What customizing your device settings actually does

Customizing your device settings means changing the default choices that came with your phone, computer, or tablet — choices that often favor convenience over privacy. When you customize, you are deciding which apps can see your location, which companies can track your activity, and how much of your data gets shared by default. You are not breaking anything or voiding a warranty. You are using controls that exist specifically for this purpose.

The goal is to move from "what the manufacturer chose for me" to "what I am comfortable with." That looks different for everyone. Someone who uses maps constantly might keep location on for that app but turn it off everywhere else. Someone who does not use social media does not need to customize those permissions at all. The point is that you decide, not that you turn everything off.

Key Takeaways

  • Most devices ship with sharing turned on by default — location, contacts, photos, microphone — because that is what manufacturers and app makers prefer, not because you need it that way.
  • You can change permissions one app at a time, one category at a time, or both, depending on your device and what you use it for.
  • The settings you need are usually under Privacy, Permissions, or Apps — the exact name varies by device, but the controls are always there.
  • Customizing takes 20 to 45 minutes the first time and then a few minutes when you install a new app, because you will want to check what it asks for.
  • Some apps will not work if you deny certain permissions, and that is the trade-off you are making — you decide whether the app is worth it.

Where to find privacy and permission settings on your device

On an iPhone, go to Settings, then scroll down and look for Privacy. You will see a list of things apps might ask for: Location Services, Contacts, Photos, Camera, Microphone, Health, and others. Tap any one of those and you see which apps have asked for that permission and what you said yes to. You can change any of those answers right there.

On an Android phone, the path depends on your manufacturer, but the most common route is Settings, then Apps or process Manager, then Permissions. Some Android phones also have a Privacy section directly in Settings. If you cannot find it, search for "permissions" in your Settings search bar — most Android devices have one at the top of Settings. Once you find Permissions, you see the same list: Location, Contacts, Camera, Microphone, and so on.

On a Windows computer, go to Settings, then Privacy & Security. You will see a long list of categories: General, App permissions, App diagnostics, and more. Each one controls what data Windows itself collects and what it lets apps access. On a Mac, go to System Settings, then Privacy & Security, and you see similar categories: Location Services, Contacts, Photos, Camera, Microphone, and others.

How to change permissions for individual apps

Start with the apps you use most. Open your device's privacy settings and find the permission you want to change — say, Location. Tap or click it. You see a list of every app that has ever asked for location access. Next to each app is your current answer: Always, While Using, Never, or Ask Next Time, depending on your device.

For each app, ask yourself: does this app actually need this permission to do what I use it for? Maps needs location. A note-taking app does not. A weather app might, depending on whether you want it to show your local forecast automatically or you want to type in a city. Change the answer to match your actual use. If you are not sure, set it to Never or Ask Next Time — you can always change it back if the app stops working the way you want.

Repeat this for each permission category: Contacts, Photos, Camera, Microphone, Health data, Calendar. You do not have to change everything at once. Many people start with Location and Microphone because those feel most intrusive, then move to others over time.

Permissions to pay attention to first

Location is the one most people want to restrict. Your location reveals where you live, work, shop, and worship. Many apps ask for it and do not actually need it. Maps needs it. A flashlight app does not. Set most apps to Never unless you have a specific reason.

Microphone is the second one people worry about. Only apps you actively use for calls, voice messages, or voice recording should have microphone access. Social media apps, games, and note-taking apps do not need it. Set those to Never.

Camera follows the same logic. Only video calling apps, photo apps, and apps where you intentionally record video need camera access. Everything else should be Never.

Contacts and Calendar matter if you care about who knows your relationships and your schedule. A messaging app might need Contacts. A calendar app obviously needs Calendar. But a game or a news app does not. Set those to Never.

Photos is worth thinking about. Some apps need to access your photos to let you share them. Others ask for it and then use it to scan your photos for data. If an app does not have a clear reason to see your photos, set it to Never or Ask Next Time.

