It's a good idea to replace the adhesive if you have opened up your phone for repair. It includes the backing layer, frame assist element and edge piece so that all of these pieces are aligned correctly before putting in place again with adhesive strips which makes it quick and easy installation process! Compatibility:

• This part is compatible with iPhone SE 3, SE 2, 8. This part for:
• Assist in maintaining its water resistance capability. It has layers to align perfectly to the frame. You need this part if your iPhone when:
• Any repair that involves screen removal. We ship nationwide!
• You can order nationwide and have your package delivered overnight. Tracking is included! We offer installation!
• Please contact us for more info. Please Note:
• This is a third party replacement and not an Official Apple product.
• Replacing the adhesive yourself is not guaranteed to make your device water and dust resistant.
• We suggest to watch online tutorial videos on how to install it.

DIY "PURCHASING PARTS FOR REPAIR ONLY":

• Please note we are not responsible for any damage/injuries caused during the setup or installation as it is intended to be done by a professional.
• Please strictly test the item before installation, don't install it if it is faulty or broken.
• Only install the item if you are confident with it.
• Don't remove any factory stickers or labels from the product if you are returning it or getting it replaced.