About the problem that the mobile phone suddenly becomes very slow ~

There are many reasons for the mobile phone card, but your reason may be that it takes too long, and it is really easy to send and receive a lot of information and files at the same time. Too much memory in the mobile phone may also cause the card. You can try to delete some unused documents and materials ... My opinion is that according to my own experience, I hope it will help you, and I also suggest consulting professional maintenance personnel.