I used a polyester swab to clean the LCD and the frame of any dust and debris before placing the new digitizer. I also used small dabs of silicone adhesive on all four corners of the new digitizer where it sits in the frame. This should ensure that it will not come loose during daily use but will let me still change it again if I have to. The whole procedure is relatively straight forward. Just take your time and watch the ribbon cable retainer. I found those to be the trickiest part.Good luck