There will be a short message prompt when the package traffic runs out. Is there any carry-over traffic?

After the package traffic is used up, there will be no SMS prompting that there is carry-over traffic. According to the inquiry of China Mobile official website, after the account is issued at the beginning of each month, users are informed of the traffic carried forward from the last month's package through SMS. Instead of sending text messages after the package traffic runs out. Most packages that can be carried forward can only be carried forward for one month. The unused traffic last month can only be carried forward to this month, and it will be gone next month. Therefore, after the package traffic is used up, there will be no SMS prompting that there is carry-over traffic.