Is it reliable for mobile to call and say that sending traffic requires verification code?

The mobile phone says that the verification code to send traffic is not reliable. This method is unreliable for the following reasons:

1, phishing scam: criminals forge similar short messages, impersonate operators to send verification codes, and induce users to click on malicious links or provide personal information, thus implementing phishing scams. Users are prone to credulity and input verification codes or personal information, resulting in personal information disclosure or financial loss.

2. SMS forgery: Hackers or criminals use technical means to forge the SMS of operators, so that users mistakenly think it is a real promotion activity and provide verification codes. This way makes users misunderstand and then suffer the risk of fraud.

3. SMS hijacking: Malware will hijack the SMS function of the mobile phone, so that users can't receive the real verification code SMS, and the received verification code will be obtained by hackers. In this way, hackers can ask for discounts such as traffic as users, causing losses without users' knowledge.