Neodymium magnets may damage mobile phones for the following reasons:

I. Effects on electronic components

1. Interference with compass: The compass in the mobile phone relies on the geomagnetic field to work. The strong magnetic field generated by the neodymium magnet will interfere with the compass, causing it to deviate from the indicated direction, or even fail to work properly when close to the neodymium magnet. Even if the neodymium magnet is removed, sometimes it may take a while for the compass to return to normal, or even a permanent deviation may occur.

2. Affecting sensors: There are many sensors in mobile phones, such as gravity sensors, light sensors, etc. Although they generally have a certain degree of anti-interference ability, the strong magnetic field of neodymium magnets may cause these sensors to misjudge or work abnormally. For example, after the gravity sensor is interfered with, the automatic rotation function of the mobile phone screen may be disordered.

3. Interference with circuit: The circuit system inside the mobile phone is very complex and delicate. The magnetic field of the neodymium magnet may generate induced current in the circuit or interfere with the transmission of electronic signals, which may cause the mobile phone to freeze, restart, no signal, etc. In severe cases, it may damage the chip or other electronic components of the mobile phone.

II. Impact on storage media

1. Traditional storage devices: For devices that use mechanical hard disks as storage media, strong magnetic fields may cause data loss or damage. However, most mobile phones now use flash memory chips to store data. Generally, the magnetic field generated by normal contact with neodymium magnets is not likely to directly damage the data in the flash memory chip, but in the case of extremely strong magnetic fields or long-term contact, there is also a risk of data loss or damage.

III. Impact on wireless charging

1. Interference with charging signals: Mobile phone wireless charging uses the principle of electromagnetic induction. The magnetic field of neodymium magnets may interfere with the magnetic field signal of wireless charging, resulting in reduced charging efficiency, unstable charging, or even failure to charge normally.

2. Damage to charging coil: If the distance between the neodymium magnet and the mobile phone wireless charging coil is too close and the magnetic field strength is large, the current in the charging coil may change abnormally, which may cause the charging coil to overheat or even damage the charging coil for a long time.

However, if the neodymium magnet is kept at a certain safe distance from the mobile phone (generally recommended to be more than 10 cm), and the magnetic field strength is not particularly extreme, the possibility of causing obvious damage to the mobile phone is relatively low. However, in order to ensure the normal use and life of the mobile phone, you should try to avoid close contact between the mobile phone and strong magnetic objects such as neodymium magnets.