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Phone	Samsung SCH-A990	HTC Droid Eris	ZTE Blade Max 3 / Max Blue	ZTE Blade Vantage	Samsung SGH-X640
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	3.2" diag. 5 : 3	6" diag. 16 : 9	5" diag. 16 : 9	?
Display Resolution & Type	240 x 320 pixels LCD (TFT/TFD)	320 x 480 pixels (~180 ppi) LCD (TFT/TFD)	1080 x 1920 pixels (~367 ppi) LCD (TFT/TFD)	480 x 854 pixels (~196 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (TFT/TFD)
Display Refresh	?	60 Hz	60 Hz	60 Hz	?
Battery	1,000 mAh	1,300 mAh	4,000 mAh	2,500 mAh	800 mAh
Processor	?	528 MHz MSM7600	2 GHz Qualcomm Snapdragon 625 (MSM8953)	1.1 GHz Qualcomm Snapdragon 210 (MSM8909)	?
RAM	?	?	2 GB	2 GB	?
Storage	? raw hardware	? raw hardware	16 GB	16 GB	? raw hardware
Main Camera	3 megapixel	5 megapixel	13 megapixel	8 megapixel	Yes
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	?	CIF (352 x 288)	4K UHD	720p HD	-
Front Camera	-	-	5 megapixel	2 megapixel	-
Weight	4.4 oz (125g)	4.43 oz (126g)	6.34 oz (180g)	5.29 oz (150g)	3 oz (85g)
Dimensions	3.8" x 1.88" x 0.82" (97 x 48 x 20.8 mm)	4.45" x 2.19" x 0.52" (113 x 55 x 13.2 mm)	6.49" x 3.3" x 0.35" (165 x 84 x 8.9 mm)	5.73" x 2.85" x 0.36" (146 x 72 x 9.2 mm)	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)
Form Factor	Clamshell	Slab	Slab	Slab	Clamshell
Platform / OS	(proprietary)	Android	Android	Android	(proprietary)
Network Bands	CDMA: 850, 1900	CDMA: 850, 1900	4G LTE: 2, 4, 5, 12, 13, 25 WCDMA: 2, 4, 5 CDMA: 850, 1900 GSM: 850, 900, 1800, 1900	4G LTE: 2, 4, 5, 13	GSM: 900, 1800, 1900
Data Technology	EVDO r0	EVDO rA	LTE (Cat 4)	LTE (Cat 4)	GPRS
Features
Fingerprint Reader	-	-	Yes stand-alone	-	-
Flashlight	Yes	-	Yes	Yes	-
GPS / Location	Yes	n/a	n/a	n/a	-
Accessibility
Hearing Aid Compatible	Yes M3 (mostly compatible)	Yes M3, T3 (mostly tele-coil compatible)	Yes M4, T3 (mostly tele-coil compatible)	Yes M4, T4 (very tele-coil compatible)	-
Multiple Languages	Yes	n/a	n/a	n/a	Yes
TTY/TDD (Digital)	Yes	Yes	Yes	Yes	-
Alerts
Extra Display	Yes	-	-	-	-
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	-
USB	Yes	Yes Mini-USB	Yes USB Type C	Yes Micro-USB	-
Wi-Fi	-	Yes 802.11 b,g	Yes 5 (802.11 ac,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	-
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	-
Data & Network
Data Tethering	Yes	n/a	n/a	n/a	-
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	-
Messaging
Email Client	-	n/a	n/a	n/a	-
EMS / Picture Messaging	Yes	n/a	n/a	n/a	Yes
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
Headphone Jack (3.5mm)	-	Yes	Yes	Yes	-
Music Player	Yes	n/a	n/a	n/a	-
Stereo Speakers	Yes	-	-	-	-
Photo & Video
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
To-Do List	-	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	-
Games	Yes	n/a	n/a	n/a	Yes
Java (J2ME)	-	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	HTC Droid Eris	ZTE Blade Max 3 / Max Blue	ZTE Blade Vantage	Samsung SGH-X640
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung SCH-A990	HTC Droid Eris	ZTE Blade Max 3 / Max Blue	ZTE Blade Vantage	Samsung SGH-X640