What are the methods to deal with wrinkled window film?

[ZaneMarie]

Use a wallpaper scraper to lift a corner of the film, then slowly peel it off, trying to leave as little adhesive as possible. Afterwards, carefully reapply it using a squeegee. Use a hairdryer to heat the wrinkled area to speed up the smoothing process, then use a soft, clean cloth to wipe it flat. Use a sharp object like a toothpick to puncture stubborn and particularly small bubbles, as well as those that cannot be smoothed out with a squeegee, to achieve the desired effect.