Yellow links always appear on my mobile phone. Is it poisonous?

Is it a short message, or a link pops up for no reason, or is it recommended by other software? If it pops up a color-changing link for no reason, it may be poisoned. If it is the other two cases, it should not be poisoned. Install an antivirus software to prevent some spam messages. If it is confirmed that it is poisoned, it is best not to use it. Refresh your mobile phone to avoid stealing the account password in your mobile phone, such as Alipay and WeChat.