Rare earth magnets are also used for various functions in the cell phones that have become indispensable in our lives. ... In flip phones, rare earth magnets are also used in the sensors that detect when the phone is opened or closed and that automatically switch the LCD screen On/Off and reduce the drain on the battery.

Can a magnet ruin a phone?

How can a magnet destroy a phone? The strong magnetic force from a magnet has the ability to get into a smartphone and interfere with the digital compass on the interior. Additionally, these magnetic fields can mess with the magnetometer and throw off the entire device.

What part of the cell phone uses magnets?

External smart phone uses for NdFeB magnets include ear buds, earphones and wall chargers –the kind of wall chargers that use magnetic connectors. Since speaker designs use 3-5 magnets per speaker, the quantity of magnets-per-phone adds up quickly.