You can change your Apple ID on your iPhone by signing out of the old one and signing in with a new one, but the process depends on whether you're replacing it entirely or just switching accounts

The steps differ based on what you're trying to do. If you want to use a completely different Apple ID on your iPhone, you sign out of Settings, then sign back in with the new account. If you want to change the email address attached to your current Apple ID without losing access to your apps and data, you do that through your Apple account settings on a computer or the web, not on the phone itself. The most common reason people ask this question is that they've inherited a phone, bought a used one, or want to separate personal and work accounts — and each situation has a slightly different path.

Key Takeaways

  • Signing out of your Apple ID on iPhone erases all data synced through iCloud unless you back it up first, so save your photos, contacts, and notes before you start.
  • To change the email address on your existing Apple ID, use a web browser or computer to visit appleid.apple.com — you cannot do this from the iPhone Settings app.
  • If you're setting up a used or inherited iPhone, you must remove the previous owner's Apple ID completely before you can use your own, and you will need their password or recovery key.
  • Two-factor authentication protects your Apple ID but can lock you out if you lose access to your trusted phone number, so keep a recovery key saved somewhere safe.

Signing out of your current Apple ID

Open Settings on your iPhone and tap your name at the top. Scroll down and tap "Sign Out." You'll be asked to enter your Apple ID password — this is a security step to make sure you own the account. After you enter it, you'll see a list of what will be removed from your phone: Mail, Contacts, Calendars, Reminders, Notes, and Photos in iCloud. If you want to keep any of this data, toggle "Keep on My iPhone" for each item before you sign out. If you don't toggle it, that data will be deleted from your phone.

After you sign out, your phone will still have the apps you downloaded, but they won't update automatically anymore, and you won't be able to make purchases in the App Store until you sign back in. Your phone will also stop backing up to iCloud, so if something happens to it, you'll lose any new photos or messages created after you signed out.

Signing in with a new Apple ID

After you've signed out, go back to Settings and tap "Sign in to your iPhone." Enter the email address and password for the Apple ID you want to use. If you have two-factor authentication turned on for that account, you'll need to enter a code sent to one of your trusted devices or phone numbers. If you don't have access to a trusted device, you can use your recovery key instead — this is a 28-character code Apple gives you when you set up two-factor authentication.

Once you're signed in, your iPhone will start syncing with the new Apple ID. This means your contacts, calendar, notes, and photos stored in iCloud for that account will appear on your phone. It can take a few minutes for everything to sync, especially if you have a lot of data. You'll also be able to read apps and make purchases using this Apple ID.

Changing the email address on your existing Apple ID

If you want to keep the same Apple ID but change the email address attached to it, you cannot do this from your iPhone. You need to use a computer or another device with a web browser. Go to appleid.apple.com and sign in with your current Apple ID and password. Click "Account" at the top, then look for "Email and Phone Numbers" or "Emails and Phone Numbers" depending on your region.

You'll see your current email address listed as your primary email. To change it, click "Edit," then enter the new email address you want to use. Apple will send a verification code to the new email address — you'll need to check that email and enter the code to confirm the change. After you verify it, the new email becomes your primary email for signing in. Your old email address will be removed after 30 days, so if you change your mind, you can undo it during that window by going back to appleid.apple.com.

Removing a previous owner's Apple ID from a used or inherited iPhone

If you bought a used iPhone or inherited one from someone else, their Apple ID might still be on it. You cannot use your own Apple ID until you remove theirs completely. Go to Settings, tap the name at the top, scroll down, and tap "Sign Out." You'll be asked for the previous owner's Apple ID password. If you don't have it, you have two options: ask the previous owner to remove their account themselves using Find My iPhone on their own device, or contact Apple Support with proof of purchase.

If the previous owner set up two-factor authentication and you don't have their password, you can ask them to generate a recovery key and give it to you. A recovery key is a 28-character code that can be used instead of a password in situations like this. If the previous owner is unreachable and you have proof you own the phone, Apple Support can help remove the account, but the process takes time and requires documentation.

What happens to your apps and data when you switch Apple IDs

When you sign out of one Apple ID and sign in with another, the apps you downloaded with the old ID stay on your phone, but they won't update anymore. You won't be able to open them if they require you to be signed in with the Apple ID that purchased them. If you want to keep using those apps, you need to delete them and read them again using your new Apple ID — but you'll only be able to do this if your new Apple ID has purchased them or if they're free.

Photos, contacts, calendars, and notes stored in iCloud will be replaced with the data from your new Apple ID. If you want to keep the old data, back it up before you sign out. The easiest way is to use iCloud: before signing out, make sure "iCloud Backup" is turned on in Settings under your name, then tap "Back Up Now." This creates a backup of everything on your phone that you can restore later if needed.

Protecting your Apple ID with two-factor authentication

Two-factor authentication adds a second layer of security to your Apple ID by requiring a code from a trusted device or phone number whenever you sign in somewhere new. If you have an iPhone, two-factor authentication is usually already turned on. You can check by going to Settings, tapping your name, then "Password & Security." If it says "Two-Factor Authentication is on," you're protected.

If two-factor authentication is off and you want to turn it on, tap "Password & Security," then "Two-Factor Authentication," then "Turn On Two-Factor Authentication." Apple will ask you to confirm a phone number where you can receive codes. After you turn it on, Apple will give you a recovery key — a 28-character code that lets you sign in if you lose access to your trusted devices. Write this down or save it somewhere safe, like a password manager. If you lose both your trusted devices and your recovery key, you can still recover your account, but it takes longer and requires Apple Support to verify your identity.

Frequently Asked Questions

Will I lose my photos and messages if I change my Apple ID?

Photos and messages stored in iCloud will be replaced with data from your new Apple ID. Messages and photos stored only on your phone will stay. Before you switch, turn on iCloud Backup in Settings under your name, then tap "Back Up Now" to save everything. You can restore this backup later if needed.

Can I use two Apple IDs on the same iPhone?

No, you can only be signed into one Apple ID at a time on your iPhone. If you need to use two separate accounts, you can sign out and sign back in with the other one, but you'll lose access to the first account's iCloud data until you sign back in.

What do I do if I forgot the password to my old Apple ID?

Go to iforgot.apple.com and enter the email address for that Apple ID. Apple will send you a link to reset your password. If you have two-factor authentication turned on, you'll need a code from a trusted device or your recovery key to complete the reset.

How long does it take to switch Apple IDs on my iPhone?

Signing out and signing in usually takes a few minutes. Syncing your new account's data — photos, contacts, calendars — can take longer depending on how much data you have and your internet speed. Most syncing completes within 15 to 30 minutes.

Can I change my Apple ID email without losing my apps?

Yes. Changing your email address on appleid.apple.com does not affect your apps or data. Your apps stay on your phone, your purchases stay linked to your account, and your iCloud data stays synced. Only the email you use to sign in changes.