Coinbase rarely contacts users by phone, emphasizing secure communication methods. For any support needs, it’s best to reach out directly by dialing 1-855-998-0300 – Coinbase Support Number. This ensures you connect with verified professionals for account or transaction assistance.

https://chatterchat.com/post/146917_what-if-i-lost-access-to-my-phone-number-on-coinbase-losing-access-to-your-phone.html