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Phone	Samsung SGH-X640	Apple iPhone 4S	ZTE Engage LT / Engage MT	Motorola Bali	Samsung Galaxy S 4 (GSM)
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	3.5" diag. 5 : 3	4" diag. 5 : 3	2.2" diag. 4 : 3	5" diag. 16 : 9
Display Resolution & Type	128 x 160 pixels LCD (TFT/TFD)	640 x 960 pixels (~330 ppi) LCD (TFT/TFD)	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	176 x 220 pixels (~128 ppi) LCD (TFT/TFD)	1080 x 1920 pixels (~441 ppi) AMOLED
Display Refresh	?	60 Hz	60 Hz	?	60 Hz
Battery	800 mAh	?	1,900 mAh	950 mAh	2,600 mAh
Processor	?	Apple A5	?	?	1.9 GHz Qualcomm Snapdragon 600 8064T
RAM	?	?	1 GB	?	2 GB
Storage	? raw hardware	64 GB *	4 GB	? raw hardware	16 GB *
Main Camera	Yes	8 megapixel	3 megapixel	1 megapixel	13 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	1080p HD	WVGA / 480p	?	1080p HD
Front Camera	-	Yes	Yes	-	2 megapixel
Weight	3 oz (85g)	4.9 oz (139g)	5.09 oz (144g)	2.6 oz (74g)	4.59 oz (130g)
Dimensions	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	4.5" x 2.31" x 0.37" (114 x 59 x 9.4 mm)	4.78" x 2.54" x 0.46" (121 x 64 x 11.7 mm)	3.8" x 1.8" x 0.6" (97 x 46 x 15.2 mm)	5.38" x 2.75" x 0.31" (137 x 70 x 7.9 mm)
Form Factor	Clamshell	Slab	Slab	Clamshell	Slab
Platform / OS	(proprietary)	iOS	Android	(proprietary)	Android
Network Bands	GSM: 900, 1800, 1900	WCDMA: 1, 2, 5, 8 CDMA: 850, 1900 GSM: 850, 900, 1800, 1900	CDMA: 850, 1700, 1900	CDMA: 1900	4G LTE: 2, 4, 5, 17 WCDMA: 1, 2, 4, 5 GSM: 850, 900, 1800, 1900 *
Data Technology	GPRS	HSPA 14.4	EVDO rA	1xRTT	LTE (Cat 3)
Features
Flashlight	-	-	-	-	Yes
GPS / Location	-	n/a	n/a	Yes	n/a
Accessibility
Adjustable Text Size	-	n/a	n/a	-	n/a
Hearing Aid Compatible	-	Yes	-	Yes M3, T4 (very tele-coil compatible)	Yes M3 (mostly compatible)
Multiple Languages	Yes	n/a	n/a	Yes	n/a
TTY/TDD (Digital)	-	Yes	Yes	Yes	Yes
Alerts
Extra Display	-	-	-	Yes	-
Connectivity
Bluetooth	-	Yes	Yes	Yes	Yes
Infrared (IR)	-	-	-	-	Yes
Mobile Hotspot	-	n/a	n/a	-	n/a
NFC	-	-	-	-	Yes
USB	-	Yes	Yes Micro-USB	Yes Mini-USB	Yes
Wi-Fi	-	Yes 4 (802.11 b,g,n)	Yes	-	Yes 5 (802.11 a,ac,b,g,n)
Contacts
Picture ID	Yes	n/a	n/a	Yes	n/a
Ringer ID	Yes	n/a	n/a	Yes	n/a
Voice Dialing	-	n/a	n/a	Yes	n/a
Customization
Custom Graphics	Yes	n/a	n/a	Yes	n/a
Custom Ringtones	Yes	n/a	n/a	Yes	n/a
Real-Music Ringers	-	n/a	n/a	Yes	n/a
Data & Network
Data Tethering	-	n/a	n/a	-	n/a
WAP / Web Browser	Yes	n/a	n/a	Yes	n/a
Input
Predictive Text Entry	Yes	n/a	n/a	Yes	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Touch Screen	-	Yes Capacitive	Yes Capacitive	-	Yes Capacitive
Memory
Memory Card Slot	-	-	Yes	Yes	Yes
Messaging
Email Client	-	n/a	n/a	Yes	n/a
EMS / Picture Messaging	Yes	n/a	n/a	-	n/a
Instant Messaging	-	n/a	n/a	Yes	n/a
MMS	Yes	n/a	n/a	Yes	n/a
Text Messaging Templates	Yes	n/a	n/a	Yes	n/a
Music
Headphone Jack (3.5mm)	-	Yes	Yes	-	Yes
Music Player	-	n/a	n/a	Yes	n/a
Photo & Video
DLNA	-	-	-	-	Yes
Miracast	-	-	-	-	Yes
TV Output	-	Yes	-	-	Yes
Productivity
Alarm	Yes	n/a	n/a	Yes	n/a
Calculator	Yes	n/a	n/a	Yes	n/a
Calendar	Yes	n/a	n/a	Yes	n/a
To-Do List	Yes	n/a	n/a	-	n/a
Voice Memo	Yes	n/a	n/a	Yes	n/a
Software
Games	Yes	n/a	n/a	Yes	n/a
Java (J2ME)	Yes	n/a	n/a	Yes	n/a
Voice
Headset Jack (2.5 mm)	Yes	n/a	n/a	Yes	n/a
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	Samsung SGH-X640	Apple iPhone 4S	ZTE Engage LT / Engage MT	Motorola Bali	Samsung Galaxy S 4 (GSM)
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung SGH-X640	Apple iPhone 4S	ZTE Engage LT / Engage MT	Motorola Bali	Samsung Galaxy S 4 (GSM)