The App Permissions Worth Checking on Your Phone

1. Start with the phone’s permission lists

On an iPhone, open Settings, then Privacy & Security, and review the categories listed there. You can also open Settings, then Apps, choose an app and inspect its permissions. On Android, look for Permission manager under Security & privacy or Privacy, or open Settings, Apps, choose an app and select Permissions. Manufacturers move these menus around, so searching Settings for “permission” is often the quickest route.

Start with apps you rarely use, then check shopping, social, weather, navigation and messaging apps. A permission can be legitimate without being necessary for your use. Denying it may disable one feature rather than the whole app. If something stops working, reopen that feature and reconsider the request instead of restoring every permission. Android’s Privacy dashboard can show recent permission use; iPhone’s App Privacy Report, when enabled, collects activity you can review. Neither is a complete audit of a company’s data practices.

• Check what is allowed now, not just what you remember approving during setup.
• Remove unused apps, but remember that uninstalling does not necessarily close your account.
• Review permissions again after adding a feature, restoring a phone or making a major software update.

2. Give location access the smallest useful scope

Location has two separate dimensions: when an app can access it and how precise the location is. For many local forecasts or nearby-store searches, approximate location is enough. Turn-by-turn directions, pickup coordination and some safety features may need precise location. Background access deserves extra scrutiny because it can allow location use when you are not actively using the app. It may support a real feature, such as route recording or a location-based reminder, but it should have a clear purpose.

On iPhone, check Settings, Privacy & Security, Location Services, then choose an app. Depending on the app, options can include Never, Ask Next Time Or When I Share, While Using the App and Always, alongside Precise Location. Android commonly offers options such as allowing access while using the app, asking every time or denying access; background access is available only where supported. On recent Android versions, also check the precise-location switch. For an occasional task, an iPhone Allow Once prompt or Android temporary-access option can avoid a lasting grant. Temporary access does not necessarily end the instant you switch screens.

• Test approximate location before assuming a feature requires precise access.
• A manually entered city or ZIP code may eliminate the need for location permission.
• Denying location does not hide every location clue: services may still infer an area from your IP address.

3. Separate microphone and camera access

Microphone and camera permissions are separate, even when an app commonly uses both. A video-call app may need both for a video conversation, while an audio-only call needs the microphone. A barcode scanner normally needs the camera, not the microphone. Review each permission independently rather than treating a familiar app as entitled to every sensor. On Android versions that offer “Only this time,” temporary camera or microphone access is useful for an occasional task; do not assume iPhone offers the same one-time controls for these categories.

Current phones display indicators when the camera or microphone is in use. On iPhone, an orange indicator signals microphone use, while green indicates camera use or camera and microphone use together. Android also displays camera and microphone privacy indicators, with details varying by device. An indicator during a call is expected; one you cannot explain is a reason to investigate. Open Control Center on iPhone or the relevant indicator or privacy controls on Android to look for the responsible app.

• Disable camera access for apps you use only to read, browse or shop.
• Keep microphone access off unless you use recording, calling or another audio-input feature.
• If an indicator surprises you, stop the active task, check recent access and revoke permission if the reason remains unclear.

4. Treat contacts as other people’s information, too

Your address book can contain names, phone numbers, email addresses, birthdays and notes about people who never chose to use the requesting app. Social and messaging services may request contacts to identify friends, invite people or match accounts. Those features can be convenient, but the permission may expose much more than the single person you intend to reach. Before approving, see whether you can search by username, type a number or send an invitation yourself.

On iPhones running iOS 18 or later, supported contact-permission controls let you provide limited access to selected contacts rather than the entire address book. Review the app under Settings, Privacy & Security, Contacts and check which entries are shared. Android choices depend on the system and the app; do not assume every phone offers an equivalent limited-contacts setting. If only an all-or-nothing choice appears, denying access and entering a recipient manually may be the better fit. Also check the service’s own settings for contact syncing or uploaded contacts. Turning off phone permission and deleting a previously uploaded address book are separate actions.

5. Share selected photos instead of the whole library

A photo library can reveal your home, children, receipts, medical paperwork and travel patterns. Uploading one profile picture rarely calls for ongoing access to everything. On iPhone, review Photos permissions under Privacy & Security and use limited or selected-photo access where available. Labels can vary by software version. Some apps also offer an add-only option, which lets them save images without granting general access to read your library.

On recent Android versions, apps can use the system photo picker to let you choose specific images or videos without granting broad library access. Android 14 and later also support selected-photo access for apps requesting relevant media permissions, though the experience depends on how the app is built. These are related protections, not identical mechanisms. When a picker appears, select only what the task needs. If an editor cannot find another picture later, add that picture to the allowed selection rather than immediately switching to full access. A selected item can still be uploaded, copied or analyzed by the receiving app; limited access restricts what you expose, not what happens afterward.

6. Understand what revoking access cannot undo

Revoking permission generally stops future access through that permission. It does not reach into an app developer’s servers and retrieve previously uploaded contacts, recordings, photographs or location records. An app may also retain copies it already made in its own storage. Deleting the app removes its access from that device, but it does not necessarily delete a cloud account, cancel a subscription or erase information held by the service.

For existing data, look inside the app and its website for controls covering uploaded contacts, location history, stored media, backups and account deletion. Read the privacy notice for retention rules and deletion-request procedures. Depending on the service and applicable law, some records may remain for legal, security or transaction-related reasons. Deletion from backups may follow a different schedule. Be cautious about interpreting a confirmation as a promise that every copy disappeared immediately. If your goal is to stop collection and reduce what is already stored, you usually need both a phone-setting change and a service-level action.

• Turn off unnecessary access on the phone first.
• Disable related syncing or uploads inside the service.
• Use its deletion controls or privacy-request process, and save any confirmation.

7. Keep permissions tied to the task

The most sustainable approach is to approve access when you reach a feature that genuinely needs it, not automatically during a string of welcome screens. Read the system prompt and the app’s explanation together. If the connection is unclear, deny access and continue. A refusal is reversible: you can usually return to Settings later, although the app may not show another prompt after repeated denials.

Check again when your habits change. A travel app that needed location during a trip may no longer need it, and a school or event app may not need contacts once the activity ends. Some Android phones automatically reset permissions for unused apps; check whether that protection is enabled, but do not rely on it instead of reviewing active apps. The goal is not to make every setting as restrictive as possible. It is to give each app enough access for a useful job, for no longer and no more broadly than you intend.