How to Bind and Change Your Phone Number on Binance

15 min read 2026-03-30 Security Hardening

Binding a phone number is one of the foundational security measures for your Binance account. Once bound, both login and withdrawal operations require an SMS verification code, which significantly reduces the risk of unauthorized access to your account. You can complete the binding process in the security settings on the Binance official website, or do it directly through the Binance official app. Apple users can first refer to the iOS installation guide to install the app.

Why You Should Bind Your Phone Number

Phone verification is one of the most important security verification methods alongside Google Authenticator. After binding your phone number:

  • Logging in requires entering an SMS verification code
  • Withdrawals require SMS confirmation before they can be processed
  • Modifying security settings requires phone verification
  • You receive SMS alerts when suspicious login activity is detected

Some users feel that having Google Authenticator set up is enough, but this is not actually the case. Your phone number and Google Authenticator are two independent verification methods, and enabling both provides the strongest possible security. If you only have one method active, an attacker only needs to compromise a single layer of defense to gain control of your account.

How to Bind Your Phone Number

On the Website

  1. Log into the Binance website, click your profile icon in the upper-right corner, and navigate to the "Security" settings page
  2. Find the "Phone Verification" option and click "Enable" or "Bind"
  3. Select your country/region code and enter your phone number
  4. Click "Get Verification Code" — you will receive an SMS with a code
  5. Enter the 6-digit code from the SMS
  6. If you already have Google Authenticator or email verification enabled, you will also need to provide those verification codes
  7. Confirm to complete the binding

On the App

Open the Binance app, go to your personal center, navigate to Security Settings, then Phone Verification, and follow the prompts to enter your phone number and verification code.

What to Do If You Cannot Receive the SMS Verification Code

This is a problem many users encounter. Here are several solutions to try:

Check your phone signal: Make sure your phone has adequate network reception and is not in a basement or signal dead zone.

Check your spam filter: Many phones have security software that automatically intercepts messages from unknown numbers and moves them to a junk message folder. Check your spam or blocked messages to see if the code ended up there.

Wait a moment and try again: SMS messages can sometimes be delayed, especially international ones. Wait a few minutes before checking again.

Switch to voice verification: If SMS codes consistently fail to arrive, try the voice call verification option instead. In some areas, SMS delivery channels can be unreliable, but phone call verification is generally much more dependable.

Check for carrier blocking: Some mobile carriers block international SMS messages by default. Contact your carrier to confirm whether this restriction exists on your account, and if so, ask them to enable international SMS reception.

What to Do If You Changed Your Phone Number

If you have switched to a new phone number, you need to update the binding on your Binance account. There are two scenarios:

Your Old Number Still Works

If you can still receive SMS on your old phone number (for example, if you have not yet cancelled the line), the process is simple:

  1. Log into Binance and go to Security Settings
  2. Find Phone Verification and click "Change"
  3. Verify your identity using the old phone number by entering the SMS code it receives
  4. Enter your new phone number and verify it
  5. The change is complete

Your Old Number No Longer Works

If your old phone number has been cancelled or transferred to someone else, you can no longer receive verification codes on it. In this situation, you need to:

  1. Go to the Binance Help Center and submit a request to change your phone number
  2. Upload the required identity verification materials as instructed (ID photos, facial recognition, etc.)
  3. Wait for the Binance security team to review your request
  4. Once approved, the old phone number will be unbound, and you can then bind your new number

This process typically takes 1 to 3 business days, depending on the review queue.

Phone Number Security Best Practices

Do not use a number that is about to expire: If your phone plan is close to expiring or you are planning to switch numbers, update your Binance binding to your new number before cancelling the old one.

Be aware of SIM swap attacks: There is a type of attack called a "SIM swap" where scammers use social engineering to convince your mobile carrier to transfer your number to their SIM card, allowing them to intercept your verification codes. It is recommended to set up a security PIN or password with your carrier to prevent anyone from impersonating you and making changes to your account.

Do not publicly share your phone number: Especially on social media platforms and forums, never publicly post the phone number you use for your Binance account.

Never share SMS verification codes with anyone: No matter who asks for your SMS code, never provide it. Binance staff will never ask you for a verification code under any circumstances.

How Phone Verification and Google Authenticator Work Together

The most secure approach is to enable both phone verification and Google Authenticator simultaneously. This ensures that every sensitive operation requires passing through two independent verification layers, dramatically increasing the security of your account.

Some users find it inconvenient to enter two different verification codes every time. That feeling is understandable, but when real money is on the line, spending a few extra seconds is absolutely worth it. Your Binance account holds genuine financial assets — security is simply not something you should cut corners on.

Security Reminder

Binding your phone number is just one component of a comprehensive security strategy. It is strongly recommended that you enable all available security features on the Binance official website, including Google Authenticator, anti-phishing code, and withdrawal whitelist. When using the Binance official app, always download updates from official channels only, and freeze your account immediately if you encounter any suspicious activity.

Conclusion

Binding your phone number is a fundamental security measure that takes just a few minutes to complete. If you change your number, remember to update the binding promptly — you do not want to find yourself unable to receive verification codes when you need them most. When it comes to security, every additional step you take is one more layer of protection for your assets.