have managed Bubble free installation

1. Vacuuming best with an ancient order of dust is stirred properly.
2. Take old rag with which you have previously cleaned the kitchen
wipe Display
3. Remove the foil from the screen protector and leave the adhesive side up, go drink coffee or overnight all are so.
4. Then give poor rating because you can not attach the film without bubbles ;-)

Joking apart, I have managed to get the film to be mounted on 3 devices
1. absolutely clean microfiber cloth to clean the screen.
2. make sure the dust is in the air, I have the whole mounted in the rain on our covered balcony.
Not quite pull off 3 carrier foil and immediately with a "debit card" or similar on-press and flatten the bubbles out.