Can SMS make telecom traffic packets take effect immediately?

Yes, but you need to know the opening requirements of operators in advance. Some of them are effective immediately, but the specific deduction and traffic usage will be adjusted according to the opening time. For example, if you open a 500m and rent 30 yuan monthly, today it is 13, then you may actually use 283M, and then you will deduct the fee of 17 yuan. It is best to switch to manual service to determine the SMS recovery code, or pay attention to the operator's WeChat and then bind the account, so that the traffic can be determined by the subscription number.