Recently, mobile phones often receive text messages saying that their phones are flawed or poisoned. The number shows the IP address. Is my mobile phone poisoned?

This is called service information. It is best not to open it. It's usually a lie. After you open it, your phone bill may soon be gone, and the deduction is extremely severe. There are also some links to viruses. If your mobile phone is a smart phone, clicking it is likely to be poisoned. Some of them are sent by mobile service providers, but they are basically useless. It's all news or advertisements. It is recommended to close the service information: menu-information-options-settings-service information-close-OK.