The following four steps show how to install the back cover support adhesive(s).

If you're replacing the fingerprint sensor or the rear bezel, be sure to complete those tasks first.

Figure out how the support strip aligns with the surfaces by matching the adhesive strip's contours with the adhesive residue and the phone frame.

Generally speaking, the adhesive side that's covered by a clear plastic liner should affix to the back cover, while the side that's covered by a colored liner should affix to the phone frame.

Use an opening tool and high concentration isopropyl alcohol to remove all adhesive residue from the phone frame.

If you're re-using the back cover, remove all adhesive residue from the back cover.

Do not use metal tools as they will scratch the back cover's coating.