With the launch of Apple's first foldable screen phone, iPhone Duo, many product manufacturers have subsequently introduced various peripherals for this device. For example, PITAKA has launched a "shell and film integrated" protective case for the corresponding model, with the single-screen protective case priced at 374 yuan and the set priced at 749 yuan.

This "shell and film integrated" outer screen protective case combines a 9H+ tempered glass film with an aramid fiber frame. The overall thickness of the front cover is about 1mm, of which the tempered film accounts for approximately 0.6mm. The case weighs around 17 grams and is available in color options such as Sunset, California Old Dream No. 1, Dusk Night, and Black Gray.

However, there are also reports indicating that this type of "shell and film integrated" protective case for the outer screen has a dust cleaning issue. Consumers need to replace it at regular intervals; otherwise, it may lead to scratches on the polished edges of iPhone and Duo due to friction from accumulated dust. Therefore, consumers should make their purchase decisions based on their own needs.