The meaning of Address book in dream | Dream interpretation
If you see or use an address book in your dream, this is a lucky time for flirting with someone who catches your eye! To see a specific phone number in your dream may suggest that you need to make contact with someone and reach out for help.
If you couldn’t find something in your address book, you need to start being more independent and responsible.
If you wrote a new address or phone number in it, be careful with money - you will be prone to losing it on bad investments and unsatisfying purchases for the next little while.
If the address book in your dream belonged to somebody else, this is a warning to be more discreet in confiding your personal affairs to others.