To begin with we will remove the tray to be able to remove the back cover in the next step.

With the help of a tine unhook the back cover.

We extract the three Phillips screws, (PH # 00) that hold the shields that cover the connectors of the flex that we need to disconnect to be able to detach the battery.

Finally, with the help of an opening tool we will lift the side of the battery a bit so that we can insert a more appropriate tool to detach the adhesive that holds it to the chassis of the phone.