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Phone	Samsung SGH-X640	Samsung Trender	ZTE Flash	Sony Xperia Z1 / Z1s	Samsung Sidekick 4G
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	2.8" diag. 4 : 3	4.5" diag. 16 : 9	5" diag. 16 : 9	3.5" diag. 5 : 3
Display Resolution & Type	128 x 160 pixels LCD (TFT/TFD)	240 x 320 pixels (~143 ppi) LCD (TFT/TFD)	720 x 1280 pixels (~326 ppi) LCD (TFT/TFD)	1080 x 1920 pixels (~441 ppi) LCD (TFT/TFD)	480 x 800 pixels (~267 ppi) LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	60 Hz	60 Hz
Battery	800 mAh	1,000 mAh	1,780 mAh	3,000 mAh	?
Processor	?	Qualcomm QSC6055	1.5 GHz Qualcomm Snapdragon S4 Plus MSM8960	2.2 GHz Qualcomm Snapdragon 800 MSM8974	1 GHz Samsung Hummingbird Cortex A8
RAM	?	?	1 GB	2 GB	?
Storage	? raw hardware	? raw hardware	8 GB	32 GB *	? raw hardware
Main Camera	Yes	1 megapixel	12 megapixel	20 megapixel	3 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	-	1080p HD	1080p HD	WVGA / 480p
Front Camera	-	-	1 megapixel	2 megapixel	Yes
Weight	3 oz (85g)	4 oz (113g)	5.2 oz (147g)	5.96 oz (169g)	5.7 oz (162g)
Dimensions	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	4.2" x 2.2" x 0.6" (107 x 56 x 15.2 mm)	5.27" x 2.56" x 0.38" (134 x 65 x 9.7 mm)	5.69" x 2.91" x 0.33" (144 x 74 x 8.5 mm)	5" x 2.42" x 0.6" (127 x 61 x 15.2 mm)
Form Factor	Clamshell	Slide	Slab	Slab	Slide
Platform / OS	(proprietary)	(proprietary)	Android	Android	Android
Network Bands	GSM: 900, 1800, 1900	CDMA: 800, 850, 1900	4G LTE: 25 CDMA: 800, 850, 1900	4G LTE: 4, 17 WCDMA: 1, 2, 4, 5, 8 GSM: 850, 900, 1800, 1900 *	WCDMA: 1, 4 GSM: 850, 900, 1800, 1900
Data Technology	GPRS	1xRTT	LTE (Cat 3)	HSPA+ 42	HSPA+ 21
Features
GPS / Location	-	Yes	n/a	n/a	n/a
Ruggedized	-	-	-	Yes	-
Water-Resistant	-	-	-	Yes	-
Accessibility
Adjustable Text Size	-	-	n/a	n/a	n/a
Hearing Aid Compatible	-	Yes M4, T4 (very tele-coil compatible)	Yes M4, T4 (very tele-coil compatible)	Yes M3, T3 (mostly tele-coil compatible)	Yes M3, T3 (mostly tele-coil compatible)
Multiple Languages	Yes	Yes	n/a	n/a	n/a
TTY/TDD (Digital)	-	Yes	Yes	Yes	Yes
Connectivity
Bluetooth	-	Yes	Yes	Yes	Yes
MirrorLink	-	-	-	Yes	-
Mobile Hotspot	-	-	n/a	n/a	n/a
NFC	-	-	Yes	Yes	-
USB	-	Yes Micro-USB	Yes Micro-USB	Yes Micro-USB	Yes Micro-USB
Wi-Fi	-	-	Yes 4 (802.11 b,g,n)	Yes 5 (802.11 a,ac,b,g,n)	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	Yes	Yes	n/a	n/a	n/a
Ringer ID	Yes	Yes	n/a	n/a	n/a
Voice Dialing	-	Yes	n/a	n/a	n/a
Customization
Custom Graphics	Yes	Yes	n/a	n/a	n/a
Custom Ringtones	Yes	Yes	n/a	n/a	n/a
Real-Music Ringers	-	Yes	n/a	n/a	n/a
Data & Network
Data Tethering	-	-	n/a	n/a	n/a
WAP / Web Browser	Yes	Yes	n/a	n/a	n/a
Input
Predictive Text Entry	Yes	-	n/a	n/a	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	Yes	-	-	Yes
Touch Screen	-	Yes Capacitive	Yes Capacitive	Yes Capacitive	Yes
Memory
Memory Card Slot	-	Yes	Yes	Yes	Yes
Messaging
Email Client	-	Yes	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	Yes	n/a	n/a	n/a
Text Messaging Templates	Yes	-	n/a	n/a	n/a
Music
FM Radio	-	-	-	Yes	-
Headphone Jack (3.5mm)	-	Yes	Yes	Yes	Yes
Music Player	-	Yes	n/a	n/a	n/a
Photo & Video
DLNA	-	-	-	Yes	Yes
Miracast	-	-	-	Yes	-
TV Output	-	-	-	Yes	-
Productivity
Alarm	Yes	Yes	n/a	n/a	n/a
Calculator	Yes	Yes	n/a	n/a	n/a
Calendar	Yes	Yes	n/a	n/a	n/a
To-Do List	Yes	-	n/a	n/a	n/a
Voice Memo	Yes	-	n/a	n/a	n/a
Software
Games	Yes	-	n/a	n/a	n/a
Java (J2ME)	Yes	-	n/a	n/a	n/a
Voice
HD Voice	-	-	Yes	-	-
Headset Jack (2.5 mm)	Yes	-	n/a	n/a	n/a
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	Samsung SGH-X640	Samsung Trender	ZTE Flash	Sony Xperia Z1 / Z1s	Samsung Sidekick 4G
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung SGH-X640	Samsung Trender	ZTE Flash	Sony Xperia Z1 / Z1s	Samsung Sidekick 4G