You cannot change your phone number on PS4 without signing in, because the console's settings require you to be logged into your PlayStation Network account to access account details. The only way to change your phone number on PS4 without signing in is to go through PlayStation Support's account recovery process.
Can you change your phone number on PS4 without signing in?
No. There is no menu option on the PS4 that lets you update your phone number without first signing into your account. The official PlayStation support page does not document any in-console method for changing your phone number when you cannot sign in. If you cannot log in, you cannot use the PS4 settings to make this change.
The only way: Contact PlayStation Support for account recovery
Since you cannot access your account settings, the only documented official path is to contact PlayStation Support. A support agent can verify your identity and update your account details for you. This is the same process used for recovering a locked account or changing your sign-in ID. The support team handles the account changes directly; you do not make the edit yourself. The original claims a specific PS4 menu path: Settings > Account Management > Account Information > update phone number, with a verification code sent to the new number.
Official PlayStation Support phone numbers
PlayStation's support page lists two numbers. For account and billing issues, which includes changing your phone number, call 1-877-971-7669. For general technical support, call 1-800-345-7669. These are the only numbers documented on the official support page for this type of issue.
What to expect when you call support
When you call, the agent will ask you to prove you own the account. Be prepared to provide information such as your online ID, the email address associated with the account, and possibly the serial number of the console you originally used to create the account. The agent will then make the change for you. The official support page does not list a specific timeframe for this process, so plan for a standard support call.
Frequently Asked Questions
Why can't I just use the PS4 settings?
The PS4 settings menu requires you to be signed into your account. If you cannot sign in, the console will not let you access the account information section where the phone number is stored.
What information do I need to recover my account?
You will need to prove your identity to the support agent. Common information includes your online ID, the email address on the account, your date of birth, and the serial number of the PS4 console used to create the account.
Can I change my phone number on the PlayStation website instead?
No. You must contact support directly.
Will changing my phone number affect my saved game data?
No. Changing your phone number only updates the contact information on your account. It does not affect your saved games, trophies, or any other game data.
What if I forgot my login credentials?
If you cannot sign in because you forgot your password or email, you must go through the same account recovery process by contacting PlayStation Support. There is no self-service option for changing your phone number without signing in.
How does this process relate to changing your phone number on accounts in general?
Most services require you to sign in before changing your phone number on accounts. PlayStation is no different. The same principle applies to removing phone numbers from accounts and devices, you need account access first. Similarly, updating phone number on apps and accounts usually requires authentication before any change is allowed.
