When you receive the box, there is a plastic tab hanging out the bottom with an arrow indicating the direction to pull it. DO NOT PULL IT!!
You should flip open the box, where there is a QR code to access online instructions. There are no instructions outside the box to warn you not to pull the tab. When you refer to the instructions, you will see that the plastic pull tab is connected to a longer plastic film that covers/protects the glass sheet for the front of the phone. If you pull this plastic film, it exposes the glass to room air and dust particles. Although I was able to reassemble the sheet and eventually install the glass, there are lots of dust particles now trapped between the phone glass and the protector. Not very visible, but annoying, and no way to get them out.
The packaging really should have a warning "DO NOT PULL THIS TAB UNTIL INSTRUCTED TO DO SO" or words to that effect.
Installing the lens protectors are a bit tricky, but again, if you see the instruction video, not too bad.
The case/screen protection/lens protection combination looks solid.