What does it mean to choose Shanghai Traffic Edition at will?

A traffic package launched by China Mobile is mainly aimed at users who use China mobile network in Shanghai. According to the information of China Mobile official website, choosing Shanghai Traffic Edition at will is a traffic package launched by China Mobile, which is mainly aimed at users who use China mobile network in Shanghai. The core feature of choosing Shanghai Traffic Edition at will is that you can freely choose traffic, call and SMS resources according to your personal needs, and users can choose the package that suits them according to their actual situation, thus saving money.