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Specifications
	X >	< X >	< X >	< X

Phone	Samsung SGH-X640	Samsung Captivate (Galaxy S)	Coolpad REVVL Plus	LG Optimus L90
Current U.S. Carriers	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released
Display Size	?	4" diag. 5 : 3	6" diag. 16 : 9	4.7" diag. 16 : 9
Display Resolution & Type	128 x 160 pixels LCD (TFT/TFD)	480 x 800 pixels (~233 ppi) AMOLED	1080 x 1920 pixels (~367 ppi) LCD (TFT/TFD)	540 x 960 pixels (~234 ppi) LCD (TFT/TFD)
Display Refresh	?	60 Hz	60 Hz	60 Hz
Battery	800 mAh	1,500 mAh	3,380 mAh	2,460 mAh
Processor	?	1 GHz Samsung Hummingbird Cortex A8	2 GHz Qualcomm Snapdragon 625 (MSM8953)	1.2 GHz Qualcomm Snapdragon 400 MSM8226
RAM	?	?	2 GB	1 GB
Storage	? raw hardware	16 GB	32 GB	8 GB
Main Camera	Yes	5 megapixel	13 megapixel	5 megapixel
Wide Camera	-	-	-	-
Tele Camera	-	-	-	-
Video Capture	-	720p HD	1080p HD	1080p HD
Front Camera	-	-	8 megapixel	Yes
Weight	3 oz (85g)	4.41 oz (125g)	6.91 oz (196g)	4.37 oz (124g)
Dimensions	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	4.83" x 2.52" x 0.41" (123 x 64 x 10.4 mm)	6.49" x 3.24" x 0.34" (165 x 82 x 8.6 mm)	5.18" x 2.6" x 0.38" (132 x 66 x 9.7 mm)
Form Factor	Clamshell	Slab	Slab	Slab
Platform / OS	(proprietary)	Android	Android	Android
Network Bands	GSM: 900, 1800, 1900	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	4G LTE: 2, 4, 5, 12, 66 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900
Data Technology	GPRS	HSPA 7.2	LTE (Cat 6)	HSPA+ 21
Features
Fingerprint Reader	-	-	Yes stand-alone	-
Flashlight	-	-	Yes	Yes
GPS / Location	-	n/a	n/a	n/a
Accessibility
Adjustable Text Size	-	n/a	n/a	n/a
Hearing Aid Compatible	-	Yes M3 (mostly compatible)	Yes M3, T3 (mostly tele-coil compatible)	Yes M3, T4 (very tele-coil compatible)
Multiple Languages	Yes	n/a	n/a	n/a
TTY/TDD (Digital)	-	Yes	Yes	Yes
Connectivity
Bluetooth	-	Yes	Yes	Yes
Infrared (IR)	-	-	-	Yes
Mobile Hotspot	-	n/a	n/a	n/a
USB	-	Yes Micro-USB	Yes Micro-USB	Yes
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	n/a	n/a	n/a
Ringer ID	Yes	n/a	n/a	n/a
Voice Dialing	-	n/a	n/a	n/a
Customization
Custom Graphics	Yes	n/a	n/a	n/a
Custom Ringtones	Yes	n/a	n/a	n/a
Real-Music Ringers	-	n/a	n/a	n/a
Data & Network
Data Tethering	-	n/a	n/a	n/a
WAP / Web Browser	Yes	n/a	n/a	n/a
Input
Predictive Text Entry	Yes	n/a	n/a	n/a
Side Keys	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	n/a
EMS / Picture Messaging	Yes	n/a	n/a	n/a
Instant Messaging	-	n/a	n/a	n/a
MMS	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
Music Player	-	n/a	n/a	n/a
Photo & Video
DLNA	-	Yes	-	-
Productivity
Alarm	Yes	n/a	n/a	n/a
Calculator	Yes	n/a	n/a	n/a
Calendar	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
	Samsung SGH-X640	Samsung Captivate (Galaxy S)	Coolpad REVVL Plus	LG Optimus L90
	X >	< X >	< X >	< X

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


Phone	Samsung SGH-X640	Samsung Captivate (Galaxy S)	Coolpad REVVL Plus	LG Optimus L90