The phone number is not yours, but the ID card is yours, so it is ultimately related to you, and you can't escape the responsibility.
It is relatively simple to open a flower garden. Generally, you only need to fill in your personal data on your mobile phone to open a flower garden. Simply using the flower garden does not affect the personal credit report, but if it is seriously overdue, this overdue record will be reported to the central bank's credit information system, which means it will affect the personal credit information record.