What does it mean to have a safety warning sign on your mobile phone?

It is normal to have such a hint, not necessarily a virus problem. For example, if you connect to an insecure WIFI network, the security software will also prompt you.

So, it depends on what you are doing. I suggest you choose an antivirus software with strong security protection, such as Tencent Mobile Manager.

The software supports virus protection and killing, payment protection, QQ/ WeChat protection, etc.

If you encounter some uncertain security tips in your daily life, you can do a security scan of the system through virus killing.

Open Tencent mobile phone housekeeper-protection monitoring-virus killing.