How to restore the mobile phone number when it becomes empty?

If the mobile phone number becomes empty, you can consider the following ways to try to get it back:

1. Call customer service and ask if the number can be restored. According to the customer service guide, it may be necessary to provide identification and related supporting materials. If you can't recover the number, you can try other ways.

2. Go to the local business hall for consultation. If the number has been cancelled and activated by others, you can try to buy it or negotiate other ways.

3. Call the operator's customer service phone and consult through manual service. If you need to provide identification and related documents, you can try to restore the number.

4. If the number is cancelled for more than a certain period of time (such as 60 days), you may need to buy a new mobile phone number.

It should be noted that each operator's regulations may be different, and the specific operation methods may also be different. When trying to recover the number, it is recommended to consult professionals first and read the relevant regulations carefully to ensure that your rights and interests are protected.