It's scary to think that someone might be spying on your iPhone, but you can take steps to prevent and detect this security threat
For many people, mobile phones are among their most personal possessions. The amount of private information they contain about you and your loved ones can be valuable for hackers or those who wish to stalk you electronically. For this reason, it’s critical to know how to tell if someone is spying on your iPhone. It happens more often than you might think.
“Imagine a vengeful ex or a disgruntled business partner keeping tabs on your conversations,” suggests Chris Olson, CEO of the Media Trust. It’s easy enough to do by installing stalkerware—a type of spyware—directly on a user’s device. “It can also be installed remotely by malicious cyber actors for doxxing or financial fraud,” he says. “Worst of all, it may be embedded in seemingly legitimate applications and installed by the user unintentionally.”
It’s definitely worth spending the time to learn which phone apps may be spying on you and how to remove spyware from an iPhone. While you’re at it, learn to determine if your computer has been hackedtoo, and brush up on online security, mobile security threats and data brokers.
What is stalkerware?
Stalkerware is a type of “sophisticated malware” that can gain access to and full control of a smartphone, according to Ameer Al-Nemrat, PhD, a reader in information security and computer forensics at the University of East London. “Stalkerware accesses the root of a smartphone, which means that it can view SMS messages, photos and videos, and listen to calls,” he explains. “[It also can view] end-to-end encrypted messages in apps such as WhatsApp, Signal and Telegram.”
Al-Nemrat points out that unlike spyware, which is mainly used by criminals hoping to steal credentials or crypto wallet keys from a device and authoritarian regimes monitoring chats, stalkerware almost always targets a particular individual. In fact, stalkerware is most commonly used for tracking spouses.
When someone is targeted by stalkerware, “the culprit usually has physical access to the other person’s device,” Al-Nemrat says. Knowing what stalkerware is and how to tell if someone is spying on your iPhone can save you a lot of headaches.
What does stalkerware do on your iPhone?
Stalkerware (and spyware) can monitor your device for data such as your location, which URLs you’ve visited and which apps you’ve recently run. It can even log keystrokes, giving away information about anything you’ve typed into your phone, including passwords. Because it’s easily available to the general public, stalkerware can compromise your privacy, says Andrew Whaley, senior technical director at Promon. Even worse, if installed by an abuser—say, to track their victim’s every step—it can have a serious outcome, such as physical harm.
There are some legitimate uses of stalkerware and spyware, however. ”Employers are probably within their rights to install monitoring software on company-owned property for the purposes of asset management and compliance, such as monitoring emails and other communications,” Whaley says.
Parents, too, may want to install it on their children’s devices. “Parents and children may feel safer if a child’s location is monitored,” he adds. “However, in both of these cases, it is important that monitoring software be discussed and understood by both parties. What most people would consider unacceptable is when hidden or overly intrusive monitoring is taking place.”
How does stalkerware get on your phone?
Tom Gaffney, security expert at F-Secure, says stalkerware can be sent to a phone via email, text or WhatsApp, and then needs to be installed, requiring physical access to your phone. Whether installed by employers, parents or suspicious spouses or exes, installation takes less than a minute.
Gaffney says stalkerware grew substantially during the pandemic, though it has mainly affected Android devices. “F-Secure labs saw a fivefold increase in attempted installations of stalkerware between January and July of 2021. The largest one in action is called Trackview.”
How can you tell if someone is spying on your iPhone?
rd.com, Getty Images
Al-Nemrat says it can be quite difficult for someone who’s not tech-savvy to identify spyware on their phone. He suggests going into your iPhone settings to General > VPN & Device Management to see if your device is being managed by someone else. If it is, then you’ll want to enable or disable the VPN connection or permission in the phone settings. You can do that via the info button next to the list of VPN connections.
1. Your phone gets really hot
If you find that your phone has been getting unusually hot lately, it may be a sign that it has been hacked. Spyware running in the background can make your phone work harder and subsequently put out more heat.
