I had used a protective cover for one thing or another smartphone, but each time the panic was before application: "Please no bubbles". In this "film" which is actually more, namely a "glass" (am not sure whether it is not yet easy-quality, thicker plastic is), the extremely light and definitely applied after cleaning the document glass, without bubbles on the screen leaves, no wishes remain unsatisfied. The "glass" is applied cleanly within 5 minutes and without any problems.
One or the other could be the tangible edge / transition between smartphone and "glass" disturbing, but that is inevitable when a around 1mm thick sheet.
I am more than satisfied and would buy the Goodstyle film again, I should even buy a new smartphone, or for any reason whatsoever, a substitute for the current smartphone is needed. The price is certainly not without, but for the quality and easy application of the film, is it worth it to me anyway.