How to prevent being hacked

Keeping your phone up-to-date is the best way to do this.

Open settings, scroll down to "INFO" near the bottom and click Android version. Then tap the "check for update" button and update if available.

Lower end phones don't always get the security updates they should, in this case you may want to get "Malwarebytes" from the Google play store. It's totally free and does a good job of freeing your phone of malware.

Also, do not download any strange apps or files from the internet.

Hope this helps!