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When using the compass, the magnetic phone case will have an effect, and it has no effect on other functions or internal data.
At present, most mobile phone devices in the market, there will be a number of very small but important role of magnets. The latest generation of Apple Watches, for example, uses a magnetic inductive wireless charging system. In daily use, the external role of the magnet is a static magnetic field, not an alternating magnetic field, so it does not produce an electromagnetic field and will not affect the use.
When using a compass, because the mobile phone needs a magnetic field to determine the direction. If there is a strong external magnet, it will affect the magnetic field of the phone. As a result, magnets can temporarily interfere with the digital compass and magnetometer in smartphones, which can cause directional misalignment.
For smaller magnetic magnets, such as the small magnetic block on the mobile phone case, magnetic mobile phone holder, etc., generally will not affect the function of the mobile phone. Samsung, Apple, millet and many other brands officially launched the holster is a magnet dormant sleeve, buckle the holster screen becomes black, open the holster, the screen becomes brighter. It can be seen that the smaller magnetic magnet has no effect on the circuit board GSM signal and GPS navigation signal.
Extended information:
The reason why magnets have an effect on mobile phones
1, the smartphone itself is an electronic device with a magnetic field, when the surrounding magnetic field is greater than the mobile phone itself, it will mess up the magnetic field of the electronic components of the mobile phone itself. Such as mobile phone antennas, vibrators, compasses, internal sensing equipment, etc., are magnetized.
2, the smart phone touch pad is generated by pressure induction electromagnetic circuit, so if the magnet that can affect it is around, the contact will certainly be insensitive.
3, there is the magnetic field repulsion, that is, the principle of physical opposites attract and repulsion.
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When using a mobile phone, a magnet on the back will not cause harm to people, and this movable magnet may affect the signal of the mobile phone, so it is recommended to replace other mobile phone cases when in use
It doesn't matter. It can be used. Many mobile phone cases for the convenience of mobile phone installation, it is the use of magnets as a stand. The mobile phone itself in the production, taking into account the impact of the magnetic field on the mobile phone, so have done anti-magnetic processing on the mobile phone. Generally, weak magnetism will not affect the mobile phone, and the magnetism above the mobile phone shell is relatively small, and it is not near the mobile phone antenna, so it will not have an impact.