As already mentioned, the side edges are rounded, they are not covered by the film. No wonder.
Edit: After just a week of careful use, the film took several scratches in my pockets ... No key or object of actually likely to make scratches.
I'll see what it's long done with other movies.
Edit2: I've realized that it was the outgoing wire tying my headphones which was originally scratches, no problem once removed of the pocket. The film therefore fulfilled its protective function well.