Hi,

Unfortunately, replacing the glass on the s7 Edge is an extremely difficult job, this is due to the AMOLED display being very fragile.

You would need pretty expensive equipment to refurbish the screen to a professional level without breaking it.

It is possible, but also a very hard task.

Most people use heat, from a heat gun, and they use playing cards to slide in under the OCA (optically clear adhesive) due to the cards being thin, and useful for not damaging the screen, this is to separate the glass from the AMOLED panel.

You will usually need LOCA (liquid optically clear adhesive) and a UV lamp to cure the LOCA.

You may need other tools to assist in the repair of the glass, as you'll need to remove the logic board so you don't overheat that, Phillips screwdriver, plastic spudger to disconnect connectors, and you'll need to remove the battery, as lithium ion batteries don't like heat!

Removing the back glass is very simple, heat gun, and you can use a thin spudger to get underneath the glass.