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Phone	Samsung Galaxy J3 (2017, GSM) / J3 Prime / Express Prime 2 / Amp Prime 2 / Sol 2	Samsung SGH-X640	BlackBerry Curve 8300	LG Harmony 4 / Xpression Plus 3 / Premier Pro Plus
Current U.S. Carriers	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released
Display Size	5" diag. 16 : 9	?	?	6.1" diag. 19.5 : 9
Display Resolution & Type	720 x 1280 pixels (~294 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (TFT/TFD)	320 x 240 pixels LCD (TFT/TFD)	720 x 1560 pixels (~282 ppi) LCD (TFT/TFD)
Display Refresh	60 Hz	?	?	60 Hz
Battery	2,600 mAh	800 mAh	?	3,500 mAh
Processor	1.4 GHz Samsung Exynos 7 Quad (7570)	?	?	2 GHz MediaTek Helio P22 (MT6762)
RAM	1.5 GB	?	?	3 GB *
Storage	16 GB	? raw hardware	? raw hardware	32 GB
Main Camera	5 megapixel	Yes	2 megapixel	13 megapixel
Wide Camera	-	-	-	5 megapixel
Tele Camera	-	-	-	-
Video Capture	1080p HD	-	-	1080p HD
Front Camera	2 megapixel	-	-	8 megapixel
Weight	5.2 oz (147g)	3 oz (85g)	3.92 oz (111g)	6.1 oz (173g)
Dimensions	5.54" x 2.76" x 0.34" (141 x 70 x 8.6 mm)	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	4.2" x 2.36" x 0.61" (107 x 60 x 15.5 mm)	6.15" x 2.92" x 0.34" (156 x 74 x 8.6 mm)
Form Factor	Slab	Clamshell	Slab	Slab
Platform / OS	Android	(proprietary)	BlackBerry OS	Android
Network Bands	4G LTE: 2, 4, 5, 12 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 *	GSM: 900, 1800, 1900	GSM: 850, 900, 1800, 1900	4G LTE: 2, 4, 5, 12, 13, 14, 25, 26, 29, 30, 41, 66, 71 WCDMA: 2, 4, 5 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 *
Data Technology	LTE (Cat 4)	GPRS	EDGE	LTE (Cat 6)
Features
Fingerprint Reader	-	-	-	Yes stand-alone
Flashlight	Yes	-	-	Yes
Accessibility
Adjustable Text Size	n/a	-	n/a	n/a
Hearing Aid Compatible	Yes M3, T3 (mostly tele-coil compatible)	-	-	Yes M3, T3 (mostly tele-coil compatible)
Multiple Languages	n/a	Yes	n/a	n/a
TTY/TDD (Digital)	Yes	-	Yes	Yes
Alerts
Ringer Profiles	-	-	Yes	-
Connectivity
Bluetooth	Yes	-	Yes	Yes
USB	Yes Micro-USB	-	Yes	Yes USB Type C
Wi-Fi	Yes 5 (802.11 a,ac,b,g,n)	-	-	Yes 4 (802.11 a,b,g,n)
Contacts
Picture ID	n/a	Yes	n/a	n/a
Ringer ID	n/a	Yes	n/a	n/a
Voice Dialing	n/a	-	n/a	n/a
Customization
Custom Graphics	n/a	Yes	n/a	n/a
Custom Ringtones	n/a	Yes	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	n/a	Yes	n/a	n/a
Input
Predictive Text Entry	n/a	Yes	n/a	n/a
Side Keys	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	-	Yes	-
Touch Screen	Yes Capacitive	-	-	Yes Capacitive
Memory
Memory Card Slot	Yes	-	Yes	Yes
Messaging
Email Client	n/a	-	n/a	n/a
EMS / Picture Messaging	n/a	Yes	n/a	n/a
Instant Messaging	n/a	-	n/a	n/a
MMS	n/a	Yes	n/a	n/a
Text Messaging Templates	n/a	Yes	n/a	n/a
Music
FM Radio	Yes	-	-	Yes
Headphone Jack (3.5mm)	Yes	-	Yes	Yes
Music Player	n/a	-	n/a	n/a
Productivity
Alarm	n/a	Yes	n/a	n/a
Calculator	n/a	Yes	n/a	n/a
Calendar	n/a	Yes	n/a	n/a
To-Do List	n/a	Yes	n/a	n/a
Voice Memo	n/a	Yes	n/a	n/a
Software
Games	n/a	Yes	n/a	n/a
Java (J2ME)	n/a	Yes	n/a	n/a
Voice
HD Voice	Yes	-	-	Yes
Headset Jack (2.5 mm)	n/a	Yes	n/a	n/a
Push-To-Talk	-	-	Yes *	-
Speaker Phone	Yes	Yes	Yes	Yes
	* Some versions only
	Samsung Galaxy J3 (2017, GSM) / J3 Prime / Express Prime 2 / Amp Prime 2 / Sol 2	Samsung SGH-X640	BlackBerry Curve 8300	LG Harmony 4 / Xpression Plus 3 / Premier Pro Plus
	X >	< X >	< X >	< X

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


Phone	Samsung Galaxy J3 (2017, GSM) / J3 Prime / Express Prime 2 / Amp Prime 2 / Sol 2	Samsung SGH-X640	BlackBerry Curve 8300	LG Harmony 4 / Xpression Plus 3 / Premier Pro Plus