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Phone	HTC SDA (USA) / SP5m (Tornado)	Samsung SCH-A610	Samsung Galaxy S 4 (GSM)	Huawei W1	Samsung SGH-X640
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	2.2" diag. 4 : 3	?	5" diag. 16 : 9	4" diag. 5 : 3	?
Display Resolution & Type	240 x 320 pixels (~182 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (TFT/TFD)	1080 x 1920 pixels (~441 ppi) AMOLED	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	?	?
Battery	?	1,300 mAh	2,600 mAh	1,950 mAh	800 mAh
Processor	?	?	1.9 GHz Qualcomm Snapdragon 600 8064T	1.2 GHz Qualcomm Snapdragon 400 MSM8230	?
RAM	?	?	2 GB	512 MB	?
Storage	? raw hardware	? raw hardware	16 GB *	4 GB	? raw hardware
Main Camera	1 megapixel	Yes	13 megapixel	5 megapixel	Yes
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	QCIF (176 x 144)	-	1080p HD	720p HD	-
Front Camera	-	-	2 megapixel	Yes	-
Weight	3.74 oz (106g)	4.23 oz (120g)	4.59 oz (130g)	4.41 oz (125g)	3 oz (85g)
Dimensions	4.53" x 1.82" x 0.69" (115 x 46 x 17.5 mm)	3.5" x 1.9" x 0.9" (89 x 48 x 22.9 mm)	5.38" x 2.75" x 0.31" (137 x 70 x 7.9 mm)	4.84" x 2.5" x 0.41" (123 x 64 x 10.4 mm)	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)
Form Factor	Slab	Clamshell	Slab	Slab	Clamshell
Platform / OS	Windows Mobile Standard	(proprietary)	Android	Windows	(proprietary)
Network Bands	GSM: 850, 900, 1800, 1900	CDMA: 850, 1900	4G LTE: 2, 4, 5, 17 WCDMA: 1, 2, 4, 5 GSM: 850, 900, 1800, 1900 *	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900	GSM: 900, 1800, 1900
Data Technology	EDGE	1xRTT	LTE (Cat 3)	HSPA+ 21	GPRS
Features
Flashlight	-	-	Yes	-	-
GPS / Location	n/a	Yes	n/a	n/a	-
Accessibility
Adjustable Text Size	n/a	-	n/a	n/a	-
Hearing Aid Compatible	-	-	Yes M3 (mostly compatible)	Yes M3 (mostly compatible)	-
Multiple Languages	n/a	Yes	n/a	n/a	Yes
TTY/TDD (Digital)	Yes	-	Yes	-	-
Alerts
Ringer Profiles	Yes	-	-	-	-
Connectivity
Bluetooth	Yes	-	Yes	Yes	-
Infrared (IR)	Yes	-	Yes	-	-
Mobile Hotspot	n/a	-	n/a	n/a	-
NFC	-	-	Yes	-	-
USB	Yes Mini-USB	-	Yes	Yes Micro-USB	-
Wi-Fi	Yes	-	Yes 5 (802.11 a,ac,b,g,n)	Yes 4 (802.11 b,g,n)	-
Contacts
Picture ID	n/a	Yes	n/a	n/a	Yes
Ringer ID	n/a	Yes	n/a	n/a	Yes
Voice Dialing	n/a	Yes	n/a	n/a	-
Customization
Custom Graphics	n/a	Yes	n/a	n/a	Yes
Custom Ringtones	n/a	Yes	n/a	n/a	Yes
Real-Music Ringers	n/a	-	n/a	n/a	-
Data & Network
Data Tethering	n/a	Yes	n/a	n/a	-
External Antenna Jack	n/a	-	n/a	n/a	-
WAP / Web Browser	n/a	Yes	n/a	n/a	Yes
Input
Predictive Text Entry	n/a	Yes	n/a	n/a	Yes
Side Keys	Yes	Yes	Yes	Yes	Yes
Touch Screen	-	-	Yes Capacitive	Yes Capacitive	-
Memory
Memory Card Slot	Yes	-	Yes	Yes	-
Messaging
Email Client	n/a	-	n/a	n/a	-
EMS / Picture Messaging	n/a	Yes	n/a	n/a	Yes
Instant Messaging	n/a	-	n/a	n/a	-
MMS	n/a	Yes	n/a	n/a	Yes
Text Messaging Templates	n/a	Yes	n/a	n/a	Yes
Music
Headphone Jack (3.5mm)	-	-	Yes	Yes	-
Music Player	n/a	-	n/a	n/a	-
Photo & Video
DLNA	-	-	Yes	-	-
Miracast	-	-	Yes	-	-
TV Output	-	-	Yes	-	-
Productivity
Alarm	n/a	Yes	n/a	n/a	Yes
Calculator	n/a	Yes	n/a	n/a	Yes
Calendar	n/a	Yes	n/a	n/a	Yes
To-Do List	n/a	Yes	n/a	n/a	Yes
Voice Memo	n/a	Yes	n/a	n/a	Yes
Software
BREW	n/a	Yes	n/a	n/a	-
Games	n/a	Yes	n/a	n/a	Yes
Java (J2ME)	n/a	-	n/a	n/a	Yes
Voice
Headset Jack (2.5 mm)	n/a	Yes	n/a	n/a	Yes
Speaker Phone	Yes	-	Yes	Yes	Yes
	* Some versions only
	HTC SDA (USA) / SP5m (Tornado)	Samsung SCH-A610	Samsung Galaxy S 4 (GSM)	Huawei W1	Samsung SGH-X640
	X >	< X >	< X >	< X >	< X

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


Phone	HTC SDA (USA) / SP5m (Tornado)	Samsung SCH-A610	Samsung Galaxy S 4 (GSM)	Huawei W1	Samsung SGH-X640