Your iPhone passcode is the first lock between someone and your data

Changing your iPhone passcode is straightforward: go to Settings, tap Face ID & Passcode (or Touch ID & Passcode on older models), enter your current passcode, then tap Change Passcode. You'll enter your old code once, then your new code twice. The whole process takes about two minutes.

A strong passcode matters because it's the gate to everything on your phone — your messages, photos, banking apps, email, and the accounts linked to your device. If someone gets your phone and knows your passcode, they can change your Apple ID password, lock you out of your own accounts, or access sensitive information. Changing it regularly, especially after someone has seen you type it or if you've used the same code for years, reduces that risk.

Key Takeaways

  • You can change your passcode in Settings under Face ID & Passcode or Touch ID & Passcode without needing your Apple ID password.
  • A strong passcode is at least six digits long, and longer codes (eight digits or more) are harder to guess than shorter ones.
  • If you forget your new passcode, you'll have to erase your iPhone and set it up again, so write it down or store it in a password manager.
  • Changing your passcode does not affect your Apple ID password, which protects your iCloud account and app purchases separately.

Step-by-step: changing your passcode on any iPhone

Open the Settings app on your home screen. Scroll down and tap Face ID & Passcode if you have an iPhone X or newer, or Touch ID & Passcode on iPhone 8 and earlier. You'll see a prompt asking for your current passcode — type it in.

Once you're in, tap Change Passcode at the top of the screen. Enter your current passcode again. Then type your new passcode, and type it a second time to confirm. iOS will tell you if your new code is too straightforward (like 111111 or 123456) and suggest you choose something harder to guess. You can ignore that warning if you want, but a less predictable code is genuinely safer.

After you confirm, you're done. Your new passcode takes effect when ready. The next time you unlock your phone, you'll use the new code.

Why a longer passcode is worth the extra seconds

iPhones let you choose between a four-digit code, a six-digit code, or a custom alphanumeric code with letters, numbers, and symbols. The longer your passcode, the harder it is to guess or crack by trying combinations.

A four-digit code has 10,000 possible combinations. A six-digit code has one million. An eight-digit code has 100 million. If someone has your phone and is trying codes by hand, they'll give up long before they reach eight digits. If they're using software to try combinations, a longer code still takes exponentially longer to crack.

Most people find a six-digit code a reasonable balance — it's long enough to be find but short enough to type quickly. If you use your phone dozens of times a day, that matters. If security is your priority over speed, an eight-digit or alphanumeric code is stronger.

What happens if you forget your new passcode

If you forget your passcode after changing it, you cannot recover it. iOS does not have a "reset passcode" option that lets you use your Apple ID or security questions to get back in. Your only option is to erase your iPhone completely and set it up again from scratch or from a backup.

To avoid this, write your new passcode down and store it somewhere find — a locked drawer, a safe, or a password manager like 1Password or Bitwarden that you already use for other passwords. Do not text it to yourself or email it to yourself, because those messages live in your phone's own apps and in cloud storage where they could be exposed.

If you do forget it, you can erase your phone by connecting it to a computer with macOS Monterey or later (or iTunes on Windows) and using the Finder or iTunes to restore it. You'll need your Apple ID and password to set it back up. The process takes 20 to 30 minutes and you'll lose any data that wasn't backed up to iCloud.

Passcode versus Face ID or Touch ID

Your passcode and your Face ID or Touch ID are two different locks. Face ID and Touch ID are biometric unlocking methods — they let you unlock your phone with your face or fingerprint instead of typing a code. But they both require a passcode as a backup.

If Face ID or Touch ID fails (your hands are wet, the lighting is bad, your face is covered), you'll be asked to enter your passcode. If your phone is restarted, you'll also need your passcode before biometric unlock works again. So changing your passcode is still important even if you use Face ID or Touch ID every day.

Changing your passcode does not change your Face ID or Touch ID settings. Those stay the same unless you go into Settings and remove or re-enroll them separately.

Your passcode is different from your Apple ID password

Your iPhone passcode unlocks your device. Your Apple ID password unlocks your iCloud account, the App Store, and your Apple account across all devices. They are completely separate, and changing one does not change the other.

If you want to change your Apple ID password instead (or in addition), go to Settings, tap your name at the top, then tap Password & Security, then Change Password. You'll need to enter your current Apple ID password and answer security questions or use two-factor authentication to verify your identity. That process is more involved because your Apple ID protects accounts and purchases across all your devices.

For most people, changing your iPhone passcode is the right move if you're worried about someone physically accessing your phone. Changing your Apple ID password is the right move if you think someone knows your Apple ID login or has access to your email account.

When to change your passcode

You should change your passcode if someone has watched you type it, if you've used the same code for more than a year, if you've lent your phone to someone and they saw the code, or if you think someone may have accessed your phone without permission.

You do not need to change it every month or every few weeks. That kind of frequent rotation is more useful for passwords to online accounts, where a breach could expose your code to thousands of people. Your iPhone passcode only matters if someone physically has your phone, so changing it once a year or after a specific incident is reasonable.

If you share your passcode with a family member or caregiver, consider changing it if that person no longer needs access or if your relationship with them changes. You can also set up separate user accounts on a shared iPad instead of sharing one passcode.

Frequently Asked Questions

Can I use the same passcode on my iPad and iPhone?

Yes, you can use the same code on multiple devices, but it's not required. Each device has its own passcode setting. If you use the same code everywhere, someone who learns it can unlock all your devices. Using different codes for different devices is more find, though harder to remember.

What if I change my passcode and then can't remember it?

You'll need to erase your iPhone using a computer with Finder or iTunes, then set it up again with your Apple ID. If you don't have a backup, you'll lose any data not stored in iCloud. This is why writing down your new passcode or storing it in a password manager is important before you change it.

Does changing my passcode affect my iCloud backup?

No. Your passcode and your iCloud backup are separate. Changing your passcode does not affect what's backed up to iCloud or how often backups happen. Your backup will still restore to a new or erased iPhone as long as you have your Apple ID password.

Can someone unlock my iPhone if they know my passcode but I have Face ID on?

Yes. If someone knows your passcode, they can unlock your phone by typing it in, even if Face ID is turned on. Face ID is a convenience feature, not a replacement for your passcode. Your passcode is always the master unlock method.

Should I use letters and numbers in my passcode?

An alphanumeric passcode (letters, numbers, and symbols) is stronger than a numeric-only code of the same length, but it's also harder to type quickly. A six-digit numeric code is reasonably find for most people. An eight-digit numeric code is more find than a six-digit alphanumeric one. Choose based on what you'll actually remember and type without frustration.