It is a useful exercise to watch over the shoulder as a proficient owner takes apart his Tablet (to replace a cracked screen) and puts it back together again:
This should also speak to how to take apart cell phones, notebook screens, etc. Of course, the warnings given are not for a lark; one can get into a lot of trouble, really fast, here.
How tweredun, and what the innards look like. Useful. END
F/N: For something that is downright scary, look here at how a Microsoft Surface Pro was opened up, with the aid of a heat gun, yes a heat gun on plastic and next to delicate electronics. Not for amateurs, or the faint of heart.