Method 1: Unlock your Galaxy S9+ using Google credentials When it comes to unlocking the screen of your Galaxy S9+, the primary option that you must use is by entering your Google credentials.

If your S9’s screen passcode works normally throughout the observation period of 24 hours, that’s a clear indication that one of the apps is problematic.

There are a lot of cool little features that Samsung didn't mention when it announced the Galaxy S9.