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Phone	AT&T Calypso	Siemens SX66 / MDA III / PDA2K (HTC Blue Angel)	Samsung Stratosphere / Galaxy Metrix 4G	ZTE Z431 / Altair	LG VX-8300
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	5.5" diag. 18 : 9	?	4" diag. 5 : 3	2.4" diag. 4 : 3	?
Display Resolution & Type	480 x 960 pixels (~195 ppi) LCD (TFT/TFD)	240 x 320 pixels LCD (TFT/TFD)	480 x 800 pixels (~233 ppi) AMOLED	320 x 240 pixels (~167 ppi) LCD (TFT/TFD)	176 x 220 pixels LCD (TFT/TFD)
Display Refresh	60 Hz	?	60 Hz	?	?
Battery	2,500 mAh	1,490 mAh	?	1,000 mAh	1,100 mAh
Processor	1.5 GHz MediaTek MT6739	400 MHz Intel XScale	1 GHz Samsung Cortex A8 Hummingbird	?	?
RAM	1 GB	?	?	?	?
Storage	16 GB	? raw hardware	? raw hardware	? raw hardware	? raw hardware
Main Camera	5 megapixel	Yes	5 megapixel	2 megapixel	1 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	1080p HD	QCIF (176 x 144)	WVGA / 480p	QVGA (320 x 240)	QCIF (176 x 144)
Front Camera	5 megapixel	-	1 megapixel	-	-
Weight	6 oz (170g)	7.41 oz (210g)	5.8 oz (164g)	3.52 oz (100g)	3.88 oz (110g)
Dimensions	5.91" x 2.87" x 0.39" (150 x 73 x 9.9 mm)	4.92" x 2.83" x 0.75" (125 x 72 x 19.1 mm)	4.96" x 2.54" x 0.55" (126 x 65 x 14 mm)	4.49" x 2.39" x 0.41" (114 x 61 x 10.4 mm)	3.58" x 1.93" x 0.92" (91 x 49 x 23.4 mm)
Form Factor	Slab	Slide	Slide	Slab	Clamshell
Platform / OS	Android	Windows Mobile Professional	Android	(proprietary)	(proprietary)
Network Bands	4G LTE: 2, 4, 5, 12, 14, 30 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900	GSM: 850, 900, 1800, 1900	4G LTE: 13 CDMA: 850, 1900 *	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900
Data Technology	LTE (Cat 4)	GPRS	LTE (Cat 3)	?	EVDO r0
Features
Flashlight	Yes	-	-	-	-
GPS / Location	n/a	n/a	n/a	Yes	Yes
Accessibility
Hearing Aid Compatible	Yes M3, T4 (very tele-coil compatible)	-	Yes M4 (very compatible)	Yes M3, T3 (mostly tele-coil compatible)	Yes M3 (mostly compatible)
Multiple Languages	n/a	n/a	n/a	Yes	Yes
TTY/TDD (Digital)	Yes	-	Yes	Yes	Yes
Alerts
Extra Display	-	-	-	-	Yes
Ringer Profiles	-	-	-	Yes	-
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	Yes
Infrared (IR)	-	Yes	-	-	-
Mobile Hotspot	n/a	n/a	n/a	-	-
USB	Yes USB Type C	Yes	Yes	Yes Micro-USB	Yes
Wi-Fi	Yes 4 (802.11 b,g,n)	Yes	Yes 4 (802.11 a,b,g,n)	-	-
Contacts
Picture ID	n/a	n/a	n/a	Yes	Yes
Ringer ID	n/a	n/a	n/a	Yes	Yes
Voice Dialing	n/a	n/a	n/a	-	Yes
Customization
Custom Graphics	n/a	n/a	n/a	Yes	Yes
Custom Ringtones	n/a	n/a	n/a	Yes	Yes
Real-Music Ringers	n/a	n/a	n/a	Yes	Yes
Data & Network
Data Tethering	n/a	n/a	n/a	Yes	Yes
WAP / Web Browser	n/a	n/a	n/a	Yes	Yes
Input
Predictive Text Entry	n/a	n/a	n/a	Yes	Yes
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	Yes	Yes	Yes	-
Touch Screen	Yes Capacitive	Yes	Yes Capacitive	-	-
Memory
Memory Card Slot	Yes	Yes	Yes	Yes	Yes
Messaging
Email Client	n/a	n/a	n/a	Yes	-
Instant Messaging	n/a	n/a	n/a	-	Yes
MMS	n/a	n/a	n/a	Yes	Yes
Text Messaging Templates	n/a	n/a	n/a	Yes	Yes
Music
Headphone Jack (3.5mm)	Yes	-	Yes	Yes	-
Music Player	n/a	n/a	n/a	Yes	Yes
Stereo Speakers	-	-	-	-	Yes
Photo & Video
DLNA	-	-	Yes	-	-
Productivity
Alarm	n/a	n/a	n/a	Yes	Yes
Calculator	n/a	n/a	n/a	Yes	Yes
Calendar	n/a	n/a	n/a	Yes	Yes
To-Do List	n/a	n/a	n/a	-	-
Voice Memo	n/a	n/a	n/a	Yes	Yes
Software
BREW	n/a	n/a	n/a	Yes	Yes
Games	n/a	n/a	n/a	Yes	Yes
Java (J2ME)	n/a	n/a	n/a	-	-
Voice
HD Voice	Yes	-	-	-	-
Headset Jack (2.5 mm)	n/a	n/a	n/a	-	Yes
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	AT&T Calypso	Siemens SX66 / MDA III / PDA2K (HTC Blue Angel)	Samsung Stratosphere / Galaxy Metrix 4G	ZTE Z431 / Altair	LG VX-8300
	X >	< X >	< X >	< X >	< X

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


Phone	AT&T Calypso	Siemens SX66 / MDA III / PDA2K (HTC Blue Angel)	Samsung Stratosphere / Galaxy Metrix 4G	ZTE Z431 / Altair	LG VX-8300