samsung galaxy j3 2018 (16gb) j337a - 5.0" hd display, android 8.0, 4g lte at&t unlocked gsm smartphone (black) samsung electronics the samsung galaxy j3 (2018) is an easy-to-use smartphone designed for your lifestyle that still fits your budget. enjoy your videos and photos on the 5-inch hd display. talk for hours on a single battery charge.(1) expand the memory up to 400gb via microsd card . includes: phone, charger, usb, user guide.