This guide does not explain how to secretly monitor another person’s iPhone. Getting into someone else’s device or account without permission is unauthorized access, and in many places it is a crime. What follows is the practical side for the more common situation: you suspect someone has access to your iPhone, your Apple Account, or your location, and you want to find out and shut it down.
The word “spying” can cover four different things on an iPhone, and each has a different fix. Start by working out which one fits what you are seeing.
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Four different things “spying” can mean on an iPhone
| What it looks like | What it involves | Where to check first |
|---|---|---|
| Shared location or content | Someone you once gave access to still sees your location, photos, or other shared data | Safety Check, under Manage Sharing & Access |
| Apple Account access | An unfamiliar device or sign-in is connected to your Apple Account | Safety Check, and the devices list tied to your Apple Account |
| Compromised device | Unusual behavior that may come from targeted spyware, which Apple sends threat notifications about | Apple threat notifications, verified directly through account.apple.com |
| Physical Bluetooth tracker | An unknown AirTag, Find My accessory, or compatible tracker is moving with you | Tracker alerts and the Tracking Notifications setting |
Each section below covers one of these. Work through the one that matches your situation, then the baseline protections that apply to all four.
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1Clear out junk files and repair common Windows errors2Fix the driver behind crashes, sound loss and screen glitches3Repair Windows errors before they cause bigger problemsReview and cut off sharing with Safety Check
Safety Check is Apple’s built-in tool for reviewing who and what has access to your data. Apple documents it for iPhones running iOS 16 or later.
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- Open Settings > Privacy & Security > Safety Check.
- Choose Manage Sharing & Access to review people, apps, and devices one at a time and remove only what you do not recognize.
- If you need to stop sharing quickly across the board, choose Emergency Reset. This ends broad sharing at once rather than item by item.
- Review the devices connected to your Apple Account and remove any you do not recognize.
- Use the same flow to update your Apple Account and device credentials, including your passwords.
Apple advises thinking through the safety consequences before you make changes. Ending sharing can be noticed by the other person, which matters if you are in an unsafe relationship or household. If that describes your situation, plan the order of changes carefully, and consider reaching out to a domestic-violence advocate or local support service before you act.
What Safety Check does not cover
- Non-Apple account sessions and passwords, such as email, social media, or banking logins. Check those in each service’s own security settings.
- Social-media sharing and posts that other people can see.
- Devices signed into a different Apple Account. Safety Check reviews your account, not every relationship a device has.
Safety Check is therefore a sharing and account review, not a full audit of every account or device in your life.
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If you received an Apple threat notification
Apple sends threat notifications when it believes a specific person may be targeted by mercenary spyware. Apple’s guidance is that such a notification is a serious signal and should be checked, not ignored.
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- Apple recommends expert help for anyone who receives one. Apple names Access Now’s Digital Security Helpline as a resource.
- Apply the baseline protections below before you start changing settings, so you are not working on a device that is still open to the same access.
A threat notification means Apple has identified a risk to you. It does not diagnose exactly what is on your device, and you should not assume a clean check means nothing is wrong.
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Respond to an unknown Bluetooth tracker alert
Compatible iPhones can alert you when an AirTag, a set of AirPods, a Find My network accessory, or another compatible Bluetooth location-tracking device that is separated from its owner appears to be moving with you over time. This is a physical-tracking issue, and an alert is not a general spyware detector.
- Confirm that Location Services is on under Settings > Privacy & Security > Location Services.
- Confirm that Bluetooth is on under Settings > Bluetooth.
- Confirm that Tracking Notifications is enabled under Settings > Notifications > Tracking Notifications.
- Follow the instructions in the alert to play a sound on the accessory or find it, and remove it from your belongings if you locate it.
Alert requirements vary by iOS version and by accessory, so an alert may not appear on every phone. If you feel at risk, go to a safe public place and contact law enforcement. Apple says AirTags and Find My network accessories should not be used to track people, and that non-consensual tracking is a crime in many countries and regions.
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Baseline protections for every iPhone
Apple describes these basics as the foundation for any account, and as the minimum for people who have reason to believe they are individually targeted:
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- Use strong, unique passwords for your Apple Account and other accounts.
- Turn on two-factor authentication.
- For people with good reason to believe they are individually targeted, consider Lockdown Mode, which restricts some features to reduce the attack surface.
Watch for phishing that imitates Apple alerts
Scammers often send fake alerts that look like Apple security warnings. Apple’s own threat-notification guidance gives a clear test:
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“Apple threat notifications never ask the user to click any links, open files, install apps or profiles, or provide an Apple Account password or verification code by email or on the phone.”
Apple Support, “About Apple threat notifications and protecting against mercenary spyware,” published August 13, 2026. If a message asks for any of those things, treat it as a scam and sign in directly to account.apple.com instead.
What this guide cannot establish
Apple’s pages describe the built-in checks and response steps available to you. They do not prove that every form of remote compromise is impossible, and an article cannot diagnose a particular device. If the steps above do not explain what you are seeing, or your device behaves strangely after you have reviewed sharing and credentials, get help from a qualified security professional or a digital-security helpline before you decide what to do next.
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