This article explains how to replace the SIM card and memory card in a Samsung Galaxy S7 or S7 Edge.

The SIM and memory cards are located in the same place on both devices: the top edge of the phone, which is marked by a thin rectangular slot with a small hole. Make sure your phone is turned off before you begin.

Locate the eject pin that should have come with your phone (if you purchased it new).

Insert the eject pin into the hole and push until the tray pops out. Gently pull on the edges of the tray to remove it.