1. Insert a screwdriver between the mirror and the base.

2. Push the base pin down to remove the rearview mirror.
Rearview mirror
Rearview mirror installationMazda 6 Service Manual: Cell Phones
WARNING
Please comply with the legal regulations concerning the use of communication
equipment in vehicles in your country: Use of any electrical devices such
as cell phones, computers, portable radios, vehicle navigation or other devices
by the driver while the vehicle is moving is dangerous ...
Mazda 6 Service Manual: Locking, Unlocking the Doors
NOTE
The system may not operate if you are too close to the windows or door
handles.
If the key is left in the following areas and you leave the vehicle,
the doors may be locked depending on the radio wave conditions even if the key
is left in the vehicle.
Around the dashboard
...