How do I change app permissions? An expert guide

As a long-time technology advisor and data privacy advocate, I want to provide the most comprehensive, authoritative guidance on managing app permissions. These controls are vital for protecting your personal information, but can be complex to navigate. This expert guide will delve into all facets of app permission management on Android, iOS and beyond to help you gain true understanding and control.

Let‘s start with…why should you care about app permissions in the first place?

Why App Permissions Matter

Permissions give apps access to incredibly sensitive user information stored on your device – your contacts, messages, photos, location history, even your camera and microphone. As cybersecurity experts, we have seen firsthand the consequences when people blindly approve invasive app permissions without realizing the risks.

According to a recent consumer survey, over 80% of smartphone users have privacy and security concerns related to app access, with 45% having directly experienced malicious misuse of their data by apps. Negligent permission management can lead to your personal information being exploited, sold or leaked.

Fortunately, mobile operating systems provide tools for managing permissions once you know how and where to access the controls. But it does require consciously monitoring and modifying access instead of just approving everything on autopilot. This guide will cover all the steps and best practices gleaned from my decade-plus career as a data protection advisor.

My goal is to make you an expert on managing app permissions…

How App Permissions Work

To modify permissions, it helps to understand what‘s happening behind the scenes when an app requests access to your data.

Android and iOS both use permission protocols that prompt users to approve access to sensitive APIs and device sensors when an app is first installed. Approving grants ongoing access unless permissions are later changed.

Once installed, apps are sandboxed meaning they can only access your data or hardware via specifically allowed permissions. This prevents unfettered access across your entire device.

Android defines distinct protection levels for each permission type – Normal, Dangerous or Signature/System. More sensitive permissions require explicit user approval.

iOS permissions are not app-specific but device-wide – once approved, any app can access that data or sensor. Android allows more granular control by app.

Now let‘s dive into reviewing current permissions and making changes…

Reviewing and Modifying App Permissions

Here are detailed steps for both major mobile platforms:

Android Permissions

To change permissions by app:

1. Open Settings > Apps & notifications
2. Tap App info or App management
3. Select the app and tap Permissions
4. Toggle each permission on/off

Or go to Settings > Security & privacy > Permission manager to see which apps have access to each permission type.

Android permissions are categorized as:

iOS Permissions

To change permissions:

1. Go to Settings > Privacy
2. Select permission type like Calendar, Photos
3. Toggle specific app access on/off

You can also see recently used permissions under Settings > Privacy & Security > App Privacy Report.

Common iOS permission categories include:

• Calendar
• Camera
• Contacts
• Health
• Home
• Location
• Media Library
• Microphone
• Motion & Fitness
• Photos
• Reminders
• Speech Recognition

Assessing Permission Needs

Not all permission access is inherently bad – apps need certain permissions to function properly. But many requests are unnecessary and high risk.

Evaluate whether each permission fits the primary use case of the app:

• Camera access makes sense for a social media app, but likely not a flashlight app.

• Location access is reasonable for a mapping app, but probably unnecessary for a game.

• Microphone access could be needed for a video call app, but not a recipe app.

I recommend initially denying unnecessary-seeming permissions, then testing if the app still works properly. If it starts crashing or loses major features, you may want to re-enable access. Find the right balance for each app based on your comfort level.

Permission Management Tips

Here are my top recommendations for staying in control of app permissions from over a decade of privacy management experience:

• Don‘t just blindly accept all permissions on installation. Actively monitor access.

• Disable unused app permissions to limit unneeded access to your data.

• Be more restrictive with new, unfamiliar apps; grant basic functionality only.

• Every few months, review used permissions under Privacy settings on iOS.

• Note any app instability after restricting permissions, and tweak access.

• When deleting an app, reset its permissions first via App Info settings.

• Don‘t override security prompts unless absolutely necessary. They exist to protect you.

• Keep systems updated to use the latest permission security features.

• Report suspicious or highly abnormal permission requests when discovered.

• Back up data before doing full factory reset if troubleshooting permission issues.

Adopting these practices helps avoid "permission creep", where apps gain more and more access without you realizing it. Monitor closely and revoke any unnecessary permissions to better protect your privacy.

Closing Advice

App permissions represent a crucial gatekeeper between your personal data and third-party apps. While no system is completely bulletproof, consciously managing permissions goes a long way in safeguarding your privacy without losing app functionality. I hope this insider guide provides the knowledge you need to feel truly empowered over your data.

The next time an app requests sensitive permissions, pause for a moment and consider whether it truly needs access, or if you can restrict it while still using the app. It takes some ongoing attention, but staying vigilant is how we make the app ecosystem better for all users.

Let me know if you have any other questions arise as you monitor permissions on your devices! I‘m always happy to share my technical expertise with concerned app users.