Now you want to remove the back cover. You can do this by sliding a thin plastic pry round the edges between the cover and the screen. The cover will click off as you work your way round it.

Don't pull the cover once it's coming free. The "M" symbol (fingerprint scanner) is glued to the cover so if you yank it, it'll snap and you'll break it.

Once the cover is free, gently heat round the "M" sensor and it will loosen the glue. Lightly press on the M and it will pop off. Once that's happened, you can remove the back cover.