Whitestone Dome Tempered Glass (UV Install)
Next on our list is something you probably have never heard of before. Or, if you did, it was on the Galaxy S8. This is a brand known as Whitestone, who sells a Galaxy S9+ tempered glass screen protector and a UV light that cures the glass into place. It's crazy technology, but it works.
This isn't for the faint of heart but it's totally worth the protection. WhiteStone uses a special liquid installation process where you manually install the screen protector, then use a UV Dome Light machine to "cure" the liquid. This provides the absolute best screen protection experience for curved devices. The video above is a review of their product for the Galaxy S8. It's not permanent and can be removed if necessary, so don't worry about that.
Basically, where most glass protectors don't fit right or have gaps on the screen and touch sensitivity fails, this one won't. The liquid fills in the entire area, then curves the glass to the screen. These typically run around $60 but are often on sale for $40, which is still less than a ZAGG InvisibleShield. Stay tuned for a full review, or get one right away for your S9+.