Before Feixin promotion, China Mobile internally discussed whether to charge a monthly function fee. However, at the beginning of the promotion, they abandoned this idea. Although users are charged for sending SMS messages, the price of 0.1 yuan per message is clear to users. After using Feixin, SMS messages are not charged, but data traffic is invisible and uncontrollable for most users, which may become a point of criticism regarding charges in the future. However, people from China Mobile on site indicated that they will exempt Feixin-generated GPRS traffic fees after October.