Be wary of purchasing the Zagg HD Clear screen protector for the Galaxy S9. Two different protectors, each installed by BB Mobile or the Geek Squad, had the edges coming up the next day. Instead of the third time being the charm, I got my money back.
Apparently the screen protector for the S8 was simply stamped as being compatible for the S9. There must be a minute difference between the two that is causing the issue.
Hopefully BB pulls it off the shelf until another batch of protectors can be tested and shipped out.