How to insert a SIM into your OPPO Find X3 Pro

Find the opener for the SIM holder. Insert the opener into the small hole in the SIM holder.

Remove the SIM holder from your phone.

Turn your SIM as illustrated in the first SIM holder and place it in the SIM holder.

Turn your SIM as illustrated in the second SIM holder and place it in the SIM holder.

Slide the SIM holder into your phone.