Is the SMS package redeemed in mobile integral valid within one month from the date of redemption or will it end at the end of the month?

You can go to mobile phone official website to check the instructions. The following is an excerpt from the relevant instructions:

The SMS package is valid for 1 month and ends on the last day of the effective accounting period. The effective time is the next accounting period after the customer's successful exchange or donation. There are two situations in the customer's next accounting period: (1) the first day of the following month for the customer who has not started the dynamic accounting period; (2) For customers in dynamic accounting period, the closing date is next month.