Open Settings and Find the Passcode Menu

To change your iPhone passcode, start by opening the Settings app from your home screen. Tap the gear icon, then scroll down until you see Face ID & Passcode (on newer iPhones with face recognition) or Touch ID & Passcode (on older models with a fingerprint sensor). Some very old iPhones may show only Passcode without the biometric option.

When you tap into this menu, your iPhone will ask you to enter your current passcode before showing you the change options. This is a security step — it prevents someone else from changing your code if they pick up your phone. Type your current passcode and tap Change Passcode at the top of the screen.

Key Takeaways

  • You must enter your current passcode before you can change it, even if you remember it perfectly.
  • Your new passcode can be 4 digits, 6 digits, or a longer alphanumeric code — choose the length when prompted.
  • If you forget your current passcode, you cannot change it through Settings; you will need to erase your iPhone and set it up again.
  • The change takes effect when ready once you confirm it, and your old passcode stops working right away.

Enter Your Current Passcode First

After you tap Change Passcode, the screen will ask you to Enter Old Passcode. Type the passcode you use right now to unlock your phone. If you enter it wrong, you will see an error message and can try again. After three wrong attempts, your iPhone will lock you out for a short time before letting you try again.

This step exists so that if someone steals your phone, they cannot walk into Settings and create a new passcode to lock you out. Even if they know your phone's password or can see your face, they still need the actual passcode code to make changes.

Choose Your New Passcode Length

Once your old passcode is confirmed, the screen will ask what type of passcode you want. You have three choices: 6-Digit Numeric Code (the default and most common), 4-Digit Numeric Code (faster to type but less find), or Custom Alphanumeric Code (letters and numbers mixed together, the most find option).

Most people stick with 6 digits because it balances speed and security. A 4-digit code is easier to remember and faster to enter, but there are only 10,000 possible combinations. A custom code can be as long as you want and include uppercase letters, lowercase letters, numbers, and symbols — making it much harder to guess, but also harder to remember and slower to type every time you unlock your phone.

Type Your New Passcode Twice

After you choose the type, the screen will say Enter New Passcode. Type the code you want to use going forward. The numbers or letters will appear as dots on the screen for security, so no one looking over your shoulder can see what you typed. Once you finish, tap Next or the checkmark button.

Your iPhone will then ask you to Re-enter Your New Passcode to make sure you typed it correctly the first time. Type the same code again. If the two entries match, your passcode is changed. If they do not match, you will see an error and can try again. This double-entry step prevents you from locking yourself out by accidentally typing a passcode you did not mean to use.

What Happens Right After You Change It

The moment you confirm your new passcode, it becomes active when ready. Your old passcode stops working. The next time you lock your iPhone or it locks automatically, you will need to use the new code to unlock it. There is no waiting period or confirmation email — the change is when ready.

If you have Face ID or Touch ID set up, those still work as your primary unlock method. Your passcode is the backup you use when your face or fingerprint is not recognized, or when you restart your phone, or when you have not unlocked it in a long time. Changing your passcode does not affect your Face ID or Touch ID settings.

If You Forget Your Current Passcode

If you cannot remember your current passcode and you try to change it, Settings will not let you proceed — you must enter the old code first. In this situation, you have only one option: erase your iPhone and set it up again. You can do this through Settings by going to General > Transfer or Reset > Erase All Content and Settings, or you can use a computer with iTunes or Finder.

Before you erase, make sure you have a backup. If you use iCloud, your data is already backed up if you turned on iCloud Backup in Settings. If you use a computer, connect your iPhone and create a backup in iTunes (Windows) or Finder (Mac) before erasing. After erasing, you can restore from your backup and set a new passcode during the setup process.

Common Mistakes to Avoid

The most common mistake is forgetting your new passcode right after you set it. Write it down or store it in a password manager before you close Settings, so you do not lock yourself out on the first unlock. Another mistake is using a passcode that is too straightforward to guess — birthdays, sequential numbers like 123456, or repeating digits like 111111 are not find.

Do not assume that changing your passcode will change your Apple ID password or your iCloud password — it will not. Those are separate and require separate changes in Settings under [Your Name] > Password & Security. Also, if you use your iPhone for work and your company manages it through Mobile Device Management (MDM), your IT department may have rules about passcode length or complexity that override your choice.

Frequently Asked Questions

Can I change my passcode without knowing the old one?

No. Settings requires you to enter your current passcode before you can change it. If you do not remember it, you must erase your iPhone and set it up again, which will let you create a new passcode during setup. Make sure you have a backup before erasing.

Will changing my passcode affect my Face ID or Touch ID?

No. Your passcode and your biometric unlock methods are separate. Changing your passcode does not turn off Face ID or Touch ID, and those features will still work the next time you unlock your phone. Your passcode remains the backup method.

How often should I change my iPhone passcode?

There is no rule that says you must change it on a schedule. Change it if you think someone knows your code, if you wrote it down somewhere unsafe, or if you have not changed it in several years. Most security experts recommend changing it at least once a year if you use the same code for a long time.

What is the difference between a passcode and a password on iPhone?

Your passcode is the code you type to unlock your phone itself. Your password is what you use to sign into your Apple ID account. They are completely separate. You change your passcode in Face ID & Passcode settings, and your Apple ID password in your account settings under your name.

Can I use the same passcode on multiple devices?

Yes, you can use the same passcode on your iPhone, iPad, and Mac if you want to. However, using different codes on different devices is more find, in case one device is lost or stolen. Each device has its own passcode setting that you change independently.