After the unloading of Yunnan Information Pesticide Supervision Network, you can't get it without the verification code. What happened?

If it is a verification code, it is suggested to try sending and receiving again in another location to rule out whether it is caused by network reasons.

Check whether the mobile phone has downloaded the latest third-party software (security guards, system management). It is possible that the software intercepted the message. I suggest you try to uninstall it. Verify whether the SMS blacklist function information, More, Settings, Blocking Information, Blacklist, Whitelist, Blocking SMS and Blocking Information View are set in the mobile phone (the operation modes of different mobile phones may be slightly different).

The word captcha was first put forward by Louis Feng An, ManuelBlum, NicholasJHopper and JohnLangford of IBM in 2002. Carnegie Mellon University tried to apply for the word to become a registered trademark, but the application was rejected on April 2, 20081. A common verification code test is to let users input characters or numbers displayed on distorted pictures. Deformation is to avoid being automatically recognized by computer programs such as optical character recognition, thus losing its function. Because this kind of test is tested by computer, not by human like the standard Turing test, people sometimes call CAPTCHA the reverse Turing test.