To verify your phone number:
After verifying your phone number, you can manage text message notifications by clicking your name in the top-right corner of airbnb.com and selecting Account followed by Notifications. As always, standard message and data rates may apply for any calls or messages sent or received. For questions about these rates, get in touch with your phone provider.
Having a verified phone number gives your hosts, guests, and Airbnb a way to contact you about your reservations or your account. You might be asked to verify your phone number when making reservations or listing your space. You also need a verified phone number to complete Verified ID.