Unless you regularly open phones and repair them, in which case you probably wouldn't be asking, about the only "kit" is a repair shop and payment for a repair. Sorry.
Get an off-the-cuff "guesstimate" first, though - the phone is only about US$50, and a repair would probably cost more, so replacing the phone is cheaper. (You do have everything important backed up to at least 1 cloud account, right?)