You can install a Tencent mobile phone housekeeper.
Tencent mobile phone housekeeper-security protection-harassment interception-settings-blacklist.
Tencent mobile phone housekeeper is divided into two parts: one is management and the other is security.
Management includes cache cleaning, process/startup management, traffic monitoring, garbage cleaning, battery management, resource downloading, etc.
Security includes harassment interception, virus detection, private space, mobile phone theft prevention, payment security and so on.
There are synchronization assistants and micro-cloud disks in the cloud, which can help backup address books, short messages, call records, photos, files, videos, music and so on.