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Phone	HTC Touch Pro2 (CDMA)	Huawei Vitria	Apple iPhone 4 (GSM)	Motorola i830 / i833 / i835 / i836	Siemens SX66 / MDA III / PDA2K (HTC Blue Angel)
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	3.6" diag. 5 : 3	4" diag. 5 : 3	3.5" diag. 5 : 3	?	?
Display Resolution & Type	480 x 800 pixels (~259 ppi) LCD (TFT/TFD)	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	640 x 960 pixels (~330 ppi) LCD (TFT/TFD)	130 x 130 pixels LCD (TFT/TFD)	240 x 320 pixels LCD (TFT/TFD)
Display Refresh	?	60 Hz	60 Hz	?	?
Battery	1,500 mAh	1,750 mAh	?	?	1,490 mAh
Processor	528 MHz MSM7600	1.2 GHz Qualcomm Snapdragon 400 MSM8930	Apple A4	?	400 MHz Intel XScale
RAM	?	1 GB	?	?	?
Storage	? raw hardware	4 GB	32 GB *	? raw hardware	? raw hardware
Main Camera	3 megapixel	5 megapixel	5 megapixel	-	Yes
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	?	720p HD	720p HD	-	QCIF (176 x 144)
Front Camera	-	Yes	Yes	-	-
Weight	6.35 oz (180g)	4.94 oz (140g)	4.8 oz (136g)	3.94 oz (112g)	7.41 oz (210g)
Dimensions	4.57" x 2.33" x 0.68" (116 x 59 x 17.3 mm)	4.99" x 2.51" x 0.46" (127 x 64 x 11.7 mm)	4.5" x 2.31" x 0.37" (114 x 59 x 9.4 mm)	3.35" x 1.77" x 0.79" (85 x 45 x 20.1 mm)	4.92" x 2.83" x 0.75" (125 x 72 x 19.1 mm)
Form Factor	Slab	Slab	Slab	Clamshell	Slide
Platform / OS	Windows Mobile Professional	Android	iOS	(proprietary)	Windows Mobile Professional
Network Bands	WCDMA: 1 CDMA: 850, 1900 GSM: 850, 900, 1800, 1900	4G LTE: 4 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900	WCDMA: 1, 2, 5, 8 GSM: 850, 900, 1800, 1900	iDEN: 800	GSM: 850, 900, 1800, 1900
Data Technology	EVDO rA	LTE (Cat 3)	HSPA 7.2	-	GPRS
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 M3, T3 (mostly tele-coil compatible)	Yes M3, T3 (mostly tele-coil compatible)	Yes M3 (mostly compatible)	-
Multiple Languages	n/a	n/a	n/a	Yes	n/a
TTY/TDD (Digital)	Yes	Yes	Yes	Yes	-
Alerts
Extra Display	-	-	-	Yes	-
Ringer Profiles	-	-	-	Yes	-
Connectivity
Bluetooth	Yes	Yes	Yes	-	Yes
Infrared (IR)	-	-	-	-	Yes
Mobile Hotspot	n/a	n/a	n/a	-	n/a
USB	Yes	Yes Micro-USB	Yes	Yes	Yes
Wi-Fi	Yes	Yes 4 (802.11 b,g,n)	Yes 4 (802.11 b,g,n)	-	Yes
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
Stylus	Yes	-	-	-	-
Text Keyboard, Hardware	Yes	-	-	-	Yes
Touch Screen	Yes Resistive	Yes Capacitive	Yes Capacitive	-	Yes
Memory
Memory Card Slot	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	Yes	n/a
Text Messaging Templates	n/a	n/a	n/a	-	n/a
Music
FM Radio	-	Yes	-	-	-
Headphone Jack (3.5mm)	Yes	Yes	Yes	-	-
Music Player	n/a	n/a	n/a	-	n/a
Photo & Video
DLNA	-	Yes	-	-	-
TV Output	Yes	-	Yes	-	-
Productivity
Alarm	n/a	n/a	n/a	-	n/a
Calculator	n/a	n/a	n/a	-	n/a
Calendar	n/a	n/a	n/a	Yes	n/a
To-Do List	n/a	n/a	n/a	-	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
Push-To-Talk	-	-	-	Yes	-
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	HTC Touch Pro2 (CDMA)	Huawei Vitria	Apple iPhone 4 (GSM)	Motorola i830 / i833 / i835 / i836	Siemens SX66 / MDA III / PDA2K (HTC Blue Angel)
	X >	< X >	< X >	< X >	< X

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


Phone	HTC Touch Pro2 (CDMA)	Huawei Vitria	Apple iPhone 4 (GSM)	Motorola i830 / i833 / i835 / i836	Siemens SX66 / MDA III / PDA2K (HTC Blue Angel)