The magnetism of this magnetic buckle has no effect on mobile phone operation and will not damage the mobile phone. However, if the button of the defective mobile phone cover is raised excessively or the lining is not secure, it may cause mechanical damage to the mobile phone. Waterproof magnetic buckle through the magnetic permeability data to make the magnetic field line form a loop principle. A semi-closed electroplated metal shell is installed on a strong magnet to form a gathering of magnetic field lines and strengthen the magnetic force. And after high frequency pressing processing, the magnetic buttons are packaged with environmental protection materials, so that the product is waterproof and rust-proof, beautiful and generous, so that the service life of the magnetic button can be used for a long time. Hello, generally not, but it does heat up when charging, which is not good for the battery, and taking off the phone to charge has advantages for battery maintenance.