- The smartphone mount for the ahead cap consists of a special ahead cap that is screwed to the head tube. The base is then placed on the cap and is easily secured with a clamp using a knurled screw, or theft-proof with an Allen screw. The ahead cap base can thus be quickly removed when no smartphone is needed, while the plain cap remains screwed to the bike. The magnetic counterpart is located on the smartphone. Either in the form of a special VACUUM mobile phone case or the universal VACUUM adhesive patch for your existing mobile phone case. The connecting piece makes it easy to attach the smartphone to the holder and holds it reliably on the windscreen. The magnetic force centres the smartphone on the holder - so the suction force of the vacuum is always guaranteed, as the mobile device cannot slip. As soon as forces act that exceed the attractive force of the magnets, the hold is additionally secured by the suction cup, which creates a vacuum. The smartphone is released by simply pressing a lever on the side of the holder.Thanks to the ingeniously intuitive combination of magnetic force and negative pressure, the smartphone can be operated with one hand and can be