iOS 17 Guide: How to Set Up a 4 Digit Passcode on iPhone

Setting up a 4-digit passcode on your iPhone is a straightforward process. Go to Settings, tap on Face ID & Passcode or Touch ID & Passcode, enter your current passcode, then select Change Passcode. Opt for Passcode Options, and choose 4-Digit Numeric Code. Enter your new passcode twice, and voilà! You’ve secured your phone with a 4-digit passcode.

After setting a 4-digit passcode, your iPhone will prompt you for this code to unlock your device, to confirm your identity for purchases, or to change your passcode settings. This adds a layer of security to your phone, ensuring that only you have access to your device and data.

You can also watch this video about how to set up a 4 digit passcode on iPhone for more information.


In an age where our smartphones are extensions of ourselves, security is paramount. We store a plethora of personal information on our devices, from contacts and appointments to photos and bank details. Ensuring this data is protected is crucial, and one of the most basic but effective ways to do so is by setting up a passcode. With the launch of iOS 17, iPhone users are given the choice of setting various types of passcodes, including the classic 4-digit numeric code.

While some may argue that a 4-digit passcode is less secure than a longer code, it strikes a balance between ease of access and security. Most importantly, it’s a familiar system that many users feel comfortable with. This article is perfect for anyone who values simplicity and quick access but still wants to keep their device secure. Whether you’re a parent setting up a child’s first iPhone, a senior who prefers a less complicated system, or someone who’s just nostalgic for the good old days of 4-digit passcodes, read on to learn how to use this feature in iOS 17.

How to Use a 4-Digit Passcode on iPhone iOS 17

Before we dive into the steps, it’s important to know that setting up a 4-digit passcode on your iPhone will help keep your device secure and prevent unauthorized access.

Step 1: Open Settings

Open the Settings app on your iPhone.

The Settings icon usually looks like a gear and can be found on your home screen. Tapping on this will lead you to a multitude of options to customize your iPhone experience.

Step 2: Access Face ID & Passcode or Touch ID & Passcode

Scroll down and tap on the option that says ‘Face ID & Passcode’ or ‘Touch ID & Passcode’, depending on your iPhone model.

You’ll be required to enter your existing passcode if you have one set up already. This step ensures that the person trying to make changes is the rightful owner of the device.

Step 3: Enter Current Passcode

Enter your current passcode to gain access to the passcode settings.

This is a security measure to prevent others from changing your passcode without permission.

Step 4: Select Change Passcode

Tap on ‘Change Passcode’ to begin setting up a new passcode.

This will prompt you to enter your new desired passcode, but before you do that, we’ll need to select the type of passcode you want to set up.

Step 5: Choose Passcode Options

Select ‘Passcode Options’ to reveal different passcode types available.

Here, you can choose from custom alphanumeric code, custom numeric code, or the 4-digit numeric code.

Step 6: Select 4-Digit Numeric Code

Tap on ‘4-Digit Numeric Code’ to set up a passcode with four numbers.

This option simplifies the process of entering your passcode, which can be especially useful if you find yourself frequently unlocking your phone.

Step 7: Enter Your New Passcode

Enter the 4-digit number you wish to use as your new passcode.

You’ll need to enter the code a second time to confirm your choice and ensure there were no mistakes in the initial entry.


SimplicityA 4-digit passcode is easy to remember and quick to enter, making it convenient for those who access their phones frequently.
SpeedWith fewer digits to enter, unlocking your phone is faster, which can be crucial in emergency situations or when you’re in a hurry.
UsabilityFor individuals with memory issues or those who prefer not to complicate things, a 4-digit code offers a straightforward security option.


Less SecureWith only 10,000 possible combinations, a 4-digit code is more vulnerable to guessing attempts than longer passcodes.
Easy to ObserveThe shorter length makes it easier for someone to shoulder-surf and memorize your code.
Limited OptionsYou have fewer options for customization and complexity, which may not suit everyone’s security needs.

Additional Information

While setting up a 4-digit passcode on your iPhone with iOS 17 is a breeze, there are a few things to keep in mind. First and foremost, ensure that the passcode you choose isn’t easily guessable like “1234” or “0000”. Also, even though we’re focusing on a 4-digit code, iOS 17 allows you to set up a custom alphanumeric code or a custom numeric code. These options provide higher security levels, so consider your needs and choose accordingly.

Another tip is to regularly change your passcode to enhance security. And what if you forget your passcode? Well, iOS 17 doesn’t play around with security, so you’ll need to reset your iPhone, which can be a hassle. Therefore, pick a passcode that’s memorable to you but not obvious to others. Remember, your phone is a goldmine of personal data, and securing it with a passcode is your first line of defense against unauthorized access.


  1. Open the Settings app on your iPhone.
  2. Tap on ‘Face ID & Passcode’ or ‘Touch ID & Passcode’.
  3. Enter your current passcode.
  4. Select ‘Change Passcode’.
  5. Tap on ‘Passcode Options’.
  6. Choose ‘4-Digit Numeric Code’.
  7. Enter and confirm your new passcode.

Frequently Asked Questions

What if I forget my 4-digit passcode?

If you forget your passcode, you’ll need to erase your device, which deletes all of your data and settings, including the passcode. Make sure to back up your iPhone regularly to prevent data loss.

Is a 4-digit passcode less secure than other types of passcodes?

Yes, a 4-digit code is less secure due to the limited number of possible combinations. For enhanced security, consider using a longer numeric code or an alphanumeric code.

Can I use the same 4-digit passcode that I used in previous iOS versions?

Absolutely, you can use any 4-digit combination that you prefer, provided it wasn’t previously used as a passcode on the same device.

How often should I change my 4-digit passcode?

For optimal security, it’s recommended to change your passcode every few months or whenever you suspect that someone else may have learned it.

Can I still use Touch ID or Face ID with a 4-digit passcode?

Yes, you can use Touch ID or Face ID in conjunction with a 4-digit passcode for even faster access to your device.


With iOS 17, using a 4-digit passcode on your iPhone remains a popular choice for its simplicity and speed. While it may not offer the highest security level, for many users, it provides the right balance between convenience and protection.

Remember, the key to a good passcode is one that you won’t forget but isn’t easily guessable by others. Stay vigilant, regularly update your security settings, and enjoy the ease of use that comes with a 4-digit passcode on your iPhone.

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