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If you see red spots near your ear or neck, better you check your mobile phone. Because a British group has explained that rash on people's ears or cheeks should be on alert for a skin allergy caused by too much mobile phone use.

Citing published studies, the group said a red or itchy rash, known as "mobile phone dermatitis", affects people who develop an allergic reaction to the nickel surface on mobile phones after spending long periods of time on the devices.

Nickel is a metal most commonly used in mobile phone. It is one of the most common causes of allergic contact dermatitis.
Earlier this year Lionel Bercovitch of Brown University in Providence, Rhode Island and colleagues tested 22 popular handsets from eight different manufacturers and found nickel in 10 of the devices.

So, it is better to avoid mobile phone coated with Nickel.