Why can't Samsung i9 100 add widgets?

Dear Samsung users, through your description, I suggest you: 1. Try again after restarting your phone. 2. After uninstalling the recently installed third-party software, observe and initially rule out whether it is a software conflict, such as mobile phone housekeeper, games and other software. 3. Back up mobile phone data (phone book, SMS, multimedia files, etc.). ) and restore factory settings (enter phone settings-reset/privacy/private-restore factory settings). If the problem of restoring factory settings still exists, it is recommended to send the mobile phone to the nearest Samsung service center for testing and further processing. For the address and contact information of the service center, please visit. If you have any comments, suggestions and comments, please click: support.samsung.com.cn/survey.