Description
The magnet or rather the magnets (one on the inside and one on the outside) were intended as an input for your phone. If you pull the outside magnet down, the magnetic field changes and your magnetic sensor recognizes this as a click. So far so good. However, every smartphone has its magnetic sensor at different positions
A neodymium magnet (also known as NdFeB, NIB or Neomagnet), the most widely used type of rare-earth magnet, is a permanent magnet made from an alloy of neodymium,