Transcription
Think about the last time you mentioned something you wanted to buy near your phone. A restaurant, new running shoes, a trip you were considering. Then the next day an ad for that exact thing shows up. People joke that their phone is listening. Tech companies swear it isn't. Here's what's actually happening, and it's more invasive than listening would be.
The apps on your iPhone have access to your location, microphone, camera, contacts, and browsing behavior. They share that with advertising networks that build profiles detailed enough to predict what you want before you've said a word. The good news? Apple built some of the strongest permission controls of any smartphone platform. The problem? They're buried. Today, I'll show you exactly where and how to shut it down.
The single most powerful privacy change you can make on your iPhone right now is something Apple introduced a few years ago called App Tracking Transparency. And despite being one of the most significant privacy features Apple has ever shipped, most people either don't know it exists or never configured it properly after setting up their phone. Here's what it does.
Every app on your iPhone has what's called an advertising identifier. A unique code that advertisers use to track you across different apps and websites. App A sees that you browsed running shoes. App B sees that you looked at travel destinations. The advertising network connects both data points because they're both tied to the same identifier, and suddenly advertisers know far more about you than either app individually could have told them.
App Tracking Transparency lets you block apps from accessing that identifier entirely. When an app wants to track you across other apps and websites, iOS forces it to ask your permission first with a clear prompt explaining what it's requesting. You can say no. Here's how to make sure it's configured properly.
Go to Settings. Tap Privacy & Security. Tap Tracking. You'll see a toggle at the top that says "Allow Apps to Request to Track." Turn this off. When this is off, apps cannot even ask you for tracking permission. They're blocked automatically. Every app on your phone loses the ability to track you across other apps and websites the moment you flip the switch.
Now, some people worry this will break apps they use. It won't break the core functionality of any app. What it breaks is the advertising tracking that happens invisibly in the background. Instagram still works. Google Maps still works. Every app you use still works. They just can't follow you around the internet building a profile on you anymore.
Location data is the most valuable and most abused permission on your iPhone. And the reason it's so valuable is that your location over time tells advertisers and data brokers an enormous amount about who you are, where you work, where you worship, what medical facilities you visit, what political events you attend, where your children go to school. Most people think they've already dealt with this. They remember turning off location for a few apps when they first set up their phone, but the default settings have been working against them ever since.
Go to Settings. Tap Privacy & Security. Tap Location Services. You're going to see a list of every app that has requested location access. And next to each one, you'll see what level of access it currently has. The options are Never, Ask Next Time, While Using the App, and Always. Always is the dangerous one. Any app set to Always is tracking your location continuously, even when the app is closed, even when your screen is off, even when you haven't opened that app in weeks.
Go through this list and change every app set to Always to either While Using the App or Never. Be thorough. Social media apps do not need your location ever. Shopping apps do not need your location ever. Games do not need your location ever. News apps do not need your location ever. The only apps that have a legitimate reason for location access while using them are navigation apps, ride-sharing apps, food delivery apps, and weather apps. Everything else should be set to Never.
Then scroll to the bottom and tap System Services. This is a hidden layer of location access that most people never see. Turn off iPhone Analytics, Significant Locations (which is Apple tracking everywhere you go and storing it on your device), Routing & Traffic (unless you use Apple Maps heavily), and Location-Based Apple Ads. That last one is Apple itself using your location to serve you targeted advertising. Turn it off.
Now let's talk about the one that makes people most uncomfortable. The microphone. I want to be clear about something before we get into this. The major tech companies—Apple, Google, Meta—have consistently denied that their apps listen to your conversations for advertising purposes. And there's no definitive public evidence that they do in the way people imagine, with someone listening to your actual words. But here's what is documented and confirmed: Some apps have been caught activating the microphone during moments when there was no obvious reason to do so. Some apps access the microphone during what appears to be routine background activity. And the data these apps collect through legitimate microphone access, like voice searches, voice messages, and audio features, is processed and, in some cases, used to inform advertising profiles.
The point isn't to resolve the debate. The point is that most of the apps on your phone have microphone access they were given years ago and have never needed you to think about since. It's time to think about it.
Go to Settings, tap Privacy & Security, tap Microphone. You'll see every app that has microphone access. Go through this list and ask yourself one question for each app: Does this app have a legitimate reason to record audio? Voice messaging apps? Yes. Video calling apps? Yes. Your Notes app, if you use voice memos? Yes. Social media apps? Shopping apps? Games? News apps? Turn them all off. They can ask again if they ever genuinely need it.
