How can the protective film of mobile phone screen blister when it sticks? How can it stick?

Wipe the screen clean enough before pasting the film. When pasting the film, try to keep it at a constant speed. Please pull back less when bubbles appear to ensure that there are no bubbles on the film surface. Then use a wool felt scraper or a scraper with a pad to avoid scratching. Apply the film slowly bit by bit and press it on the surface of the phone. In this case, there will be no bubble soon.

There are two reasons why there are bubbles in the mobile phone film. One is air entry: as long as the bubble is pushed out from the edge with a card such as a bus card, it means that it is a dust problem if it cannot be pushed out. Second, stained with dust: lift the place where the bubble film is produced, stick it with transparent glue, suck the dust away, and then stick it on. At the same time, in order to avoid air, you can borrow a bus card to push it flat and bubble-free.