What happens when you deny a permission

When you set an app's permission to Never, one of three things happens. The app works fine without it — this is the best case and happens more often than you might think. The app works but with reduced features — you might not get automatic location-based weather, but you can still see the forecast if you type in a city. Or the app stops working entirely because it genuinely needs that permission to function.

If an app stops working after you deny a permission, you have a choice: turn the permission back on, or stop using the app. That is the trade-off. Some apps are worth it. Some are not. A banking app that needs location to detect fraud might be worth it. A game that wants your location is probably not.

You can test this without committing. Set a permission to Never, use the app for a few minutes, and see what breaks. If nothing breaks or only minor features break, leave it off. If something important breaks, turn it back on. You can change these settings as many times as you want.

Settings that affect your whole device, not just apps

Beyond app permissions, your device has settings that control how much data it collects about you overall. On iPhone, go to Settings, then Privacy, and look for Analytics. You can turn off "Share iPhone Analytics" and "Share iCloud Analytics" — this stops Apple from collecting data about how you use your device and sending it to Apple servers.

On Android, the setting is usually called Diagnostics or Diagnostic Data. Go to Settings, then Google, then Manage Your Google Account, then Data & Privacy. Look for Web & App Activity and turn it off if you do not want Google recording what you search for and what apps you use.

On Windows, go to Settings, then Privacy & Security, then General. You can turn off several toggles: Tailored experiences, Relevant content, and Improve inking & typing. Further down, under Diagnostics & usage data, you can set it to Diagnostic data (the minimum) instead of Full diagnostic data.

On Mac, go to System Settings, then Privacy & Security, then Analytics. Uncheck "Share Mac Analytics" and "Improve Siri & Dictation."

How to handle permissions when you install a new app

When you first open a new app, it usually asks for permissions right away. You see a popup asking for Location, Contacts, Camera, or Microphone. You have a choice: Allow, Allow Once, or Don't Allow. Do not feel rushed. If you are not sure, tap Don't Allow. You can always change it later in your privacy settings if the app needs it to work.

A good habit is to deny everything the first time, use the app for a few minutes, and see what actually breaks. If the app needs a permission to do something you want, you will notice when ready. Then go back to your privacy settings and turn on just that permission. This way you are not giving away access you do not need.

Some apps will nag you about permissions every time you open them if you have denied them. This is annoying but harmless. The app is trying to convince you to change your mind. You do not have to. If the app is useful enough to keep despite the nagging, keep it. If the nagging bothers you more than the app helps you, delete it.

Frequently Asked Questions

If I turn off location for an app, will it still work?

Usually yes, but sometimes no. Maps needs location to show you where you are. A weather app can work without it if you type in a city instead. A game does not need it at all. The only way to know is to try. Deny the permission, use the app for a minute, and see what happens. You can turn it back on if something important breaks.

Can apps still track me if I deny permissions?

Apps can still collect some data about you — what you do inside the app, what you search for, what you buy. What they cannot do is access your location, contacts, photos, or microphone without permission. Denying permissions stops the most invasive tracking, but not all tracking. If you want to stop all tracking, you would have to stop using the app.

Do I need to customize settings on a new device right away?

Not when ready, but within the first few days is a good idea. When you first set up a device, you are often tired and clicking through quickly. Once you are settled in, spend 20 to 30 minutes going through your privacy settings and changing the defaults. You do not have to do it all at once — start with Location and Microphone, then do the rest later.

What if I customize settings and then forget what I changed?

Your device keeps a record. Go back to your privacy settings and look at each permission category. You will see exactly what you allowed and what you denied. If you want to start over, you can reset everything to defaults in most devices, though you usually have to do this in the main Settings app under Reset or Factory Reset.

Will customizing my settings make my device slower?

No. Denying permissions does not slow down your device. If anything, it might make some apps slightly faster because they are not collecting and sending data in the background. The only downside is that some apps might not work the way they did before, which is the whole point — you are choosing what matters to you.