Original post by: John ,
3m tape. Check eBay for "Ipod touch 4 adhesive" your casing must be in good shape for a proper fit. If the corners are bent AT ALL they must be reshaped prior to installing the new screen. I do not like using only tape. After sealing the screen in I fill in the space between the glass and plastic bezel with JB Weld and clean it up before it sets. The Jb weld must be only in the crack to help seal it in. It should not be visible to the eye.