If you do not use "RP Router Protection"

the wave trap is placed in the shell

No impact on coverage even with poor reception

We use protective film for these models

Skyddsglas 9H iPhone 8 Huawei P20 If you do not useProtective glass 9H is the name of our series of protective glass for iPhone and Samsung in tempered glass of the highest quality. The glass is ultra transparent and only 0. 33 mm thick and therefore perfect for high resolution displays. With its exact fit, it gets a good transparency and a protection that is very easy to apply without any bubbles. Perfect protection for the screen against hard bumps and scratches Premium quality hardness 9H Extremely