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Phone	Samsung SGH-X640	Motorola Droid X	Nokia Lumia 521 / 520	ZTE Blade A7 Prime	Samsung Galaxy S6 (CDMA)
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	4.3" diag. 16 : 9	4" diag. 5 : 3	6.1" diag. 19.5 : 9	5.1" diag. 16 : 9
Display Resolution & Type	128 x 160 pixels LCD (TFT/TFD)	480 x 854 pixels (~228 ppi) LCD (TFT/TFD)	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	720 x 1560 pixels (~282 ppi) LCD (TFT/TFD)	1440 x 2560 pixels (~576 ppi) AMOLED
Display Refresh	?	60 Hz	?	60 Hz	60 Hz
Battery	800 mAh	1,540 mAh	1,430 mAh	3,200 mAh	2,550 mAh
Processor	?	1 GHz TI OMAP 3630 (ARM Cortex A8)	1 GHz Qualcomm Snapdragon S4 MSM8270	2 GHz MediaTek Helio A22 (MT6761)	2.1 GHz Samsung Exynos
RAM	?	?	512 MB	3 GB	3 GB
Storage	? raw hardware	8 GB	8 GB	32 GB	32 GB *
Main Camera	Yes	8 megapixel	5 megapixel	16 megapixel	16 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	720p HD	720p HD	1080p HD	4K UHD
Front Camera	-	-	-	5 megapixel	5 megapixel
Weight	3 oz (85g)	5.47 oz (155g)	4.39 oz (124g)	5.82 oz (165g)	4.87 oz (138g)
Dimensions	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	5" x 2.6" x 0.4" (127 x 66 x 10.2 mm)	4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm)	6.17" x 2.87" x 0.32" (157 x 73 x 8.1 mm)	5.65" x 2.78" x 0.27" (143 x 71 x 6.8 mm)
Form Factor	Clamshell	Slab	Slab	Slab	Slab
Platform / OS	(proprietary)	Android	Windows	Android	Android
Network Bands	GSM: 900, 1800, 1900	CDMA: 850, 1900	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 *	4G LTE: 2, 4, 5, 13	4G LTE: 2, 4, 5, 13 WCDMA: 1, 2, 5, 8 CDMA: 850, 1900 GSM: 850, 900, 1800, 1900 *
Data Technology	GPRS	EVDO rA	HSPA+ 21	LTE (Cat 4)	LTE (Cat 4)
Features
Fingerprint Reader	-	-	-	Yes	Yes
Flashlight	-	-	-	Yes	Yes
GPS / Location	-	n/a	n/a	n/a	n/a
VR-ready	-	-	-	-	Yes
Water-Resistant	-	-	-	Yes IPX2 (drip)	-
Accessibility
Hearing Aid Compatible	-	Yes M4, T3 (mostly tele-coil compatible)	Yes M3, T4 (very tele-coil compatible)	Yes M4, T3 (mostly tele-coil compatible)	Yes M4, T3 (mostly tele-coil compatible)
Multiple Languages	Yes	n/a	n/a	n/a	n/a
TTY/TDD (Digital)	-	Yes	Yes	-	Yes
Connectivity
Bluetooth	-	Yes	Yes	Yes	Yes
Infrared (IR)	-	-	-	-	Yes
MirrorLink	-	-	-	-	Yes
Mobile Hotspot	-	n/a	n/a	n/a	n/a
NFC	-	-	-	-	Yes
USB	-	Yes	Yes	Yes USB Type C	Yes Micro-USB
Wi-Fi	-	Yes	Yes	Yes 5 (802.11 a,ac,b,g,n)	Yes 5 (802.11 a,ac,b,g,n)
Contacts
Picture ID	Yes	n/a	n/a	n/a	n/a
Ringer ID	Yes	n/a	n/a	n/a	n/a
Voice Dialing	-	n/a	n/a	n/a	n/a
Customization
Custom Graphics	Yes	n/a	n/a	n/a	n/a
Custom Ringtones	Yes	n/a	n/a	n/a	n/a
Real-Music Ringers	-	n/a	n/a	n/a	n/a
Data & Network
Data Tethering	-	n/a	n/a	n/a	n/a
WAP / Web Browser	Yes	n/a	n/a	n/a	n/a
Input
Predictive Text Entry	Yes	n/a	n/a	n/a	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Touch Screen	-	Yes Capacitive	Yes Capacitive	Yes Capacitive	Yes Capacitive
Memory
Memory Card Slot	-	Yes	Yes	Yes	-
Messaging
Email Client	-	n/a	n/a	n/a	n/a
EMS / Picture Messaging	Yes	n/a	n/a	n/a	n/a
Instant Messaging	-	n/a	n/a	n/a	n/a
MMS	Yes	n/a	n/a	n/a	n/a
Text Messaging Templates	Yes	n/a	n/a	n/a	n/a
Music
FM Radio	-	Yes	-	Yes	-
Headphone Jack (3.5mm)	-	Yes	Yes	Yes	Yes
Music Player	-	n/a	n/a	n/a	n/a
Photo & Video
DLNA	-	Yes	-	-	Yes
Miracast	-	-	-	-	Yes
TV Output	-	Yes	-	-	Yes
Power
Wireless Charging	-	-	-	-	Yes
Productivity
Alarm	Yes	n/a	n/a	n/a	n/a
Calculator	Yes	n/a	n/a	n/a	n/a
Calendar	Yes	n/a	n/a	n/a	n/a
To-Do List	Yes	n/a	n/a	n/a	n/a
Voice Memo	Yes	n/a	n/a	n/a	n/a
Software
Games	Yes	n/a	n/a	n/a	n/a
Java (J2ME)	Yes	n/a	n/a	n/a	n/a
Voice
HD Voice	-	-	-	Yes	Yes
Headset Jack (2.5 mm)	Yes	n/a	n/a	n/a	n/a
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	Samsung SGH-X640	Motorola Droid X	Nokia Lumia 521 / 520	ZTE Blade A7 Prime	Samsung Galaxy S6 (CDMA)
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung SGH-X640	Motorola Droid X	Nokia Lumia 521 / 520	ZTE Blade A7 Prime	Samsung Galaxy S6 (CDMA)