Hi, Welcome to the Samsung Members Community Canada. If you think your phone has been hacked, the very first thing you should do is perform a factory data reset( it erases your data so make sure to backup your data). This will clear all of your personal data off of your phone and kick out the hacker.
Once the phone has been reset, you should change the password for your Samsung and Google account, along with any other account you had on the phone, like bank accounts, etc. If any of your accounts have security questions, changing them may be a good idea. On top of this, you should turn on two-step verification for any accounts that have this option, including your Samsung account.
After you have done the initial setup on your phone, keep these steps in mind, so your phone does not get hacked again:
Create a lock screen for your phone, so no one will be able to unlock it even if they get their hands on it. You can also add biometric security features like fingerprint scans or facial recognition for an extra layer of protection.
Keep your phone updated with the latest software and operating system. Security patches are frequently installed during updates.
Only download apps from the Galaxy Store or Play Store. Apps from other sources could be filled with viruses or other ways for a hacker to access your phone.
After you install a new app, you will be prompted to allow or deny certain permissions. Tap Allow or Deny depending on the app. If an app seems fishy or suspicious, do not grant it access to any permissions.