2. Your battery drains quickly
Look for sudden changes in the amount of time it takes for your phone’s battery to run out. A tracked phone will be continually sending data from the phone to the hacker, which makes your phone use more power and will deplete the battery much more quickly than normal.
3. Your monthly data usage is inexplicably higher
A tapped phone uses a lot of data because it is continuously sending information back to the hacker’s phone or computer.
4. Your phone reboots unexpectedly
The malware on your phone may be interfering with its normal functioning, essentially making it glitch out and restart randomly.
5. Your phone takes a long time to shut down
When you turn off your phone, it needs to close all the apps running in the background. If it takes longer than usual, it might be a sign that stalkerware has been installed on your phone.
6. Your phone has been jailbroken
Jailbreaking is the process of removing manufacturer restrictions in order to gain access to areas of the phone that would normally be protected. It is a practice commonly used by hackers to install spyware. If you suddenly see a new app called Cydia on your phone, it’s a sign that your phone may have been jailbroken.
7. You’re hearing background noise or electronic interference
Newer tracking software is completely quiet, but older versions may produce echoes, static or clicking sounds if someone is listening in on your calls.
8. Your cell phone is slower than normal
Every phone gets slower over time, but if you encounter this along with other problems on this list, be suspicious.
9. Spyware detection apps alert you to unusual activity
If you suspect you’re being stalked, consider downloading and installing a spyware detection app such as Avast, AVG, Certo AntiSpy or McAfee. These look for well-known installed packages and alert you when they find something. Be aware, however, that stalkerware changes so often that experts question their effectiveness.
What should you do if your phone is being tracked?
If you’ve agreed to let an employer or family member install stalkerware, then you don’t need to take further action. Spyware will be installed illegally, however, via a remote exploit—a type of software bug, Whaley explains, that takes advantage of your device over a network connection—or embedded in an app that you’ve installed.
“If you suspect you are being monitored, the first step would be to remove any recently installed apps,” Whaley advises. “Following this, rebooting the device will clear any transient infection. However, the only sure way to remove any suspected spyware would be to factory reset your device and start again,” Whaley adds. “Ideally, politically exposed individuals should do this daily or weekly.”
You should also turn off location sharing in your iPhone privacy settings. However, Whaley cautions that while this will help protect against stalkerware, it might not prevent other forms of spyware from tracking you.
It’s important, too, to always update your iPhone’s operating system, as it closes off known exploits.
According to Whaley, “iOS has just introduced something called ‘lockdown mode,’ which puts the phone in a limited functionality mode to try and prevent some of the activities of spyware. It remains to be seen how effective that will be.”
“However, it is extremely important to remember that if your phone has stalkerware, your activities will be seen by other people,” Al-Nemrat warns. For that reason, be sure to use another device—one that’s not on your network—to take action, whether that’s Googling the next steps or calling a professional to remove the stalkerware.
How can you protect yourself from phone spyware?
The best way to avoid being a victim of spyware is to keep an eye on your phone at all times to prevent someone you don’t trust from getting ahold of it. Olson suggests protecting your phone with a passcode, passphrase, Face ID or Touch ID. If you use a passphrase, Olson recommends using long alphanumeric phrases, as they’re the most secure form of authentication on iOS.
“Be careful which apps you download from the app store,” he warns, as many provide access to your data to third parties, who may be tracking your activities without your knowledge. Finally, he suggests asking developers to scan their applications for vulnerable code to protect you better.
Al-Nemrat recommends changing your device passcodes every so often and adding two-factor authentication (2FA) to your device as an additional login credential outside of a username/password.
“There are plenty of antivirus software [programs that] can be used to detect and protect against stalkerware, although none of them are 100% guaranteed,” Al-Nemrat says.
Now that you’ve learned how to tell if someone is spying on your iPhone, check out the signs someone stole your identity.
Additional reporting by Alina Bradford.
