How to cancel someone else's mobile phone to display express information?

Just mark the platform cancellation. Take Taobao as an example, you need to do the following:

Open the mobile phone Taobao and click "My Taobao" at the bottom. Click "Rookie" in the function bar in the middle of the personal page. Click "My" at the bottom of the rookie interface. Click the green "Mobile Number Management" in the middle function bar. Select the mobile phone number to be operated from the associated mobile phone numbers, and click "Settings". Select "Don't let the other party see my bag" in the privacy settings, and finally click "Finish setting".

If it is not for the above reasons, you can find out which courier your number belongs to and contact the courier company to ask them to find a way to cancel your number tag.