Q&A for How to Fix a Hacked Android Phone

Always check and see what's running in the background of your phone. Make sure you know what permissions these apps have, and that they aren't doing anything you don't want them to do, like tracking your location.

You should first use a secure, separate device to change the passwords for all your compromised online accounts, enable two-factor authentication, and contact the service providers. To address the phone itself, obtain your device's official firmware and a compatible flashing tool (like Odin for Samsung) from a trusted source, such as your phone's manufacturer or XDA Developers, onto a computer. Then, follow instructions to enter download mode on your phone and reflash the full firmware. This process will reset your phone to its factory state, removing any malware.

To prevent password compromise, you must use strong passwords. Avoid common words, names, or easily guessable sequences, as these are often targeted by hackers. Instead, create unique passwords that combine uppercase and lowercase letters, numbers, and symbols, like `@6utterf1y`.

You can remove unwanted apps and files by performing a hard reset, which will erase all data and user-installed applications, restoring your phone to its original factory settings. Always back up important data first, as a hard reset is irreversible. For detailed instructions specific to your device, consult your phone's manufacturer or carrier.

To recover your hacked WhatsApp account, uninstall and reinstall WhatsApp from the Google Play Store, then verify your phone number with the 6-digit SMS code to log out unauthorized users. If you cannot receive the code due to a compromised SIM, contact your mobile carrier for a new SIM with the same number before re-verifying. Enable Two-Step Verification in WhatsApp settings and avoid sharing codes or clicking unknown links to secure your account going forward.