- Chris Olson, CEO ofThe Media Trust
- Ameer Al-Nemrat, PhD, reader in information security and computer forensics at the University of East London
- Andrew Whaley, senior technical director ofPromon
- Tom Gaffney, security expert atF-Secure
Increased data usage
If you suspect your phone is being monitored, check the Storage section in your settings. Here, you should be able to see how much data is being consumed by what. If you notice your device is using more data than usual, that could be an indicator of spyware.
The following signs may indicate that someone is using your phone's camera to watch you: Suspicious background apps. Camera misbehaving. Odd files and inexplicably low storage space.How can you tell if your phone is being monitored by someone else? ›
- Unusual sounds during calls. ...
- Decreased battery capacity. ...
- Phone shows activity when not in use. ...
- Phone takes a long time to shut down. ...
- Battery temperature feels warm. ...
- Receiving unusual texts. ...
- Increased data usage. ...
There is a way someone can monitor your mobile phone without ever touching the actual device. Spyware (a portmanteau of 'spying software) and stalkerware can be installed on a phone without the owner's knowledge, allowing an attacker to steal information, track activity, and more.How do I stop my iPhone from being monitored? ›
- Go to Settings > Privacy & Security > Tracking. The list shows the apps that requested permission to track you. ...
- To stop all apps from asking permission to track you, turn off Allow Apps to Request to Track (at the top of the screen).
Sign in to the Apple ID website (https://appleid.apple.com) and review all the personal and security information in your account to see if there is any information that someone else has added. If you have two-factor authentication turned on, review trusted devices for any devices that you don't recognize.How can I stop my phone from being monitored? ›
The best way to block phone tracking is to use a VPN. But you can also change a few settings on your phone or switch to a different browser to stop tracking. You can hide your location via settings, block ad tracking with a dedicated private browser, and encrypt all of your internet traffic with a VPN.Can someone watch me through my iPhone? ›
Yes, a partner, parent, or even employer can gain remote, real-time access to your iPhone using spying software. Spyware can track your GPS location, record your keypad inputs such as credit card numbers and passwords, and monitor your calls, texts, app usage, emails, voice, and other personal data.How do I clean my iPhone from spyware? ›
- Update your iPhone. Apple is constantly improving operating system security on all its devices. ...
- Remove unknown or suspicious apps. ...
- Clear browsing data and history. ...
- Download a mobile security app. ...
- Perform a factory reset.
Code to check if phone is tapped: *#21#
- Electrical fixture wall plates are slightly out of place. ...
- Check your vinyl baseboard – where the floor and wall meet. ...
- Look for discoloration on ceilings and walls. ...
- A familiar item or sign in your home or office simply looks off. ...
- You notice white debris close to a wall.
Can You Block Someone From Spying on My Cellphone? Yes, one of the most effective ways to achieve this objective is to use strong antivirus software. Antivirus apps can help stop malicious apps, code, and spyware from wreaking havoc on your phone and stealing your data.What app can I use to see if someone is spying on my iPhone? ›
The easiest way to discover if someone has tried to install spyware on your iPhone or Android smartphone is to scan your phone with security software like Certo AntiSpy (for iOS devices) or Certo Mobile Security (for Android devices).Do I have spyware on my iPhone? ›
What is spyware on an iPhone?
|Type||Spyware, stalkerware, malware|
|Affected devices||iPhone, Mac|
When you dial *#21#, it will display the various sorts of diversion status which is happening with the number. This will display the information and you will come to know if your calls or messages are tapped.Is there an app to see if someone is snooping on your phone? ›
Certo makes applications that check if your device has spyware apps on it: Certo AntiSpy for iOS devices runs on your PC or Mac and investigates your device's backup, rather than the phone itself. It checks for tracking services, hidden apps, and anything with access to your location, microphone, or camera.How can I see what devices are linked to me? ›
- Go to your Google Account.
- On the left navigation panel, select Security .
- On the Your devices panel, select Manage all devices.
- You'll see devices where you're currently signed in to your Google Account or have been in the last few weeks.
