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Phone	Samsung SGH-X640	Samsung Galaxy J2 / J2 Pure / J2 Dash	LG Stylo 4	Coolpad Conjr	Palm Treo 600 (CDMA)
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	5" diag. 16 : 9	6.2" diag. 18 : 9	5" diag. 16 : 9	?
Display Resolution & Type	128 x 160 pixels LCD (TFT/TFD)	540 x 960 pixels (~220 ppi) LCD (TFT/TFD)	1080 x 2160 pixels (~390 ppi) LCD (TFT/TFD)	720 x 1280 pixels (~294 ppi) LCD (TFT/TFD)	160 x 160 pixels LCD (Color)
Display Refresh	?	60 Hz	60 Hz	60 Hz	?
Battery	800 mAh	2,600 mAh	3,300 mAh	2,500 mAh	?
Processor	?	1.4 GHz Samsung Exynos 7570	1.8 GHz Qualcomm Snapdragon 450	1 GHz MediaTek MT6735	?
RAM	?	2 GB	2 GB *	3 GB	?
Storage	? raw hardware	16 GB	32 GB *	16 GB	? raw hardware
Main Camera	Yes	8 megapixel	13 megapixel	13 megapixel	Yes
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	1080p HD	1080p HD	1080p HD	-
Front Camera	-	5 megapixel	5 megapixel	8 megapixel	-
Weight	3 oz (85g)	5.43 oz (154g)	6.07 oz (172g)	5.14 oz (146g)	6.2 oz (176g)
Dimensions	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	5.65" x 2.84" x 0.35" (144 x 72 x 8.9 mm)	6.31" x 3.06" x 0.33" (160 x 78 x 8.4 mm)	5.72" x 2.86" x 0.35" (145 x 73 x 8.8 mm)	4.41" x 2.36" x 0.87" (112 x 60 x 22.1 mm)
Form Factor	Clamshell	Slab	Slab	Slab	Slab
Platform / OS	(proprietary)	Android	Android	Android	Palm OS
Network Bands	GSM: 900, 1800, 1900	4G LTE: 2, 3, 4, 5, 7, 12, 14, 66, 71 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 *	4G LTE: 1, 2, 3, 4, 5, 7, 12, 13, 14, 20, 29, 30, 38, 41, 66, 71 WCDMA: 1, 2, 4, 5 GSM: 850, 900, 1800, 1900 *	4G LTE: 2, 4, 5, 7, 12 WCDMA: 1, 2, 4, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900
Data Technology	GPRS	LTE (Cat 4)	LTE (Cat 6)	LTE (Cat 4)	1xRTT
Features
Fingerprint Reader	-	-	Yes stand-alone	Yes stand-alone	-
Flashlight	-	Yes	Yes	Yes	-
GPS / Location	-	n/a	n/a	n/a	n/a
Accessibility
Hearing Aid Compatible	-	Yes M3, T3 (mostly tele-coil compatible)	Yes M4, T3 (mostly tele-coil compatible)	Yes M4, T4 (very tele-coil compatible)	-
Multiple Languages	Yes	n/a	n/a	n/a	n/a
TTY/TDD (Digital)	-	Yes	Yes	Yes	Yes
Connectivity
Bluetooth	-	Yes	Yes	Yes	-
Infrared (IR)	-	-	-	-	Yes
NFC	-	-	Yes *	-	-
USB	-	Yes Micro-USB	Yes USB Type C	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	n/a
Ringer ID	Yes	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
Data & Network
Data Tethering	-	n/a	n/a	n/a	n/a
Dual-SIM	-	-	-	Yes	-
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
Stylus	-	-	Yes	-	-
Text Keyboard, Hardware	-	-	-	-	Yes
Touch Screen	-	Yes Capacitive	Yes Capacitive	Yes Capacitive	Yes
Memory
Memory Card Slot	-	Yes	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
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	-	-
Headphone Jack (3.5mm)	-	Yes	Yes	Yes	-
Photo & Video
DLNA	-	-	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	-	-
Headset Jack (2.5 mm)	Yes	n/a	n/a	n/a	n/a
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Samsung SGH-X640	Samsung Galaxy J2 / J2 Pure / J2 Dash	LG Stylo 4	Coolpad Conjr	Palm Treo 600 (CDMA)
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung SGH-X640	Samsung Galaxy J2 / J2 Pure / J2 Dash	LG Stylo 4	Coolpad Conjr	Palm Treo 600 (CDMA)