There is no single setting that says “you are being tracked.” Phone stalkerware is built to hide, so the honest answer is a mix of warning signs on the phone, a look at who has had access to it, and a plan for what to do before you touch anything. The most important point comes first: if you think an abusive partner or someone else dangerous is watching your phone, read the safety section below before you delete a single app.
What stalkerware is, and how it gets on a phone
The National Network to End Domestic Violence (NNEDV) Safety Net Project describes stalkerware as software that lets another person secretly monitor your phone activity: photos and videos, websites you visit, messages, call history and location. Depending on the product, it can also turn on the camera or microphone, take screenshots, see activity inside apps such as Snapchat and WhatsApp, and intercept, forward or record calls.
CISA uses the broader word spyware. Its guidance on tracking technologies and spyware cites the definition Congress adopted in December 2022: software that enables unauthorized users to remotely access information stored on a device or transiting the internet. CISA lists stalkerware alongside keyloggers, rootkits and trojan horses.
How does it get there? NNEDV says almost all phone stalkerware requires physical access to the device to install. That detail shapes everything else. If your phone has never been out of your hands, never been unlocked by anyone else, and has a passcode nobody knows, the odds change. If a partner, ex or relative has had the phone and your passcode, they change the other way. NNEDV also notes that on iPhones, most stalkerware cannot be installed unless the device is jailbroken.
Signs the phone may be compromised
The Federal Trade Commission lists several things that can point to stalkerware: the battery draining faster than it should, unusual data use, the phone overheating, random restarts, and an abuser who seems to know your location or your private conversations. The FTC also says to watch for unsupervised access to your phone, meaning someone who had it for a while.
NNEDV gives a similar list: a battery that drains rapidly, the device turning off and on, and spikes in data usage. Then it adds the line that matters most, which is that the most common sign will be the other person’s suspicious behavior. The Coalition Against Stalkerware says the same thing in its information for survivors: some versions show no obvious side effects at all, so the main sign is what the abuser knows and does.
Read that carefully. A fast-draining battery is also what an aging battery does. A phone that restarts may need an update. None of the technical signs prove anything alone. What raises concern is a technical sign plus a person who keeps turning up where you are, or quoting messages you only sent privately. NNEDV is blunt about the limits: a trained professional may have to check the device to know for sure.
Read this before you remove anything
Do not start with deletion. The Coalition Against Stalkerware warns that removing stalkerware or other monitoring, or making significant changes to the device, may be detected by the abuser and could increase the abuse and harassment. NNEDV says the same in different words: some people escalate their abusive behavior when stalkerware is removed.
The Coalition also points out that deleting the software destroys evidence. If you may want a protective order or a police report, what is on the phone can matter. The sources point to the same order of operations:
- Get help from an advocate first and make a safety plan before you change the phone.
- Use a different device for anything related to getting help. NNEDV suggests a friend’s phone or a library, school or work computer for private calls and online activity.
- Document what you found before removing anything.
- If you are in immediate danger, contact local authorities.
The FTC page lists the National Domestic Violence Hotline: 1-800-799-7233, chat at thehotline.org, or text START to 88788. Use a phone you trust when you call.
Checks you can run on an iPhone or Android phone
If it is safe to look, these are the checks the sources actually describe.
| Check | Where | What the source says |
|---|---|---|
| Review who you share with | iPhone: Safety Check | Apple says Safety Check has Emergency Reset and Manage Sharing and Access. It needs iOS 16 or later and an Apple Account with two-factor authentication |
| Find unknown trackers traveling with you | Android: Settings, Safety and emergency, Unknown tracker alerts (Android 12 and up) | Google says alerts work on Android 6 and up, cover compatible trackers including AirTags, and offer Play sound and Find nearby |
| Check for a jailbroken or rooted phone | Any phone, as an early step | The FTC says to check whether the phone is rooted or jailbroken, and NNEDV notes that most iPhone stalkerware cannot be installed unless the phone is jailbroken |
| Look at app permissions | Phone settings | CISA lists managing app permissions among its protective steps |
Apple’s guide has its own caution, quoted as written: before making changes or deleting information, consider potential impacts to your safety and privacy. Apple also states the limits of Safety Check. It cannot review non-Apple accounts or social media sharing, and it is limited by Screen Time restrictions or a mobile device management profile. So a clean Safety Check is not a clean bill of health.
The Android path changes by version. On Android 11 and lower, Google’s page puts the setting under Settings, then Google, then Personal and device safety, then Unknown tracker alerts. Turning the alerts off clears previous alerts, which is worth knowing before you flip the switch while gathering evidence.
One more point from NNEDV: an abuser with physical access to your phone or your cloud accounts may not need stalkerware at all. A shared Apple Account, a Google account with a known password, a family location-sharing setting, or friends and relatives passing information along can leak as much as a hidden app. If the problem is not on the phone, a factory reset will not fix it.
Cleaning up once you have a plan
The FTC’s order is: contact an advocate, check whether the phone is rooted or jailbroken, document evidence, then either get a new phone or factory reset the current one. NNEDV says that in most cases a full factory reset can remove stalkerware, with a catch: reinstalling apps or files from a backup can re-load it. The FTC agrees on that point and says to download apps fresh instead of restoring. NNEDV also suggests creating a new iCloud or Google account, and changing passwords from a device you know is clean.
After the phone is clean, CISA’s list is a good baseline. Download software only from its original source, reboot weekly, use Lockdown Mode on Apple devices, run antivirus, use multifactor authentication and strong passwords, turn on full device encryption, and keep up with updates. NNEDV adds a passcode lock, turning off Android’s “unknown sources” install option, and not rooting or jailbreaking the phone.
Tracking is not always about the phone. If you suspect a car tracker, our guide to checking a car for a GPS tracker covers that side. For a room, the counter-surveillance guide explains how to sweep for bugs and cameras. And if the person watching you is breaking the law, the overview of US surveillance laws explains where that line sits.
Our take
Treat the phone as one clue, not the whole case. The sources agree that the strongest signal is the other person’s behavior, that battery and data symptoms prove nothing alone, and that removal can provoke the person watching. If you have a real reason to worry, call the hotline from a different device before you reset anything. If you are only curious, run Safety Check or the tracker alerts, tighten your passcode and account passwords, and keep your software updated.
Common questions about phone tracking
Can someone track my phone without touching it?
NNEDV says almost all phone stalkerware requires physical access to the device to install. But the same document notes that someone with access to your cloud accounts may not need stalkerware at all, so account access is a separate risk.
Can an iPhone have stalkerware?
NNEDV says that on iPhones, most stalkerware cannot be installed unless the device is jailbroken. Shared accounts and location-sharing settings can still expose you, which is what Apple’s Safety Check is meant to review.
Will a factory reset remove stalkerware?
NNEDV says that in most cases a full factory reset can remove it, but restoring apps or files from a backup can re-load it. Think through the safety risks first, because removal may be noticed.
Should I delete the app as soon as I find it?
Not before a safety plan. The Coalition Against Stalkerware warns that removal may be detected by the abuser and could increase abuse, and deleting the app also destroys evidence. Talk to an advocate first.
Who can I call?
The National Domestic Violence Hotline is listed on the FTC page at 1-800-799-7233, with chat at thehotline.org and text START to 88788. In immediate danger, contact local authorities.
Behind this review
TrueSpyTech does not operate a test lab, and no article here rests on a unit we plugged in ourselves. Research pulls the spec sheets and the relevant law, the pattern in owner reports fills in what a spec sheet will not admit, and an editor signs off before anything goes live. Ratings are locked before affiliate links go in, never after. The full protocol is on our How we review page.
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