Unfortunately, the answer is “yes.” There are a number of spy apps that can sit hidden your phone and record everything you do. The snoop can watch every detail of your life and you'll never know. We're going to take a look at what spying apps are on the market and how they work so you know how to stay safe.Can someone hack my iPhone and see what Im doing? ›
If something seems abnormal with your iPhone or iPad, then there's a chance you may have been hacked. That's right. It sounds scary and, quite frankly, it is. If someone has hacked your phone, then they might have access to all of your personal details, your photos, videos, they could even track your physical location.Can someone hack my iPhone and watch what I'm doing? ›
Once hackers have physical access to your iPhone, they can install spyware (also known as "stalkerware") on the device. This software lets them see everything on your phone, including your geolocation and personal data.
If your iPhone backs everything up to your iCloud account, then someone can spy on your activity by accessing your iCloud account from any web browser. They would need your Apple ID username and password in order to do this, so if you know that a third party has that information, there are a few steps you should take.Can I check if my phone has spyware? ›
Run a malware scan: There are mobile antivirus solutions available that can detect and remove spyware. This is the easiest solution available, but it may not be effective in every case. Cybersecurity vendors, including Malwarebytes, Avast, and Bitdefender, all offer mobile spyware-scanning tools.What does ## 002 do to your phone? ›
##002# - If your voice call or data call, or SMS call has been forwarded, dialling this USSD code will erase them. *#21# - By dialling this USSD code, you would get to know if your calls have been diverted somewhere else or not.What is *# 62 code used for? ›
With the *#62# settings interrogation code, you can see if calls or texts are being forwarded to another number whenever you're unreachable. If the "Voice Call Forwarding," "Data Call Forwarding," and "SMS Call Forwarding" all say they're disabled, good. If numbers are listed, they could be put there by someone else.How would I know if my phone has been tapped? ›
If you hear pulsating static, high-pitched humming, or other strange background noises when on voice calls, it may be a sign that your phone is being tapped. If you hear unusual sounds like beeping, clicking, or static when you're not on a call, that's another sign that your phone is tapped.What are the 4 types of surveillance? ›
- Electronic Monitoring. Electronic monitoring, or wiretapping, refers to the surveillance of email, fax, Internet and telephone communications. ...
- Fixed Surveillance. ...
- Stationary Technical Surveillance. ...
- Three-Person Surveillance. ...
- Undercover Operations.
Use RF detectors:
Get yourself a radio frequency detector and take it around the home to locate any recording devices. That's because the sensor makes a beeping sound whenever you point it at anything emitting radio frequencies.
Use the code *#21# to see if hackers track your phone with malicious intent. You can also use this code to verify if your calls, messages, or other data are being diverted. It also shows your diverted information's status and the number to which the information is transferred.Can you Unhack your phone? ›
Fix a hacked Android phone with a factory reset
A factory reset is a simple procedure that completely cleans your phone's internal storage. A factory reset deletes not only your photos, videos, messages, and other personal data, but also wipes out malware that lets hackers in.
*#06# Displays IMEI number(s).
Code to check if phone is tapped: *#21#How do I block my phone from being tracked? ›
- Go to Settings > Privacy and tap Location Services.
- You can toggle off Location Services for all apps or scroll down and turn off location services only for specific apps.
- Go to Settings > Location, and toggle the location button to Off.
Yes, a partner, parent, or even employer can gain remote, real-time access to your iPhone using spying software. Spyware can track your GPS location, record your keypad inputs such as credit card numbers and passwords, and monitor your calls, texts, app usage, emails, voice, and other personal data.Can you scan iPhone for spyware? ›
Certo AntiSpy is an app for your computer that you can use to scan your iPhone and detect if someone has installed spyware.Can someone watch you through your iPhone? ›
If your iPhone backs everything up to your iCloud account, then someone can spy on your activity by accessing your iCloud account from any web browser. They would need your Apple ID username and password in order to do this, so if you know that a third party has that information, there are a few steps you should take.