you will need to purchase replacement adhesive. I also wouldn’t recommend opening the device unless you have lots of experience. the AMOLED display is incredibly fragile and will break 9 times out of 10 when opening the phone.

I do want to mention that the OLED screen is VERY fragile and you really shouldn’t attempt this without ordering a new screen. I work at a repair shop and we’ve refused people at the door because the repair is near impossible. The OLED is almost designed to break when you pull the assembly apart.