With the included nanofoil you have the possibility to apply the product on a very smooth, reflective surface, e.g. glass.
The nanofoil should not be used on rough surfaces, such as a silicone cover, in order to ensure a secure hold.
It is also important that the substrate is free of dirt and grease so that the adhesive can hold securely. If you have cleaned the back of your smartphone with a cleaning agent just before gluing the nanofoil, we recommend that you wait at least two minutes before applying the nanofoil.