Nickel is essential for the effective operation of mobile phones. It is used in the microphone diaphragm, electrical connections and capacitors, and can be a major or minor element of the chemistry of the battery of the phone. It can
be used to shield users from electro-magnetic radiation and equipment from electro-magnetic interference.
Nickel is sometimes used on the surfaces of mobile phones to exploit its aesthetic properties and respond to fashion trends and the demand for greater choice of styles.

There are occasional reports of individuals experiencing flare-ups of existing skin related nickel allergies when nickel-plated mobile phone surfaces are placed against the skin (i.e. cheek, ear or hand) for long periods of time.

This advisory note seeks to advise manufacturers of mobile phones and consumers on how to minimise the risk of nickel related contact dermatitis.