How to modify the mobile phone number of Mu Tong Talent Network?

You can press and hold the contact you want to modify and select Edit Contact in the pop-up window. Considering that the old number will reappear after the phone is turned off, you can write down the new number with a pen first, then press and hold the contact, and choose to delete the contact in the pop-up window. At this time, there will be a card contact and a mobile phone contact. You can check both before deleting them, thus completely deleting the number of this contact in all positions, and then deleting the new number just written.