One hand holding a cell phone hand tremor: first of all, consider the symptoms caused by idiopathic tremor, idiopathic tremor many times will not affect the daily work and study, can be in many years will not have very obvious progress. Most of these patients do not need medication, if the normal affects the daily work and study, you can take propranolol under the guidance of the doctor to control the normal. Secondly, one hand holding a cell phone hand shake, may also be hepatomegaly and other neurological disorders resulting in discomfort, it is recommended that patients go to a regular hospital to improve the examination, to clarify whether there are intracranial lesions resulting in hand shake. Lastly, the shaking of one hand with a cell phone may also be a tremor caused by hyperthyroidism. Patients with hyperthyroidism will also have symptoms such as hyperphagia, excessive sweating, accelerated heart rate, weight loss, etc. It is recommended that patients visit the endocrinology department and take medication to control hyperthyroidism under the guidance of a doctor.