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Phone	Samsung SCH-A990	ZTE Engage LT / Engage MT	ZTE Blade Z Max	HTC EVO Design 4G / Hero S (CDMA)	LG VX-8550 Chocolate
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	4" diag. 5 : 3	6" diag. 16 : 9	4" diag. 16 : 9	?
Display Resolution & Type	240 x 320 pixels LCD (TFT/TFD)	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	1080 x 1920 pixels (~367 ppi) LCD (TFT/TFD)	540 x 960 pixels (~275 ppi) LCD (TFT/TFD)	240 x 320 pixels LCD (TFT/TFD)
Display Refresh	?	60 Hz	60 Hz	60 Hz	?
Battery	1,000 mAh	1,900 mAh	4,080 mAh	1,520 mAh	800 mAh
Processor	?	?	1.4 GHz Qualcomm Snapdragon 435 (MSM8940)	1.2 GHz Qualcomm Snapdragon S2 MSM8655	?
RAM	?	1 GB	2 GB	768 MB	?
Storage	? raw hardware	4 GB	32 GB	4 GB	? raw hardware
Main Camera	3 megapixel	3 megapixel	16 megapixel	5 megapixel	1 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	?	WVGA / 480p	1080p HD	720p HD	QCIF (176 x 144)
Front Camera	-	Yes	8 megapixel	1 megapixel	-
Weight	4.4 oz (125g)	5.09 oz (144g)	6.58 oz (186g)	5.22 oz (148g)	3.24 oz (92g)
Dimensions	3.8" x 1.88" x 0.82" (97 x 48 x 20.8 mm)	4.78" x 2.54" x 0.46" (121 x 64 x 11.7 mm)	6.51" x 3.28" x 0.33" (165 x 83 x 8.3 mm)	4.78" x 2.44" x 0.46" (122 x 62 x 11.8 mm)	3.85" x 1.87" x 0.67" (98 x 47 x 17 mm)
Form Factor	Clamshell	Slab	Slab	Slab	Slide
Platform / OS	(proprietary)	Android	Android	Android	(proprietary)
Network Bands	CDMA: 850, 1900	CDMA: 850, 1700, 1900	4G LTE: 2, 4, 5, 12, 66 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900	4G WiMAX: 41 WCDMA: 1, 8 CDMA: 800, 850, 1900 GSM: 850, 1900 *	CDMA: 850, 1900
Data Technology	EVDO r0	EVDO rA	LTE (Cat 6)	WiMAX	EVDO r0
Features
Fingerprint Reader	-	-	Yes stand-alone	-	-
Flashlight	Yes	-	Yes	Yes	-
GPS / Location	Yes	n/a	n/a	n/a	Yes
Accessibility
Adjustable Text Size	-	n/a	n/a	n/a	-
Hearing Aid Compatible	Yes M3 (mostly compatible)	-	Yes M4, T3 (mostly tele-coil compatible)	Yes M4, T4 (very tele-coil compatible)	Yes M4 (very compatible)
Multiple Languages	Yes	n/a	n/a	n/a	Yes
TTY/TDD (Digital)	Yes	Yes	Yes	Yes	Yes
Alerts
Extra Display	Yes	-	-	-	-
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	Yes
Mobile Hotspot	-	n/a	n/a	n/a	-
USB	Yes	Yes Micro-USB	Yes USB Type C	Yes Micro-USB	Yes
Wi-Fi	-	Yes	Yes 4 (802.11 b,g,n)	Yes 4 (802.11 b,g,n)	-
Contacts
Picture ID	Yes	n/a	n/a	n/a	Yes
Ringer ID	Yes	n/a	n/a	n/a	Yes
Voice Dialing	Yes	n/a	n/a	n/a	Yes
Customization
Custom Graphics	Yes	n/a	n/a	n/a	Yes
Custom Ringtones	Yes	n/a	n/a	n/a	Yes
Real-Music Ringers	Yes	n/a	n/a	n/a	Yes
Data & Network
Data Tethering	Yes	n/a	n/a	n/a	Yes
WAP / Web Browser	Yes	n/a	n/a	n/a	Yes
Input
Predictive Text Entry	Yes	n/a	n/a	n/a	Yes
Side Keys	Yes	Yes	Yes	Yes	Yes
Touch Screen	-	Yes Capacitive	Yes Capacitive	Yes Capacitive	-
Memory
Memory Card Slot	Yes	Yes	Yes	Yes	Yes
Messaging
Email Client	-	n/a	n/a	n/a	-
EMS / Picture Messaging	Yes	n/a	n/a	n/a	-
Instant Messaging	-	n/a	n/a	n/a	-
MMS	Yes	n/a	n/a	n/a	Yes
Text Messaging Templates	Yes	n/a	n/a	n/a	Yes
Music
FM Radio	-	-	Yes	Yes	-
Headphone Jack (3.5mm)	-	Yes	Yes	Yes	-
Music Player	Yes	n/a	n/a	n/a	Yes
Stereo Speakers	Yes	-	-	-	-
Photo & Video
DLNA	-	-	-	Yes	-
TV Output	Yes	-	-	-	-
Power
Fast Charging	-	-	Yes	-	-
Productivity
Alarm	Yes	n/a	n/a	n/a	Yes
Calculator	Yes	n/a	n/a	n/a	Yes
Calendar	Yes	n/a	n/a	n/a	Yes
Voice Memo	Yes	n/a	n/a	n/a	Yes
Software
BREW	Yes	n/a	n/a	n/a	Yes
Games	Yes	n/a	n/a	n/a	Yes
Voice
HD Voice	-	-	Yes	-	-
Headset Jack (2.5 mm)	-	n/a	n/a	n/a	Yes
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	Samsung SCH-A990	ZTE Engage LT / Engage MT	ZTE Blade Z Max	HTC EVO Design 4G / Hero S (CDMA)	LG VX-8550 Chocolate
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NOTE: Differences are highlighted with bold / black text for visual clarity only.


Phone	Samsung SCH-A990	ZTE Engage LT / Engage MT	ZTE Blade Z Max	HTC EVO Design 4G / Hero S (CDMA)	LG VX-8550 Chocolate