Today we carry it on our mobile phones almost all of our digital lifePersonal photos, bank details, work emails, two-factor authentication, social media... Someone accessing that phone isn't just a nuisance; it can pose a real privacy and even financial security problem. The good news is that Android includes a lot of security and privacy settings which, when properly configured, greatly increase the level of protection without complicating our lives too much.
In this guide you will find, step by step and without beating around the bush, how Activate essential security settings on AndroidWhat each one does, in what cases it makes sense to use them, and what limitations they have. We're going to mix new functions like... Advanced Protection for Android 16 With classic settings you absolutely must check out: app permissions, screen lock, backup, anti-theft, Google privacy, and much more. The idea is to give you the most secure phone possible, without going crazy or sacrificing convenience.
Advanced Protection on Android: the “super secure mode”
In the most recent versions (Android 16 and some 15 versions), Google has grouped several defenses into a kind of enhanced security mode called Advanced ProtectionThis mode combines layers of security for apps, web browsing, mobile network and even anti-theft lock, and prevents them from being easily disabled by mistake or maliciously.
When you activate this mode, Android applies a strategy of “defense in depth”Several barriers work together to minimize risk. For example, it strengthens Google Play Protect, blocks apps from unknown sources, disables insecure connections, and hardens settings for Chrome, Messages, and Google Phone without you having to go through them one by one.
Another important advantage is that the Activation is fairly guidedYou don't need to be a cybersecurity expert to take advantage of it. The system itself applies the most secure settings and prevents you from accidentally disabling key functions while Advanced Protection is enabled.
If you also register your Google account in the company's Advanced Protection Program, you add an extra layer against phishing, dangerous downloads, and unauthorized access to your dataThis is especially relevant for high-risk profiles (journalists, activists, public officials, companies with sensitive data, etc.).
How to turn Advanced Device Protection on and off
First of all, keep in mind that to activate Advanced Protection on your device you will need to have a configured screen lock method (PIN, pattern, password, or biometrics). Additionally, on some models, the system will ask you restart the mobile to implement the most profound security changes.
Activate Device Protection
The steps may vary slightly depending on the brand and version of Android, but generally the path to access the panel is the same. Advanced Protection It is usually one of these two:
- From System Settings:
- Opens Settings on your mobile.
- Sign in Security and privacy.
- In the “Other settings” section or similar, tap on Advanced Protection.
- From Google Settings:
- Opens Settings and enter the section Google.
- Press on All the services (if it appears).
- In the section “Personal and device security”, it touches Advanced Protection.
Once you're on that screen, you'll see the option Device protectionActivate it and confirm by tapping on ActivateIt is possible that the system:
- I ask you Enter your PIN, pattern, or password to confirm.
- I'll show you a notification indicating that a reboot is required now or later for some protections to come into effect.
If you choose "restart later", remember that you can do so whenever you want from the Advanced Protection page itself, by clicking on Restart nowUntil that restart is complete, Not all advanced features will be fully functional..
Register your Google account for protection
In addition to protecting your phone itself, you can link your Google account to the ecosystem of Advanced Account Protectionwhich adds strict access controls to your data:
- Go back to the screen of Advanced Protection.
- Tap on Account protection.
- Follow the instructions: you will usually be asked Enable strong two-factor authentication, possibly with security keys or access keys, and review which apps have permission to access your information.
Keep in mind that even if you later disable the screen lock, the program will still retain the functionality. Advanced Protection can remain activeHowever, the system will warn you that some defenses will not work at 100% without a robust block.
Disable Device Protection
If at any point you find Advanced Protection too restrictive (for example, if you need to install apps from outside Google Play for professional reasons), you can disable itAgain, the route is usually:
- Settings > Security and Privacy > Advanced Protection,
- Settings > Google > All services > Advanced protection.
Inside the panel:
- Locate the switch Device protection and disable it.
- Confirm your identity with biometrics (fingerprint/face) or PINIf you were also enrolled in Account Protection, a button may appear earlier. Continue that you must accept.
Just like when you activate it, when you deactivate Advanced Protection, the system may ask you to... reboot the phone either immediately or allow you to postpone it. The goal is to revert deep security settings that require a clean boot to return to their original state.
Important: If your Google account is enrolled in the protection program, Some account defenses will remain operational Even if you remove device protection, you'll need to manage the account protection cancellation separately from the Google dashboard.
What protections does Advanced Protection include on Android?
Activating Advanced Protection doesn't just flip a generic switch: it activates and blocks several specific security functions They're spread throughout the system. It's helpful to know what each one does to understand how it's helping you.
Application Security
One of the pillars is Google Play ProtectPlay Protect is the integrated system that analyzes the apps installed on your device and those you download from the Play Store. It features Advanced Protection. cannot be disabledreducing the risk of malware, banking trojans, or spyware.
Everything related to apps from unknown sourcesThe system blocks the APK installation Downloads from outside Google Play and updates for apps originally installed through that channel are also affected. This blocking significantly reduces the attack surface, as many infections originate from careless side installations.
