Insert or Remove the SIM and SD Card on the Galaxy S9|S9+

You can use the Sim ejector tool that came in the box of your Galaxy S9 and Galaxy S9+ to insert a Sim card and SD card into your device. This is helpful if you want to expand the storage capability of you S9 or S9+ with a, sold separately, SD memory card. It also helps if you need to transfer SIM cards in an unlocked Galaxy S9 or S9+.