IQShield LiquidSkin Full Cover
Next, we want to recommend LiquidSkin from IQShield. Basically, they offer a thin film that's easy to install and offers a decent amount of protection. They're one of the highest-rated options for the Galaxy S8 and S9 both.
This company uses a unique wet-application with its "smart film" to ensure the best fit for your Galaxy S9+ display. It's not tempered glass, but that means you'll get a perfect installation and plenty of protection without breaking the bank, or dealing with touchscreen issues.
You'll get a proprietary LiquidSkin screen protector film, installation tray, lint cloth, and a squeegee to get rid of bubbles. This specific kit is a full-body application, so you can cover the front, sides, top/bottom and back of your Galaxy S9+.