Why hospitals do not give the use of cell phones?

In the hospital to play cell phones, 60% of the medical instruments will be interfered with; in the 1-meter range to play cell phones, 90% of the medical instruments will be interfered with, the operating room by the interference of the seriousness of the patient's life will be endangered. The public and patients generally believe that doctors receive phone calls and chat in the workplace and in the operating room, is disrespectful to patients, so that patients and their families do not feel safe.