- cutter blade or a knife
- LCD polarisation foil (depending on model/display)
- Torx screwdriver to open phone
Open the phone and disassemble the display unit. Maybe its nessecary to lift out the display from a frame.
Take care on the display contact rubber at the back of the display.
Take the knife or cutter balde to loosen the display foil at the upper display side. Do not fold the foil!
After loosing the foil clean the display/foil and remove the glues remnants.
Turn the foil to 90 degrees and you'll see the inversion of the display colours. Now you can fix the foil in display frame
After inversing display you can tune the dispaly contrast to get best view to the display.