https://eheimsupport.zendesk.com/hc/en-us/community/posts/38981655813011-How-do-I-update-my-phone-number-on-Coinbase-1-833-590-0301

Should you need help with any other 1-833-590-0301 changes to your phone number or run into issues during the verification process, don’t hesitate to contact Coinbase support at 1-833-590-0301. They can assist you with any difficulties that may arise when updating your contact information to ensure the security of your account.
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