On devices with compatible hardware, it is automatically activated Memory Tagging Extension (MTE)This is an ARM technology that helps detect and stop memory errors in apps (typical in more advanced exploits). This makes life more difficult for attackers trying to exploit low-level vulnerabilities.
Device security, messages and calls
In terms of physical security, Advanced Protection relies on features such as anti-theft lockThe “theft detection lock” and offline lock, which use sensors and usage patterns to react if it appears that someone is snatching your phone or trying to tamper with it offline.
In Google Messages, this mode forces the advanced spam and scam detectionThis feature analyzes text patterns and suspicious senders to warn you about fraudulent SMS messages or phishing links. Additionally, when a message comes from an unknown contact and contains a link, the system can display an explicit risk alert.
The Google Phone app reinforces the spam caller ID and the automatic call filterIn supported regions, an AI assistant can answer for you, ask who's calling, and reject calls it identifies as spam or scam attempts, greatly reducing the risk of falling for voice scams.
Network and web browsing
On the mobile network level, on devices that support it, Advanced Protection prevents your phone from connecting to 2G networksThese older networks are less secure and are used in some attacks with IMSI catchers (antenna simulators) to intercept or track communications.
During web browsing, Android activates the Safe browsing with real-time protection, which more frequently consults databases of malicious sites to block newly appeared phishing websites or dangerous downloads.
Chrome, for its part, forces the use of HTTPS whenever possibleThis prevents your data from traveling unencrypted over public or unreliable Wi-Fi networks. Additionally, Chrome's JavaScript optimizer is disabled to reduce attack vectors via malicious code, at the cost of a slight impact on the performance of some pages.
Integration with Google and third-party apps
One interesting advantage is that Advanced Protection works like centralized control point This applies to many Google apps: Chrome, Messages, Phone, network services, etc. The idea is that you don't have to activate the "more secure" option one by one; the system will configure it all at once.
Google also allows that third party apps integrate with this mode. This way, developers of banking, cryptocurrency, or enterprise applications could check the device's protection level and adjust their own measures (for example, requiring more authentication if protection is not active).
Other security and privacy settings you should review
Beyond Advanced Protection, Android has a good handful of essential security settings which should be fine-tuned. Many come fairly well configured from the factory, but it doesn't hurt to check them carefully.
Security and privacy dashboard: status and alerts
On many modern mobile phones you will see a combined section called "Security and privacy" In Settings. From there you can see at a glance:
- Un state summary of the device (“Everything is correct” or “The device is at risk”).
- Alerts and warnings along with suggestions for fixing them (for example, suggesting that you activate screen lock or update the system).
- Recommendations to strengthen certain aspects: permissions, backups, encryption, etc.
If a message like “Your device is at risk” appears at the top, open it and review the recommendations. They usually point to clear security gaps: weak screen lock, Play Protect disabled, outdated Android versions, etc.
Screen lock, biometrics, and lock mode
Screen lock is your first line of defense: make sure you use a sufficiently long PIN or password (Ideally between 8 and 12 alphanumeric characters that are easy for you to remember but difficult for others to guess). Simple patterns like "L" or "Z" are much less recommended.
Once the code is set, you can add fingerprint or facial recognition for added convenience. However, keep in mind that legally (at least in countries like the US) a memorized code is usually better protected against forced unlocking than biometrics; in Spain and other European countries, the legal framework is also changing, but it's worth bearing in mind.
Some devices incorporate a “Lockdown mode” or “Lockdown mode” When activated, this feature temporarily disables face unlock, fingerprint unlock, and Smart Lock, leaving only your PIN/password as an option. It's useful if you're worried someone might force you to unlock your phone in front of you.
Theft, anti-theft, and remote location
In case of theft or loss, the most important thing is to have a plan in place that allows you to locate, block or erase the deviceAndroid offers several pieces for this.
On one side is “Find my device”You can activate it from Settings > Security and privacy > Device finders > Find my device. Once turned on, you'll be able to see your phone on a map, make it ring, lock the screen, or erase all its content from the website android.com/find.
Many modern terminals also include the Theft protectionwith options such as:
- Lock due to theft detectionIf the phone detects a typical snatching or theft movement, it automatically locks the screen.
- Locking an offline device: It is activated if the phone goes a long time without connecting or if someone tries to tamper with it offline right after a theft.
You can also set a emergency contact or information visible on the lock screen so that, if someone finds your phone, they can return it to you or contact a family member without accessing the rest of the data.
The “thief mode” and shutdown or connectivity lock
Some manufacturers (especially Xiaomi with HyperOS/MIUI and certain Samsung skins) include settings like “thief mode” or similar that prevent you from turning off the phone, disabling Wi-Fi or turning off mobile data without first entering the PIN or password.
The goal is very simple: prevent the thief from disconnecting the mobile phone disconnect from the network or disable location services immediately after it's stolen. If your brand supports it, it's usually found in the settings. lock screen or in advanced security options. It's worth checking and enabling.
