Sign in to YouTube with the account you want to verify
Go to YouTube Studio
Click Settings
Click Channel
Click Feature eligibility
Find the option for Intermediate features or phone verification
Click Verify phone number or Verify
Choose your country
Select whether to receive the verification code by text or voice call
Enter your phone number
Enter the verification code sent to your phone
Submit the code to complete verification
If prompted, complete any additional steps for advanced or full verification
Check that your channel now shows verified features enabled