Protecting feels very smooth. You have to watch where you stores the device. For example, my monitor stand has only a few degrees of tilt - the smartphone slips but as already gone - and very quickly. The service is good, the finger does not stick, fingerprints (if any because it remain) are easy to wipe.
Removing and Replacing's not a problem. There remain very small bubbles may remain, but these veflüchtigen completely within 1-2 days.
Now to the reason why I (k) Give a star:
Since this protection should survive the scratching with a keychain / knife (hah!), I first was not worried. After a few days but I have already got first scratch - as I have taken it to slide on the table. As well must have come in between a few specks of dust.
Conclusion: not worth the money. Because you can buy a cheap foil same as the parts so quickly and so easily scratch especially. The manufacturer has the nerve to advertise with pictures of knife cuts is remarkable.