Select the Excel file and create a contact card.

1- Prepare your Excel file with column headings on the first line (as it is written on the application's homepage).
2- Map the fields corresponding to your Excel fields in your phone book
3- Press the Save to Phonebook button and that's it!

ADDITIONAL FEATURES:
For example, if you assign a 'TEST' prefix at the beginning of the namespace, when you call TEST while creating a group in social media applications, it will list the ones that start as TEST. In this way, you will be able to send a message without saving it in the phone book by adding it automatically from the excel file.