Before you proceed, you need InTouchApp installed on your phone.
How to share phone contact book with another contact?
Step 1 - Open InTouchApp on your phone.
Step 2 - Click on Contacts Tab at the bottom bar.
Step 3 - Search for the contact with whom you want to share your contact book.
Step 4 - On the top right corner of the screen, click on the overflow icon .
Step 5 - You will see Connected, click on the same.
Step 6 - You will be Network sharing > Select Basic/Full > Click on Done.
The whole contact book gets shared with the contact.