If the edges of your screen protection begin to peel or curl, there are two likely causes. 1. Poor alignment during the application process: If the screen protection is not aligned precisely, an overhanging edge with exposed adhesive will not seal properly. 2. Insufficient preparation of the phone’s edges: Before applying the screen protector to the phone, you must thoroughly rub-down the curved edges of the phone with the cleansing wipe and the microfiber cloth, and then use the dust-removal sticker along the edges to prepare the surface to stick to the screen protection.