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Specifications
	X >	< X >	< X >	< X >	< X

Phone	Samsung SGH-X640	Sony Ericsson T61c	Samsung Galaxy Core Prime (GSM)	Motorola v66i	ZTE Blade Z Max
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	?	4.5" diag. 5 : 3	?	6" diag. 16 : 9
Display Resolution & Type	128 x 160 pixels LCD (TFT/TFD)	?	480 x 800 pixels (~207 ppi) LCD (TFT/TFD)	?	1080 x 1920 pixels (~367 ppi) LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	?	60 Hz
Battery	800 mAh	?	2,000 mAh	?	4,080 mAh
Processor	?	?	1.2 GHz Qualcomm Snapdragon 410 MSM8916	?	1.4 GHz Qualcomm Snapdragon 435 (MSM8940)
RAM	?	?	1 GB	?	2 GB
Storage	? raw hardware	? raw hardware	8 GB	? raw hardware	32 GB
Main Camera	Yes	-	5 megapixel	-	16 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	-	720p HD	-	1080p HD
Front Camera	-	-	2 megapixel	-	8 megapixel
Weight	3 oz (85g)	4.4 oz (125g)	4.27 oz (121g)	2.79 oz (79g)	6.58 oz (186g)
Dimensions	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	4.8" x 2.13" x 0.92" (122 x 54 x 23.4 mm)	5.16" x 2.68" x 0.35" (131 x 68 x 8.9 mm)	3.3" x 1.7" x 0.83" (84 x 43 x 21.1 mm)	6.51" x 3.28" x 0.33" (165 x 83 x 8.3 mm)
Form Factor	Clamshell	Slab	Slab	Clamshell	Slab
Platform / OS	(proprietary)	(proprietary)	Android	(proprietary)	Android
Network Bands	GSM: 900, 1800, 1900	CDMA: 850, 1900 AMPS: 850	4G LTE: 2, 4, 5, 12 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900	GSM: 900, 1800, 1900	4G LTE: 2, 4, 5, 12, 66 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900
Data Technology	GPRS	1xRTT	LTE (Cat 3)	GPRS	LTE (Cat 6)
Features
Fingerprint Reader	-	-	-	-	Yes stand-alone
Flashlight	-	-	Yes	-	Yes
GPS / Location	-	Yes	n/a	-	n/a
Accessibility
Adjustable Text Size	-	-	n/a	-	n/a
Hearing Aid Compatible	-	-	Yes M3, T3 (mostly tele-coil compatible)	-	Yes M4, T3 (mostly tele-coil compatible)
Multiple Languages	Yes	Yes	n/a	Yes	n/a
TTY/TDD (Digital)	-	-	Yes	-	Yes
Alerts
Ringer Profiles	-	Yes	-	-	-
Connectivity
Bluetooth	-	Yes	Yes	-	Yes
Mobile Hotspot	-	-	n/a	-	n/a
USB	-	-	Yes Micro-USB	Yes	Yes USB Type C
Wi-Fi	-	-	Yes 4 (802.11 b,g,n)	-	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	Yes	-	n/a	-	n/a
Ringer ID	Yes	-	n/a	Yes	n/a
Voice Dialing	-	Yes	n/a	Yes	n/a
Customization
Changeable Body Plates	-	Yes	-	Yes	-
Custom Graphics	Yes	Yes	n/a	-	n/a
Custom Ringtones	Yes	Yes	n/a	Yes	n/a
Real-Music Ringers	-	-	n/a	-	n/a
Data & Network
Data Tethering	-	Yes	n/a	Yes	n/a
WAP / Web Browser	Yes	Yes	n/a	Yes	n/a
Input
Predictive Text Entry	Yes	Yes	n/a	Yes	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Touch Screen	-	-	Yes Capacitive	-	Yes Capacitive
Memory
Memory Card Slot	-	-	Yes	-	Yes
Messaging
Email Client	-	-	n/a	-	n/a
EMS / Picture Messaging	Yes	Yes	n/a	Yes	n/a
Instant Messaging	-	-	n/a	-	n/a
MMS	Yes	-	n/a	-	n/a
Text Messaging Templates	Yes	Yes	n/a	-	n/a
Music
FM Radio	-	-	-	-	Yes
Headphone Jack (3.5mm)	-	-	Yes	-	Yes
Music Player	-	-	n/a	-	n/a
Power
Fast Charging	-	-	Yes	-	Yes
Productivity
Alarm	Yes	Yes	n/a	Yes	n/a
Calculator	Yes	Yes	n/a	Yes	n/a
Calendar	Yes	Yes	n/a	Yes	n/a
To-Do List	Yes	-	n/a	-	n/a
Voice Memo	Yes	Yes	n/a	Yes	n/a
Software
Games	Yes	Yes	n/a	Yes	n/a
Java (J2ME)	Yes	-	n/a	Yes	n/a
Voice
HD Voice	-	-	Yes	-	Yes
Headset Jack (2.5 mm)	Yes	Yes	n/a	Yes	n/a
Speaker Phone	Yes	-	Yes	-	Yes
	Samsung SGH-X640	Sony Ericsson T61c	Samsung Galaxy Core Prime (GSM)	Motorola v66i	ZTE Blade Z Max
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung SGH-X640	Sony Ericsson T61c	Samsung Galaxy Core Prime (GSM)	Motorola v66i	ZTE Blade Z Max