LinkedIn Account Guide: Sign-Up, OTP and Recovery

Should you use a virtual number for LinkedIn at all?

If this account matters for work, use a number you will still have in a year. Full stop.

If you are only testing sign-up, or setting up an account you do not need to keep, a one-time SMS number is an option. An option, not a guarantee. LinkedIn's own help page on phone verification at sign-in is blunt: "Cell and landline phones are supported. VoIP numbers aren't."

Whether LinkedIn accepts any virtual or VoIP number is LinkedIn's decision and can change. No SMS reception service can guarantee acceptance, and this article will not pretend otherwise.

That sentence is the whole decision. A code that gets you in today is not access next year.

What happens when LinkedIn asks for your number?

LinkedIn's own help page says you may be asked to provide your phone number when you sign up, and you can also add one after an account is created to help keep it safe.

For a LinkedIn sign up phone number step, the outline is the same in most cases:

• Create the account and keep the login email current, because that email is your fallback when the phone route fails.
• Add the phone number with the correct country code.
• Request the code once, then enter the code LinkedIn sends. If two codes turn up, use the newest one.
• On an existing account, the route is different and more specific: Me, then Settings & Privacy, then Sign in & security, then Phone numbers. LinkedIn first sends a verification code to your primary email, then asks for the country and the new number, then sends the SMS code. You may also be asked for your password, or to approve the change through the LinkedIn app.
• When adding a number, LinkedIn also offers a "Call me with the code" option if the SMS does not arrive.

One quiet fact: a confirmed phone number is not visible by default, and you can separately choose to display it in the Contact Info section of your profile.

New to one-time numbers in general? The guide on how disposable numbers work covers the basics before you spend anything.

Why is my LinkedIn verification code not received?

Code sent, nothing arrives. What now?

Start with the boring checks, before you blame the number. Recheck the country selector and every digit. Use the full international format, not a local format with a leading zero pasted in. Wait before you resend. Request one fresh code, and use only that newest code - older codes arriving late are a classic self-made mess.

Then check the number type itself. If the number is VoIP, LinkedIn's own sign-in page says it is not supported. A resend will not fix a type LinkedIn does not accept.

LinkedIn frames the sign-in prompt as a security challenge, not a delivery glitch: it shows the challenge when it detects potential unauthorised access, and when it needs to prove you are not a robot. Hammering resend, or switching numbers and networks in quick succession, is the wrong response to a security check. Slow down, use the email route where LinkedIn offers it, and fix one variable at a time.

If you are using an online SMS dashboard, refresh that inbox and trust the newest message, not the first one you see.

The part most guides skip: losing the number loses the reset

And here is where a successful code turns into a problem.

LinkedIn recommends adding at least one mobile phone number so you can reset your password if you are locked out, and when you add your first mobile number, it is automatically enabled for that purpose. Only one mobile number at a time can be used for sign-in problems, and your number must be verified before it can be used to reset your password.

Read that backwards. The number that got you in becomes the number that gets you back in. SMSOTPS sells one-time SMS reception numbers. One-time means the number is for that code, not for your LinkedIn life afterwards.

LinkedIn states the consequence plainly: if you only have a phone number registered to your account, but have lost access to the phone number, you will not be able to reset your password. You will have to verify your identity to regain access.

There is a second trap in the same settings page. You may not be able to remove a phone number if it has been used to establish two-factor authentication. You have to disable two-factor authentication before you can remove the number. So a number you planned to swap out later may not swap out cleanly at all.

A phone code is not identity verification

LinkedIn is known for restricting accounts. A restriction is not fixed by receiving another SMS code.

Identity verification, where LinkedIn offers it, runs through its verification partner and asks for a government-issued ID and a selfie, completed in the LinkedIn app. A temporary number cannot stand in for that. It only handles the phone step.

That is why the order matters. Do not treat the SMS code as proof of who you are. Treat it as proof that a number received a text, and nothing more.

The same logic applies to two-step verification. LinkedIn offers two methods - text (SMS) authentication and authenticator app verification - and LinkedIn recommends the authenticator app as the preferred method.

If you used a temporary number to get in, set up the authenticator app while you are still signed in. That is the move that breaks your dependence on a number that will expire. Keep your recovery email current too, and use an email you control long-term, not a work address that disappears when you change jobs.

If you still use a one-time number, do this before you close the tab

Do not request the code and walk away. While you still have access, set up the authenticator app, confirm your login email, and write down which number you used and when your access to it ends, so a future login failure is a known problem, not a mystery.

If you later add a lasting number, set that number as the one used for password resets, and only then think about removing the old one - remembering the two-factor rule above.

For payment, refund, or balance rules for SMSOTPS, see the FAQ and terms - those rules are not restated here.

Before you request a code, answer one question: will you still have this number when LinkedIn asks again? If the answer is no, do not build a career account on it.