GamerCore
Android Enthusiast
The SD card and SIM card are located in the same slot, right on top of the Moto G5 Plus. Simply insert the included SIM card removal tool that came in the box (or use a small paper clip) and press it firmly inside the hole until the tray pops out slightly. Pull the tray out with your fingers and on the front you'll find a spot to place your SD card (it's clearly labeled as "SD"). Place your SD card inside until it firmly snaps into place. Once you're done, insert the tray back inside the slot until it's completely flush with the device.
At this point you'll see a notification asking if you'd like to use the phone as portable storage or internal storage. If you just want to use the SD card to store photos, videos, and other media downloaded to the device, select portable storage.
From there you'll need to set up apps to change their default save location to your SD card instead your phone's internal storage (not all apps support this feature). In the Camera app, this can be done by opening the app and swiping to the right to open up the camera settings. From there select Storage and change it from Phone to SD card.