You can use Tencent mobile phone housekeeper to clean it up. It has a special one-click optimization function, and you can clean up the garbage with one click. But don't worry, it will only clean up the unnecessary data release space in your system and won't delete your important information. In addition, remember to use Tencent Mobile Manager to close the background program when using the mobile phone, which can also effectively improve the speed of the mobile phone.