If you had the foresight to set up Samsung's Find My Mobile you can log-in to your Samsung account and Find My Mobile and unlock the phone from there. Otherwise there isn't anything you can do but factory reset your phone and use your Google information to get back into it. Before you do I believe you can still go to Samsung's Find My Mobile and backup your device before the reset. You only have to set it up if you want to be able to unlock your device remotely. You'll have to look around the Find My Mobile features to find the backup option, I don't know which one it is.
If you also don't have your Google information, congratulations you now have an expensive paperweight.
These are security measures for a reason. Wouldn't be very secure is you could just drop a line or two on some forum and get the key to get in...
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Best wishes
