I bought this protective film so do I protect my phone against scratches etc. The film looks good and protects the device very gut.Folie does not interfere with operation and can hardly be seen. No blistering. The touch screen is still should be good to bedienen.Mann but take time to bring the film ....... For me it did not work out the first time around. But with calm, I did manage .......... The film is also reasonably priced and recommended. !!!!!