How do I change my phone number on Coinbase?

I'm a user of Coinbase and recently had to change my phone number. Could you please guide me through the steps to update my phone number on the platform? I've heard it's important for security and verification purposes, so I'd like to ensure my account remains secure. Could you explain in detail the steps I need to take, from logging into my account to confirming the change? Additionally, would there be any potential issues or delays in the process that I should be aware of? Thank you for your assistance in this matter.