When my sister before went to the doctor because she complain of ringing of her ear. The doctor did an ear training online test to her and told my sister to minimize using the mobile phone. My sister followed the doctor until she use the mobile again as often when my sister is not busy. Sometimes mobile phone is really useful because it communicates to the person easily especially if this person came from the other place. But mobile phone is not good also because it can damage your hearing due to the radiation that came from the mobile phone.