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Phone	LG VX-8500 Chocolate	Samsung Stratosphere / Galaxy Metrix 4G	AT&T Calypso	ZTE Z431 / Altair	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	?	4" diag. 5 : 3	5.5" diag. 18 : 9	2.4" diag. 4 : 3	?
Display Resolution & Type	240 x 320 pixels LCD (TFT/TFD)	480 x 800 pixels (~233 ppi) AMOLED	480 x 960 pixels (~195 ppi) LCD (TFT/TFD)	320 x 240 pixels (~167 ppi) LCD (TFT/TFD)	240 x 320 pixels LCD (TFT/TFD)
Display Refresh	?	60 Hz	60 Hz	?	?
Battery	800 mAh	?	2,500 mAh	1,000 mAh	1,490 mAh
Processor	?	1 GHz Samsung Cortex A8 Hummingbird	1.5 GHz MediaTek MT6739	?	400 MHz Intel XScale
RAM	?	?	1 GB	?	?
Storage	? raw hardware	? raw hardware	16 GB	? raw hardware	? raw hardware
Main Camera	1 megapixel	5 megapixel	5 megapixel	2 megapixel	Yes
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	QCIF (176 x 144)	WVGA / 480p	1080p HD	QVGA (320 x 240)	QCIF (176 x 144)
Front Camera	-	1 megapixel	5 megapixel	-	-
Weight	3.53 oz (100g)	5.8 oz (164g)	6 oz (170g)	3.52 oz (100g)	7.41 oz (210g)
Dimensions	3.8" x 1.88" x 0.69" (97 x 48 x 17.5 mm)	4.96" x 2.54" x 0.55" (126 x 65 x 14 mm)	5.91" x 2.87" x 0.39" (150 x 73 x 9.9 mm)	4.49" x 2.39" x 0.41" (114 x 61 x 10.4 mm)	4.92" x 2.83" x 0.75" (125 x 72 x 19.1 mm)
Form Factor	Slide	Slide	Slab	Slab	Slide
Platform / OS	(proprietary)	Android	Android	(proprietary)	Windows Mobile Professional
Network Bands	CDMA: 850, 1900	4G LTE: 13 CDMA: 850, 1900 *	4G LTE: 2, 4, 5, 12, 14, 30 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	GSM: 850, 900, 1800, 1900
Data Technology	EVDO r0	LTE (Cat 3)	LTE (Cat 4)	?	GPRS
Features
Flashlight	-	-	Yes	-	-
GPS / Location	Yes	n/a	n/a	Yes	n/a
Accessibility
Hearing Aid Compatible	Yes M3 (mostly compatible)	Yes M4 (very compatible)	Yes M3, T4 (very tele-coil compatible)	Yes M3, T3 (mostly tele-coil compatible)	-
Multiple Languages	Yes	n/a	n/a	Yes	n/a
TTY/TDD (Digital)	Yes	Yes	Yes	Yes	-
Alerts
Ringer Profiles	-	-	-	Yes	-
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	Yes
Infrared (IR)	-	-	-	-	Yes
Mobile Hotspot	-	n/a	n/a	-	n/a
USB	-	Yes	Yes USB Type C	Yes Micro-USB	Yes
Wi-Fi	-	Yes 4 (802.11 a,b,g,n)	Yes 4 (802.11 b,g,n)	-	Yes
Contacts
Picture ID	Yes	n/a	n/a	Yes	n/a
Ringer ID	Yes	n/a	n/a	Yes	n/a
Voice Dialing	Yes	n/a	n/a	-	n/a
Customization
Custom Graphics	Yes	n/a	n/a	Yes	n/a
Custom Ringtones	Yes	n/a	n/a	Yes	n/a
Real-Music Ringers	Yes	n/a	n/a	Yes	n/a
Data & Network
Data Tethering	Yes	n/a	n/a	Yes	n/a
External Antenna Jack	Yes	n/a	n/a	-	n/a
WAP / Web Browser	Yes	n/a	n/a	Yes	n/a
Input
Predictive Text Entry	Yes	n/a	n/a	Yes	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	Yes	-	Yes	Yes
Touch Screen	-	Yes Capacitive	Yes Capacitive	-	Yes
Memory
Memory Card Slot	Yes	Yes	Yes	Yes	Yes
Messaging
Email Client	-	n/a	n/a	Yes	n/a
Instant Messaging	-	n/a	n/a	-	n/a
MMS	Yes	n/a	n/a	Yes	n/a
Text Messaging Templates	Yes	n/a	n/a	Yes	n/a
Music
Headphone Jack (3.5mm)	-	Yes	Yes	Yes	-
Music Player	Yes	n/a	n/a	Yes	n/a
Photo & Video
DLNA	-	Yes	-	-	-
Productivity
Alarm	Yes	n/a	n/a	Yes	n/a
Calculator	Yes	n/a	n/a	Yes	n/a
Calendar	Yes	n/a	n/a	Yes	n/a
To-Do List	-	n/a	n/a	-	n/a
Voice Memo	Yes	n/a	n/a	Yes	n/a
Software
BREW	Yes	n/a	n/a	Yes	n/a
Games	Yes	n/a	n/a	Yes	n/a
Java (J2ME)	-	n/a	n/a	-	n/a
Voice
HD Voice	-	-	Yes	-	-
Headset Jack (2.5 mm)	-	n/a	n/a	-	n/a
Speaker Phone	Yes *	Yes	Yes	Yes	Yes
	* Some versions only
	LG VX-8500 Chocolate	Samsung Stratosphere / Galaxy Metrix 4G	AT&T Calypso	ZTE Z431 / Altair	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	LG VX-8500 Chocolate	Samsung Stratosphere / Galaxy Metrix 4G	AT&T Calypso	ZTE Z431 / Altair	Siemens SX66 / MDA III / PDA2K (HTC Blue Angel)