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Phone	Samsung SGH-X640	HTC Desire 612 (CDMA)	ZTE Blade Z Max	Motorola Rival A455
Current U.S. Carriers	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released
Display Size	?	4.7" diag. 16 : 9	6" diag. 16 : 9	2.2" diag. 4 : 3
Display Resolution & Type	128 x 160 pixels LCD (TFT/TFD)	540 x 960 pixels (~234 ppi) LCD (TFT/TFD)	1080 x 1920 pixels (~367 ppi) LCD (TFT/TFD)	176 x 220 pixels (~131 ppi) LCD (TFT/TFD)
Display Refresh	?	60 Hz	60 Hz	?
Battery	800 mAh	2,040 mAh	4,080 mAh	940 mAh
Processor	?	1.2 GHz Qualcomm Snapdragon 400 (MSM8926)	1.4 GHz Qualcomm Snapdragon 435 (MSM8940)	?
RAM	?	1 GB	2 GB	?
Storage	? raw hardware	8 GB	32 GB	? raw hardware
Main Camera	Yes	8 megapixel	16 megapixel	2 megapixel
Wide Camera	-	-	-	-
Tele Camera	-	-	-	-
Video Capture	-	1080p HD	1080p HD	QVGA (320 x 240)
Front Camera	-	1 megapixel	8 megapixel	-
Weight	3 oz (85g)	5.15 oz (146g)	6.58 oz (186g)	4.48 oz (127g)
Dimensions	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	5.66" x 2.77" x 0.37" (144 x 70 x 9.4 mm)	6.51" x 3.28" x 0.33" (165 x 83 x 8.3 mm)	3.82" x 1.96" x 0.73" (97 x 50 x 18.5 mm)
Form Factor	Clamshell	Slab	Slab	Slide
Platform / OS	(proprietary)	Android	Android	(proprietary)
Network Bands	GSM: 900, 1800, 1900	4G LTE: 4, 13 CDMA: 850, 1900	4G LTE: 2, 4, 5, 12, 66 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900
Data Technology	GPRS	LTE (Cat 3)	LTE (Cat 6)	EVDO r0
Features
Fingerprint Reader	-	-	Yes stand-alone	-
Flashlight	-	-	Yes	-
GPS / Location	-	n/a	n/a	Yes
Accessibility
Adjustable Text Size	-	n/a	n/a	-
Hearing Aid Compatible	-	Yes M4, T3 (mostly tele-coil compatible)	Yes M4, T3 (mostly tele-coil compatible)	Yes M3, T3 (mostly tele-coil compatible)
Multiple Languages	Yes	n/a	n/a	Yes
TTY/TDD (Digital)	-	Yes	Yes	Yes
Connectivity
Bluetooth	-	Yes	Yes	Yes
Mobile Hotspot	-	n/a	n/a	-
NFC	-	Yes	-	-
USB	-	Yes Micro-USB	Yes USB Type C	Yes Micro-USB
Wi-Fi	-	Yes 4 (802.11 b,g,n)	Yes 4 (802.11 b,g,n)	-
Contacts
Picture ID	Yes	n/a	n/a	Yes
Ringer ID	Yes	n/a	n/a	Yes
Voice Dialing	-	n/a	n/a	Yes
Customization
Custom Graphics	Yes	n/a	n/a	Yes
Custom Ringtones	Yes	n/a	n/a	Yes
Real-Music Ringers	-	n/a	n/a	Yes
Data & Network
Data Tethering	-	n/a	n/a	Yes
WAP / Web Browser	Yes	n/a	n/a	Yes
Input
Predictive Text Entry	Yes	n/a	n/a	-
Side Keys	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	-	-	Yes
Touch Screen	-	Yes Capacitive	Yes Capacitive	Yes
Memory
Memory Card Slot	-	Yes	Yes	Yes
Messaging
Email Client	-	n/a	n/a	Yes
EMS / Picture Messaging	Yes	n/a	n/a	Yes
Instant Messaging	-	n/a	n/a	Yes
MMS	Yes	n/a	n/a	Yes
Text Messaging Templates	Yes	n/a	n/a	Yes
Music
FM Radio	-	-	Yes	-
Headphone Jack (3.5mm)	-	Yes	Yes	Yes
Music Player	-	n/a	n/a	Yes
Stereo Speakers	-	Yes	-	-
Photo & Video
DLNA	-	Yes	-	-
Power
Fast Charging	-	-	Yes	-
Productivity
Alarm	Yes	n/a	n/a	Yes
Calculator	Yes	n/a	n/a	Yes
Calendar	Yes	n/a	n/a	Yes
To-Do List	Yes	n/a	n/a	-
Voice Memo	Yes	n/a	n/a	Yes
Software
BREW	-	n/a	n/a	Yes
Games	Yes	n/a	n/a	Yes
Java (J2ME)	Yes	n/a	n/a	-
Voice
HD Voice	-	-	Yes	-
Headset Jack (2.5 mm)	Yes	n/a	n/a	-
Speaker Phone	Yes	Yes	Yes	Yes
	Samsung SGH-X640	HTC Desire 612 (CDMA)	ZTE Blade Z Max	Motorola Rival A455
	X >	< X >	< X >	< X

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


Phone	Samsung SGH-X640	HTC Desire 612 (CDMA)	ZTE Blade Z Max	Motorola Rival A455