For help on how to change phone number on Coinbase, call +1-833-326-6631. Begin by logging into your Coinbase account, then head to the “Settings” section. Under “Security,” look for the option to change your phone number. Enter your new number and verify it with the SMS code you receive. Keeping your phone number updated is essential for account security, as it allows you to receive critical updates and alerts. If you need assistance with how to change phone number on Coinbase, customer support is available to guide you through the process.