To unsync your phone from another phone, you must remove the shared account or device association on each platform, then sign out of any app-level sync that is still active. The two main causes are a shared Apple ID or Google account, or a syncing app, and the fix is to remove the other device from the account, not just sign out on your own phone.
Unsync an iPhone from another iPhone or iPad
- Open Settings and tap [your name] at the top.
- Scroll to the device list and tap the other device.
- Tap Remove from Account.
- Go back to Settings > [your name] > Media & Purchases and tap Remove This Device.
- Open the Find My app, tap Devices, select the other device, and tap Remove or Remove This Device.
Apple’s device-removal instructions apply to iPhone, iPad, Mac, Apple Watch, AirPods, AirTag, and other Find My network accessories. The exact removal label varies, you may see Remove from Account, Remove This Device, Remove Item, or Remove, but the process is the same. Apple also documents Settings > [your name] > Media & Purchases > Remove This Device for an associated iPhone or iPad. Apple documents removing a device from Apple Account on iPhone/iPad, on the account page, and from Find My.
Unsync an Android phone from another Android device
- Open Settings and go to Accounts or Passwords & accounts (the label depends on your Android version). On Android, the exact label may appear as Users and accounts depending on Android version.
- Select the shared Google account.
- Tap Remove account.
- If this is the only Google Account on the device, you must enter the device’s pattern, PIN, or password to confirm removal.
Alternatively, open the Gmail app, tap your profile picture, choose Manage accounts on this device, select the account, and tap Remove account. This removes the account from the other phone and stops all Google syncing. Google documents removing the Google account from the device and signing out of device sessions from Manage your Google Account > Security & sign-in > Your devices > Manage all devices > Sign out. Google's Android account-removal page covers Android phones and tablets. A documented limit on Android is that removing the only Google Account requires the device lock credential.
Unsync phones linked through a Samsung account
On a Samsung Galaxy device, start in Settings > Accounts and backup. From there, select the Samsung account and follow the prompts to remove the linked account from the other device. This breaks the sync for Samsung-specific services such as contacts, calendar, and Samsung Cloud. Samsung's account-removal path starts in Settings > Accounts and backup, but the retrieved snippet does not show the remaining steps or any model-specific limits. Samsung's retrieved support page covers Galaxy phones and tablets.
Break the link in third-party apps and services
If the phones are linked through a specific app, such as a messaging app, email client, or cloud storage service, open that app on the other phone and sign out of your account. For services that offer a web dashboard, go to the account’s security or device management page and remove the trusted device. This covers syncing that happens outside the operating system’s account settings, including removing phone numbers from accounts and devices.
How to be sure the phones are completely unsynced
- The shared account has been removed from the other device.
- The other device has been removed from Find My or the account’s device list.
- App sessions on the other phone are signed out.
- Optionally, change the account password to force a global sign-out on all devices.
Check each of these points to confirm no data, contacts, photos, messages, or other synced content, can still appear on the other phone.
Frequently Asked Questions
Will unsyncing delete my data from the other phone?
No, unsyncing stops future data sharing but does not delete data that was already synced to the other device. To remove that data, you must delete it manually on the other phone after unsyncing.
Can I unsync without having the other phone in my hands?
Yes, you can remove the other device from your account’s device list through your account settings on the web.
How do I prevent the phones from re-syncing in the future?
Do not sign into the same Apple ID or Google account on both devices. For app-level sync, avoid logging into the same account on the other phone. Regularly review the device list in your account settings to catch any unwanted associations early.
