How to Fix a Hacked Android Phone

Consider resetting your device. As long as you back up or sync your device's data to your Google account, one of the ways to get rid of a hacker is to perform a factory reset of your phone.

• Keep in mind that resetting your device will delete all of its data. However, as long as your photos, videos, contacts, and personal data are synced to your Google account, it'll resync back to your device once you sign back in.
• After resetting your phone, change your Google account password if the hacker has access to your account. You can do so in the Settings app—just go to Google > Manage your Google Account > Security > "'Signing in to Google"' > Password to do so from your device.^[1]

Reboot into safe mode. If you want to try removing hackers and malware without erasing your device and starting over, start by entering safe mode:

• Press and hold the power button on your device.
• When the power options appear, tap and hold Power Off.
• When prompted, tap Reboot to safe mode.^[2]
• If this doesn't work, try powering off your device. Then, press and hold the power button until your device turns back on, hold down the Volume Down key until you see "Safe mode" on the screen.^[3]
• These steps might only work with Samsung devices. Check your manufacturer's site for steps on how to boot into Safe mode on your device.

Remove administrator access and apps. Hackers will often install apps with administrator privileges on target Androids, including crypto miners, keyloggers, and spyware tools. Before you start removing apps, you'll want to check for and deactivate device administrator apps:

• Open Settings.
• If your Settings menu has a search tool, search for admin and tap either Device admin apps or Device Administrators.^[4]
• If that doesn't work, go to Security > Advanced > Device admin apps or Lock screen & security > Other security settings > Device administrators.
• If you see any apps you don't recognize, toggle off its switch to deactivate its administrative rights, or select the app and tap Deactivate.
• Some admin apps are installed by the manufacturer (or your workplace) and are necessary to remain active to run properly, so only deactivate the ones that you know aren't required.

Delete unrecognized apps. Whether you've found any odd apps with administrator rights or not, you'll want to go through all of your apps and delete the ones you didn't install. If you see some apps that came preinstalled on your phone, you might not be able to remove those, but others are easy to uninstall from your app list or in the Settings app under Apps.

Turn off app installs from unknown sources. If you use an alternative app store or download apps from the web rather than the Play Store, you won't have the bonus of Google's safety moderation and Play Protect features. Disabling installs from unknown sources ensures that you can only install apps from the Play Store.

• Open the Settings app.
• Tap Apps or Apps & notifications.
• If you're using a Samsung Galaxy, tap the three dots at the top-right, choose Special access > Install unknown apps.
• On other devices, go to Advanced > Special app access > Install unknown apps.
• Select each app in the list and toggle its "Allow from this source" switch to Off.

Clear app cache. In case anything shady is hiding in your app cache, it's a good idea to delete all cached data.^[5] Here's how:

• Open the Settings app.
• If you have a Samsung Galaxy, go to Apps, select an app, choose Storage, and then tap Clear cache. Repeat for all apps in the list.^[6]
• On other devices, tap Storage, choose Other Apps, select an app, and then tap Clear cache. Repeat for all other apps.

Change your Google account password. If someone had access to your device, it may be because your Google account is compromised. Before you reboot your phone to exit safe mode, make sure you're starting fresh with a brand new Google password.

• Don't reuse the same password you use for any other account—your new password should be completely unique.
• Remove any third-party apps which have access to your account that you don't recognize, and check your devices and sessions to see if there's suspicious activity you don't recognize. This will ensure no suspicious devices or apps have access to your account.

Reboot your phone. Now that you've made these changes, you can reboot your device into normal operating mode.

Install antimalware software and run a scan. There are many antimalware/antivirus options for your Android that don't cost anything at all. Most of the best options have paid upgrade options that allow the software to always run in the background, which can help you avoid getting hacked in the future. But for now, we'll just want to install some software so we can run a malware scan. Some excellent free options are Mobile Security, Sophos Intercept X, AVG Antivirus & Security, and Avast Antivirus & Security. All of these options are available for free in the Play Store.

• Once you download the app, open it, and then follow the on-screen instructions to scan for viruses and malware.
• If the scanning tool identifies a threat, you'll be prompted to remove it.

Reset your phone if needed. If you've tried to remove a hacker or malware from your device, but are still noticing poor performance and signs of intrusion, your best bet would be to reset your device to its original settings. Once you reset your device, you can sign in with your Google account password and start with a clean slate.

Keep your device up to date. Installing the latest versions of the Android operating system and Play Store app updates ensures that your device has the latest security patches.

Use a VPN. When you access the internet through a VPN, all of your internet activity is encrypted, making it difficult for potential hackers to monitor your activity. It's especially important to use a VPN when connecting to public hotspots, such as at a café or on campus. Choose a reputable VPN service rather than a free option.

Avoid rooting your device. While rooting your device gives you more customization options, it also enables access to malicious apps that can take advantage of your administrator privileges. Androids are highly customizable as-is—if security is a concern, don't install custom ROMs.

Only install apps from the Play Store. The apps you install from alternative app stores aren't necessarily inspected for malware. When you stick to apps in the Play Store instead of installing alternative app stores, you have the added protection of Google's quality assurance and safety oversight.

Turn on Google Play Protect. This feature of the Play Store runs safety checks on apps before you download them, which can protect you from malware and other harmful apps.^[7] The feature is turned on by default, but may have been disabled. Here's how to check:

• Open the Play Store app and tap your profile icon.
• Tap Play Protect.
• Tap Settings.
• Turn on "Scan apps with Play Protect."

Keep your eyes on your device at all times. Don't let your device out of your site—a hacker might look at an unguarded device as an easy hacking opportunity.

• Your PIN or password should be difficult to guess—using "1234" is not a good idea, even if it is easy to remember.

Don't fall victim to phishing scams. Sometimes hacks occur because an unsuspecting user clicks a link in an email or text message and enters their login information, thinking they are signing into a website they use often. If you're not completely sure that a message comes from a trusted source, never click unfamiliar links, open attachments, or reply to messages with personal information.^[8]