n/a	Yes	Yes	n/a
Stereo Speakers	-	-	-	Yes	-
Photo & Video
DLNA	-	-	-	-	Yes
Miracast	-	-	-	-	Yes
TV Output	-	-	-	Yes	-
Productivity
Alarm	n/a	n/a	Yes	Yes	n/a
Calculator	n/a	n/a	Yes	Yes	n/a
Calendar	n/a	n/a	Yes	Yes	n/a
To-Do List	n/a	n/a	Yes	-	n/a
Voice Memo	n/a	n/a	Yes	Yes	n/a
Software
BREW	n/a	n/a	-	Yes	n/a
Games	n/a	n/a	Yes	Yes	n/a
Java (J2ME)	n/a	n/a	Yes	-	n/a
Voice
HD Voice	-	-	-	-	Yes
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	HTC Windows Phone 8S	Palm Treo 800w	Samsung SGH-A717	Samsung SCH-A990	Microsoft Lumia 640
	X >	< X >	< X >	< X >	< X

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


Phone	HTC Windows Phone 8S	Palm Treo 800w	Samsung SGH-A717	Samsung SCH-A990	Microsoft Lumia 640