How to cancel the monthly subscription of family SMS?

Get the owner ID card of the mobile phone card. If not, collect mobile payment records for three consecutive months. You don't need to ask them all. You can get at least one payment invoice (the kind made by the business hall) every month, and then you can go to the business hall to go through the transfer formalities and transfer the mobile phone card to your name. I don't need to say anything about it.