How to insert a SIM into your Apple iPhone 13 Pro Max

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 so the angled corner of the SIM matches the angled corner of the SIM holder.

Please note that your phone only supports nano SIMs.

Place your SIM in the SIM holder and insert the SIM holder into your phone.