Since my Lumia 735 is quite large, and I want to do without an additional protective cover, I bought these sheets. They were quickly sent in a letter, and are quite easy to apply. And when I look at how the first film looks now, I am happy to have bought it. The films protect the screen really well - it will stick firmly, and comes off at any point. The service works great with film, I may here detect any impairment.