Hello, China Mobile activities are not the same, but all the same, charge the fee to send the fee activity is there, charge one hundred to send one hundred, send the fee to the account at that time, you charge the fee to be returned monthly, 10 yuan per month, to open a data service for three months, such as traffic package upgrade, mobile phone report, etc., and the most important point, participate in the activity has a guarantee, If you can not use up the minimum guarantee so much, therefore, the monthly consumption does not reach the minimum guarantee amount is not recommended to participate in similar activities.