Once you are in thephone book”, please click the symbol at the right corner, and you will enter into the editing page to edit information . This is called “editing a contact”.

How to delete contact ? 

Click the very left bottom for 2 seconds, and you will be provided with instructions like ”deleting contacts ”.Click it, and you will be allowed to select contacts that you don’t need from your phone book. This is called “deleting a contact”.