Zone 1: In the case of metallized windshields (heat protection), the metal particles interfere with the card’s radio waves. On windshields like these, there is a section in the middle in the area around the rear view mirror which is excluded from the metallization. The PayByPhone Card can be attached here.
Zone 2: With heatable windshields, the area on the lower left of the driver’s side is suitable for the PayByPhone card.
Zone 3: You have neither a metallized nor a heated windshield? Then the card can be mounted on the top left of the driver’s side.