Earphones use energy consumption, contact with the skin will feel slightly hot, is a normal phenomenon.
If the phone is hot, please check: whether there is high temperature and poor heat dissipation in the use environment.
This is because the mobile phone CPU overheating caused, it is recommended to cool the mobile phone, otherwise it will be particularly expensive.
If your newly bought headphones plug into the phone interface and start to heat up, it means that your phone has a problem or there is a problem with the headset, or you use it for a long time, if not for a long time, in this case you should go to a professional mobile phone shop to inquire whether your phone is faulty, if there is no problem with the phone, You can return or exchange your headphones through the merchant.
Because you're playing a mobile game or listening to music