Judging from the fact that my second film is very much observable and hard to miss (similarly to e.g. the one visible in this photo Jolla Phone 2026 - batch 1 - Dust building up between front camera and screen glass - #130 by Rusted), I very much suspect that only some (early?) devices have this second, slightly more permanent plastic film, while others (later assembled?) don’t. No peeling strip on the second one.