Amazon.com: Cellphone Card Socket SIM Card Tray + Micro SD Card Tray for Galaxy J3 Single SIM / J330 & J5 Single SIM / J530 & J7 Single SIM / J730 :
Galaxy J3 (2016, Dual Sim) | Samsung Support South Africa
Amazon.com: Samsung Evo Plus 64GB MicroSD XC Class 10 UHS-1 Mobile Memory Card for Samsung Galaxy J3 J1 Nxt Ace A9 A7 A5 A3 Tab A 7.0 E 8.0 View On7 On5
Amazon.com: SanDisk 64GB Ultra Micro SDXC Memory Card Bundle Works with Samsung Galaxy J3 (2018), J4, J6, J8, Amp Prime 3 Phone UHS-I Class 10 (SDSQUAR-064G-GN6MN) Plus Everything But Stromboli (TM) Card