Then go back and do the same thing for Camera. Apply the same logic. If an app has no obvious reason to point a lens at you or your surroundings, revoke the access. It costs you nothing and takes about 2 minutes.
Here's one of the most useful privacy features Apple has ever built, and almost nobody knows it exists. It's called the App Privacy Report. And what it does is generate a detailed log of every time an app on your phone has accessed your location, your microphone, your camera, your contacts, or your media library. And every network domain that app has been contacting in the background. This is the receipt. This is the record of what your apps have actually been doing while you've been living your life.
Here's how to turn it on. Go to Settings, tap Privacy & Security. Scroll down to App Privacy Report and tap it. Tap Turn On App Privacy Report. It won't show you anything immediately. It needs to run for a few days to collect data, but after a week, go back and look at what it's recorded.
You'll see a list of apps and exactly how many times each one accessed sensitive permissions during that period. You'll see the network domains they contacted—advertising networks, data brokers, analytics companies—all listed by name. For a lot of people, this report is the moment the abstract idea of being tracked becomes concrete and personal. Seeing your fitness app contact 12 advertising network domains in a single day while you used it for 3 minutes is different from knowing in general that apps share data. It makes it real.
Use this report to audit your permissions on an ongoing basis. Any app that's accessing your location or microphone more frequently than makes sense for how you use it deserves a second look.
We've covered location, microphone, and camera. But there are three more permission categories that are just as sensitive and just as commonly abused. The first is Contacts. Your contact list contains the names, phone numbers, email addresses, and in some cases, physical addresses of every person you know. An app with access to your contacts has access to information about people who never downloaded that app and never agreed to share their information with it. This is one of the ways social networks build shadow profiles. They harvest your contacts, identify which ones are already on the platform, and use the relationship data to map your social network whether you intended to share it or not.
Go to Settings, Privacy & Security, Contacts. Turn off access for every app that has no legitimate reason to see your contact list. Messaging apps and phone apps genuinely need it. Almost everything else does not.
The second is Photos. Go to Settings, Privacy & Security, Photos. Every app with photo access can see every image in your camera roll, including photos that contain embedded location data from where they were taken, photos of documents, screenshots of sensitive information, and anything else you've ever photographed. Change every app from All Photos to Selected Photos or None, unless there's a specific reason it needs full library access.
The third is Health. If you use Apple Health, the data in that app includes your heart rate, your sleep patterns, your menstrual cycle (if you track it), your medications, your mental health data, and dozens of other deeply personal data points. Go to Settings, Privacy & Security, Health, and audit which apps have access to what. Revoke access for anything you don't actively use for health tracking purposes.
Here's the part most iPhone privacy videos skip, because it's not about third-party apps. It's about Apple itself. Apple has a strong privacy reputation, and in many areas, they deserve it. But Apple also collects data about how you use your device, what you search for, what you buy, and where you go. And they use some of that data for their own advertising platform. Here's how to limit it.
Go to Settings, then Privacy & Security, then scroll down to Apple Advertising and tap it. Turn off Personalized Ads. This stops Apple from using your data to serve you targeted ads inside the App Store, Apple News, and Apple's other first-party apps.
Then go back to Privacy & Security and tap Analytics & Improvements. Turn off Share iPhone Analytics, Share iCloud Analytics, and Improve Siri & Dictation. These settings send usage data from your device to Apple continuously in the background. Turning them off doesn't affect how your phone works. It just stops the data transmission.
Here is everything I want you to do after this video. Go to Settings, Privacy & Security, Tracking, and turn off "Allow Apps to Request to Track." That's the master switch for cross-app advertising tracking, and it's the highest-impact change in this entire video. Go through Location Services and change every app set to Always to While Using or Never. Turn off Significant Locations and Location-Based Apple Ads in System Services. Go through Microphone and Camera permissions and revoke access for every app that has no clear reason to record audio or video. Turn on the App Privacy Report and check back in a week. Let it show you what your apps have actually been doing. Go through Contacts and Photos and tighten those permissions down. Turn off Personalized Ads and Share iPhone Analytics in Apple's own settings.
Every single one of these changes is reversible. If you turn something off and an app stops working the way you need it to, you can go back and re-enable it in 30 seconds. But in my experience, most people make all of these changes and don't notice a single difference in how they use their phone. Except that the apps on it are no longer building a detailed profile on them every moment of the day.
Your iPhone is one of the most powerful privacy tools available if you know how to configure it. Most people just never got the instruction manual. Now you have it. Subscribe if this was useful. Every week, I cover exactly this kind of thing. And if your iPhone battery drains faster, watch this video to learn practical ways to improve how long it lasts. Thank you for watching. See you in the next one.