Colorful foil - no impairment of the OPERATION !!

Now the function of the films:
The application is well explained in a manual and it is easy (to perform even without instructions)

The film beeinträchtugt not the display! Brightness and contrast are not impaired.
The film is tailored and covers the entire screen surface, so that 100% protection against scratches or other nasty surprises there.

Strong buy recommendation! 6 x mumbi Screen Protector Sony Ericsson Xperia ARC / Xperia Arc S Crystal Clear Screen Protector invisible

Another recommendation:
I recommend a rubberised Hard Case to protect the entire device, together with the hard case and the film has a very good protection and the phone can be operated in spite of both components 100%.
Sony Ericsson Xperia Arc S Rubberized HARD CASE COVER IN PURPLE