When setting up a new Android phone, it is easy to tap "Allow" or "Continue" without thinking much about what you are agreeing to. Over time, those defaults can quietly collect diagnostic data, personalize ads, or keep background services running that serve little practical purpose for most users.

Many of these features are optional. Turning them off can improve your privacy, reduce unnecessary data sharing, and in some cases trim a small amount of background activity.

This guide covers ten Android settings worth reviewing and explains what each one does before you decide whether to keep it on.

What this covers:

• Privacy settings worth reviewing

• Features that share data with Google or your device manufacturer

• Advertising and personalization settings

• Which settings are generally safe to disable

• Features you should leave enabled

Before You Start

Android is not the same on every phone. Samsung, Google Pixel, Xiaomi, OnePlus, Motorola, and other manufacturers often place settings in different menus or use different names for the same feature. The exact locations below apply to stock Android 12 and later; your device may vary.

1. Usage and Diagnostics

This setting allows your phone to send diagnostic data to Google and, depending on your device, to your manufacturer. The information can include app crashes, device performance stats, battery usage, system logs, and feature usage patterns.

Google states this data is used to improve Android. Most users will not notice any difference after disabling it.

Where to find it: Settings → Privacy → Usage and diagnostics

2. Personalize Using Shared Data

Some Android devices offer personalization features based on your activity, producing app recommendations, suggested content, and smart feature suggestions. If you would rather your phone rely less on your usage history, this option can be disabled without any impact on core functionality.

The exact name and location varies by manufacturer, but it is typically found under Settings → Privacy or Settings → Google → Ads and personalization.

3. Delete Your Advertising ID

Android assigns each device an advertising identifier that apps can use to serve more relevant ads. Deleting or resetting this ID does not remove ads, but it makes them less personalized. On modern versions of Android (12 and later), you can delete the ID entirely rather than just resetting it.

Where to find it: Settings → Privacy → Ads, then choose Delete Advertising ID or Reset Advertising ID depending on your Android version.

4. Ad Personalization

Related to the Advertising ID, this setting controls whether apps use your activity to build an advertising profile. Turning it off limits targeted advertising across supported apps. You will still see ads in free apps; they will simply be less tailored to your browsing and usage history.

5. Nearby Device Scanning

Some phones continuously scan for nearby Bluetooth devices even when Bluetooth itself appears to be turned off. This supports features like Quick Share and smart device discovery, but if you rarely use those features, disabling continuous scanning reduces background activity with no noticeable effect on daily use.

Where to find it: Settings → Connected devices or Settings → Location → Location services (varies by manufacturer).

6. Wi-Fi Scanning

Even when Wi-Fi is disabled, Android can continue scanning for nearby networks to improve location accuracy. This helps location-dependent apps pinpoint your position more precisely, but it also means your phone is performing background radio scans regularly.

If you do not rely heavily on location services, turning this off is safe.

Where to find it: Settings → Location → Location services → Wi-Fi scanning

7. Bluetooth Scanning

Similar to Wi-Fi scanning, Bluetooth scanning lets Android detect nearby devices for improved positioning even when Bluetooth is off. Unless you frequently use smart home devices or features that depend on precise indoor positioning, most users will not notice a difference after disabling it.

Where to find it: Settings → Location → Location services → Bluetooth scanning

8. App Usage Access

This permission allows an app to monitor which other apps you open and how often. Digital wellbeing tools and some accessibility features legitimately need it, but many apps request it without a clear reason.

It is worth reviewing this list periodically and revoking access from any app that does not have an obvious need for it.

Where to find it: Settings → Privacy → Permission manager → Usage access (or Settings → Apps → Special app access → Usage access)

9. Auto-Sync for Unused Accounts

Multiple Google accounts connected to a single phone will each sync contacts, calendars, photos, Gmail, and Drive in the background. If you have accounts you no longer actively use, turning off auto-sync for them reduces unnecessary background data activity.

Where to find it: Settings → Accounts → [account name] → Account sync

10. Marketing Notifications and Manufacturer Recommendations

Many device manufacturers include their own recommendation services that send promotional notifications, app suggestions, and shopping offers. These are separate from the notifications you have opted into from apps you actually use.

If you would rather keep notifications focused on what matters, these are usually worth disabling. The location varies by manufacturer: look under Settings → Notifications, Settings → Privacy, or within your manufacturer's dedicated settings app.

Settings You Should Think Twice Before Disabling

Not every privacy-related option is safe to turn off. These four are worth keeping enabled for most users.

Find My Device is essential if your phone is ever lost or stolen. Without it, remotely locating, locking, or erasing the device is not possible.

Google Play Protect scans installed apps for potentially harmful software. Disabling it removes a meaningful layer of protection, especially for apps installed outside the Play Store.

Automatic security updates keep your phone protected against newly discovered vulnerabilities. Turning these off leaves you exposed to threats that have already been patched for everyone else.

Emergency Location Services can share your location with emergency responders when you call or message local emergency services. There is rarely a good reason to disable this.

Frequently Asked Questions

Will turning these settings off make my phone faster?

Not dramatically. Most of these settings affect privacy and data sharing rather than performance. You may see a small improvement in battery life from reducing background scanning and sync activity, but it will not be dramatic.

Will I stop seeing ads?

No. Ads will still appear in free apps. Disabling advertising features mainly reduces how personalized those ads are, not how frequently they appear.

Can I re-enable these settings later?

Yes. Every setting covered in this guide can be turned back on at any time with no lasting effects.

Will disabling diagnostics affect Android updates?

No. Your phone will continue receiving software and security updates regardless of your Usage and Diagnostics setting.

Key Takeaways

• Many Android privacy settings are optional and can be disabled without affecting daily phone use.

• Usage and Diagnostics can be turned off without any impact on updates or core functionality.

• Deleting your Advertising ID reduces personalized advertising without removing ads entirely.

• Wi-Fi and Bluetooth scanning can continue running in the background even when those radios appear to be off.

• Review special app permissions like Usage Access periodically and revoke access from apps that do not need it.

• Leave Find My Device, Play Protect, automatic security updates, and Emergency Location Services enabled.

Conclusion

Android offers more privacy controls than most users realize, but they are often buried several menus deep in the Settings app. Spending a few minutes reviewing features like Usage and Diagnostics, advertising settings, and background scanning can meaningfully reduce what your phone shares without changing how it works day to day.

The goal is not to disable every feature by default. It is to understand what each setting actually does and make an informed choice about what is worth keeping on.

If there is a setting you have always wondered about or one that surprised you when you dug into it, leave a comment below.

Which of these settings did you not realize was enabled on your phone?