In addition, many systems allow you to activate one remote erase configurationIf you consider your device lost forever, you can render it unusable by remotely erasing all its content. On Android, this is usually managed through "Find My Device" or the manufacturer's security settings.
Application permissions and privacy manager
Almost all apps try to request more permissions than they need: location, contacts, camera, microphone… That's why Android includes a centralized permission managerYou'll find it in Settings > Security and privacy > Privacy controls > Permission manager (or a very similar path depending on the layer).
From there you can review, one by one, permissions such as Location, Camera, Microphone, Contacts, Photos and Videosetc. Each permission shows you how many apps have access and allows you to change it. In many cases, you can fine-tune the settings:
- Never allow.
- Allow only while the app is in use.
- Ask every time.
- Choosing access to precise or approximate location.
It is highly recommended to limit the location (only when using the app, and only accurate for maps or navigation apps) and Review access to photos, contacts, and microphone. of all non-essential apps. If something stops working, you can always grant permission again.
Google advertising, tracking, and account settings
Much of the tracking on Android mobiles is done through the advertising identifier (AAID)If you want to make it harder for commercial profiling to be done using your data, go to Settings > Security and privacy > Privacy controls > Ads and choose the option to delete or reset advertising ID.
In addition, from your section Google account In Settings you can launch Google's "Privacy Checkup". This checks elements such as:
- Location history.
- Web and app activity.
- YouTube history.
- Ad personalization and more.
From that assistant you can delete old historyDisable saving for the future and limit customization as much as possible if you are particularly concerned about privacy.
Backups: what to save and how
Backups are critical: if your phone is stolen or broken, being able to restore everything in minutes makes all the difference. On Android, backups are basically divided into photos/videos y remaining device data (apps, settings, SMS, call history, etc.).
Photos and videos are usually stored in Google Photoswhich does not encrypt the content end-to-end. That is, Google could access it under certain circumstances. However, some app and system data is encrypted with your unlock codealthough it is not always transparent exactly what is being encrypted.
From Settings > System > Backup You can choose whether to enable automatic backup, which account to use, and in some cases, limit it to Wi-Fi. If you prefer something more controlled, you can always connect your mobile phone to a computer via USB and manually copy important folders (photos, documents, etc.) or use tools like Quick Share in Windows.
Profiles, private space, and guest mode
If you often lend your phone or want to separate work and personal life, Android offers several options. One of the most interesting in recent versions is... “Private space”It works like a "phone within a phone", with its own apps and, if you want, even another Google account.
By creating that space (Settings > Security and privacy > Private space), everything you install there remains isolated from the rest of the systemIt's ideal for sensitive apps (banking, crypto, encrypted messaging) or for those you know collect a lot of data but need to use. You can lock that space with a PIN different from your phone's.
Another option is the multiple user profiles (Settings > System > Multiple users). Each user has their own environment, apps, and data; perfect for shared phones, work use, or for leaving a guest profile when someone needs the phone for a while.
Additional measures: antivirus, corporate anti-theft, and insecure networks
In business environments or for users who want an additional layer, there are solutions for endpoint security for Android that combine antivirus, anti-theft and usage policies.
This type of platforms allow, for example, to permanently protect against malware They use an antivirus engine that analyzes files and apps in real time, supported by local signatures and cloud queries. They also typically offer analysis of apps from unknown sources before allowing their installation and exclusion lists for specific packages.
In terms of anti-theft features, many add functions such as Periodic GPS tracking towards a central server and the famous "snap the thief" option: take a photo with the front camera after several failed unlock attempts and send it by email to a pre-configured address.
They even allow you to configure a "private mode" which, when active, Temporarily disables location tracking or photo taking For privacy reasons, something useful in regulated environments or companies with very strict policies.
Updates, Wi-Fi and other advanced layers
Finally, don't forget the foundations: an outdated device or one connected to insecure networks is a much easier target, no matter how good everything else is.
Check periodically, from Settings > Software update, that your mobile phone has the latest version of Android and security patchesMany known exploits are fixed precisely with these updates.
On Android 15 or higher you can disable the Wi-Fi network connection with WEP encryptionWEP is an old standard that has been broken for years. Go to Settings > Network & Internet > Internet > Network Preferences and disable any "allow WEP networks" options if they appear.
It's also a good idea to adjust the lock screen notifications To prevent sensitive content from being displayed to anyone, you can choose to hide sensitive content or even all notifications on the lock screen from Settings > Notifications > Lock screen notifications.
For those seeking extreme privacy control, there is the option to install Custom ROMs focused on security (Graphene OS(CalyxOS and similar systems). However, they require advanced knowledge, involve their own risks, and can break official Google functions or applications that depend on its services.
Configuring these options fully might take some time the first time, but once you've made the initial effort, your phone will be ready. a level of protection far superior to the factory settingKeeping your device updated, using a good screen lock, activating anti-theft protection, and occasionally checking permissions, backups, and security and privacy status makes a huge difference against theft, malware, scams, and data leaks, whether you use Android personally or it's a key component of your work or business.
