How to Enable or Disable Two-Factor Authentication Security on iPhone Devices

Two-factor authentication (2FA) provides an extra layer of security for your Apple ID and iPhone device. It requires both your password and a trusted device or phone number to verify your identity when signing in to your Apple account.

Enabling two-factor authentication is highly recommended to protect your sensitive data and prevent unauthorized access. However, you may need to disable it in certain situations. This guide covers everything you need to know about managing two-factor authentication on your iPhone.

When to Enable Two-Factor Authentication

Here are some key reasons why you should enable two-factor authentication on your iPhone:

  • Enhanced account security: 2FA makes it much harder for hackers to access your account even if they obtain your password. This prevents identity theft and protects sensitive data.
  • Required for certain features: Some Apple services like Apple Card, Apple Pay, iCloud Keychain, etc. require 2FA to be enabled.
  • Peace of mind: Having 2FA gives you confidence that your personal data is more secure from phishing attacks and other threats.

In short, anyone using an iPhone should turn on two-factor authentication for stronger protection of their digital life.

How to Enable Two-Factor Authentication

Enabling 2FA on your iPhone is simple:

  1. Open the Settings app
  2. Tap on your name
  3. Select “Password & Security”
  4. Tap “Turn on Two-Factor Authentication”
  5. Tap “Continue” and follow the on-screen prompts

You will need to enter a trusted phone number to receive verification codes when signing in. This completes the 2FA activation process.

When You May Need to Disable Two-Factor Authentication

There are a few instances where you may need to (temporarily) disable two-factor authentication on your iPhone:

  • If you lose access to your trusted devices and phone numbers
  • When troubleshooting account access issues
  • If asked by Apple support to disable it
  • When selling or giving away your iPhone

Important: You only get a two-week period after enrolling where you can disable 2FA. After that, it becomes permanent on your Apple ID.

Within the two-week window, follow the steps below to turn it off.

How to Disable Two-Factor Authentication

To disable 2FA on your iPhone:

  1. Open the confirmation email you received from Apple when enabling 2FA
  2. Locate the link to return to your previous security settings
  3. Click the link which will disable 2FA and revert your account security

You can repeat the process in this article to turn two-factor authentication back on at any time. Just note that after two weeks, the option to disable it goes away.

Tips for Managing Two-Factor Authentication

Here are some additional tips when using two-factor authentication on your iPhone:

  • Maintain multiple trusted phone numbers as backups for verification codes
  • Add trusted devices like your iPad which can display verification codes
  • Use iOS text messages as the verification method for speed
  • Consider setting up account recovery in case you lose account access
  • Monitor the devices and locations you use to sign in to detect unauthorized access attempts
  • Keep your iOS version updated for the latest security fixes


Two-factor authentication takes just minutes to enable but provides tremendous long-term security benefits. It should be activated by all iPhone users concerned about account safety. Remember that you only have two weeks to disable 2FA if the need arises. Follow this guide to easily manage this important security feature on your Apple device.