The SIM card is encased in a housing unit. In order to remove it, push left as written on the metal housing cover and it will snap loose and be able to be risen.

Place finger on metal housing. While applying a downward force, push the finger in the direction towards the edge of the phone. An arrow also indicated this direction

This housing case top will be on a hinge system. Put this top in the upper position and remove card with finger tips, or if necessary, tweezers.