Complex sentence: Bond gives Kaufman his cellphone, which unlocks it and tells him the code to press, however the code is for the taser on Bond's phone and Dr. Kaufman receives an electric shock.
Split into simpler sentences: Bond gives Kaufman his cellphone, which unlocks it and tells him the code to press. However, the code is for the taser on Bond's phone and Dr. Kaufman receives an electric shock.