Do not remove all the copper tape. Only remove the copper tape attached to the silver part of the motherboard.

Release the copper tape located at the top middle of the phone with a plastic opening tool. This will take some force since the adhesive is rather strong.

With the plastic opening tool, release the pop connector, by lifting up to release it. The pop connector should still be attached to the copper tape.

Pull up gently on the copper tape and pop connector to remove the back camera. It should pop out easily.