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Phone	HTC MDA Compact / xda II mini / JAM (Magician)	Motorola Charm	LG Nexus 4	Cal-Comp EZ	Apple iPhone 4 (GSM)
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	2.8" diag. 4 : 3	4.7" diag. 5 : 3	?	3.5" diag. 5 : 3
Display Resolution & Type	240 x 320 pixels LCD (TFT/TFD)	320 x 240 pixels (~143 ppi) LCD (TFT/TFD)	768 x 1280 pixels (~318 ppi) LCD (TFT/TFD)	128 x 128 pixels LCD (STN)	640 x 960 pixels (~330 ppi) LCD (TFT/TFD)
Display Refresh	?	60 Hz	60 Hz	?	60 Hz
Battery	1,200 mAh	1,170 mAh	2,100 mAh	800 mAh	?
Processor	416 MHz Intel xScale	720 MHz TI OMAP3410	1.5 GHz Qualcomm Snapdragon S4 Pro	?	Apple A4
RAM	?	?	2 GB	?	?
Storage	? raw hardware	? raw hardware	16 GB *	? raw hardware	32 GB *
Main Camera	1 megapixel	3 megapixel	8 megapixel	-	5 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	?	?	1080p HD	-	720p HD
Front Camera	-	-	1 megapixel	-	Yes
Weight	5.29 oz (150g)	3.88 oz (110g)	4.9 oz (139g)	2.47 oz (70g)	4.8 oz (136g)
Dimensions	4.25" x 2.28" x 0.72" (108 x 58 x 18.3 mm)	3.87" x 2.65" x 0.45" (98 x 67 x 11.4 mm)	5.27" x 2.7" x 0.36" (134 x 69 x 9.1 mm)	4.04" x 1.71" x 0.63" (103 x 43 x 16 mm)	4.5" x 2.31" x 0.37" (114 x 59 x 9.4 mm)
Form Factor	Slab	Slab	Slab	Slab	Slab
Platform / OS	Windows Mobile Professional	Android	Android	(proprietary)	iOS
Network Bands	GSM: 850, 1800, 1900 *	WCDMA: 4 GSM: 850, 900, 1800, 1900 *	WCDMA: 1, 2, 4, 5, 8 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900	WCDMA: 1, 2, 5, 8 GSM: 850, 900, 1800, 1900
Data Technology	GPRS	HSDPA 3.6	HSPA+ 42	1xRTT	HSPA 7.2
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 M3 (mostly compatible)	-	Yes M3, T3 (mostly tele-coil compatible)
Multiple Languages	n/a	n/a	n/a	Yes	n/a
TTY/TDD (Digital)	-	Yes	Yes	-	Yes
Connectivity
Bluetooth	Yes	Yes	Yes	-	Yes
Infrared (IR)	Yes	-	-	-	-
Mobile Hotspot	n/a	n/a	n/a	-	n/a
NFC	-	-	Yes	-	-
USB	Yes Mini-USB	Yes Micro-USB	Yes Micro-USB	Yes Mini-USB	Yes
Wi-Fi	-	Yes 4 (802.11 b,g,n)	Yes 4 (802.11 b,g,n)	-	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	n/a	n/a	n/a	-	n/a
Ringer ID	n/a	n/a	n/a	-	n/a
Voice Dialing	n/a	n/a	n/a	-	n/a
Customization
Custom Graphics	n/a	n/a	n/a	-	n/a
Custom Ringtones	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
WAP / Web Browser	n/a	n/a	n/a	-	n/a
Input
Predictive Text Entry	n/a	n/a	n/a	-	n/a
Side Keys	Yes	Yes	Yes	-	Yes
Text Keyboard, Hardware	-	Yes	-	-	-
Touch Screen	Yes	Yes Capacitive	Yes Capacitive	-	Yes Capacitive
Memory
Memory Card Slot	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
Headphone Jack (3.5mm)	-	Yes	Yes	-	Yes
Music Player	n/a	n/a	n/a	-	n/a
Photo & Video
TV Output	-	-	Yes	-	Yes
Power
Wireless Charging	-	-	Yes	-	-
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	-	n/a
Voice
Headset Jack (2.5 mm)	n/a	n/a	n/a	Yes	n/a
Speaker Phone	Yes	Yes	Yes	-	Yes
	* Some versions only
	HTC MDA Compact / xda II mini / JAM (Magician)	Motorola Charm	LG Nexus 4	Cal-Comp EZ	Apple iPhone 4 (GSM)
	X >	< X >	< X >	< X >	< X

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


Phone	HTC MDA Compact / xda II mini / JAM (Magician)	Motorola Charm	LG Nexus 4	Cal-Comp EZ	Apple iPhone 4 (GSM)