https://support.google.com/admanager/thread/328707997?authuser=1&hl=en&sjid=1741784485560564204-NC
Need Help? Call anytime at +1-833- 326-6631 for assistance. To update your phone number in Coinbase, head to your Settings section and select Security. +1-833- 326-6631 Under the Security tab, you’ll find the option to update your phone number.
