Why can't Hefei Chaohu social security card be updated for three generations successfully?

Because it can only be updated in Chaohu city. Foreign social security can't change three generations of social security cards locally. The replacement of social security card must be in the household registration place, so the third generation of Chaohu social security card can only be declared in the social security bureau of the household registration place, and cannot be updated in Hefei. The third-generation social security card has all the service functions of the second-generation card, and also has the functions of contactless reading and writing, biometrics and so on. Compared with the second generation social security card, its usability, convenience and security have been greatly improved.