Yahoo! Mail can be a good way to keep in touch with others and exchange email, but sometimes your Yahoo! profile may reveal more information than you like -- such as a mobile contact number. You may also have contacts for whom you have now-defunct mobile contact numbers listed and would like to delete those. You can easily delete mobile contact numbers, whether your own or those of friends, by editing profiles in your Yahoo! Mail account.
For Your Contacts
Log into your Yahoo! Mail account.
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Click "Contacts" on the left side your Yahoo! Mail home page.
Click the name of the contact whose mobile number you want to delete.
Click "Edit." Scroll down to the third category, "Phones."
Place your cursor directly after the mobile phone number in the "Mobile" field.
Press "Backspace" until the number is deleted.
Press "Save" to save your changes.
Log into Yahoo! Mail.
Click the small arrow next to "Hi (your name)" to activate a drop-down menu.
Click "Account Info" in the drop-down menu. You may be prompted to provide your Yahoo! Mail password again at this point.
Click "Edit Profile Details." Scroll down to "Contact Information."
Click "Go To Account Info," which is directly across from "Contact Information." You may be prompted to enter your Yahoo! Mail password again at this point.
Place your cursor directly after the phone number in the "Mobile" field.
Press the "Backspace" key until the number is deleted.
Click "Save Changes" at the bottom right of the screen.