1 Check your coverage area to make sure that you're in an area with cellular network coverage. 2  Restart your iPhone or iPad. 3  Check for a Carrier Settings Update. 4  Take out the SIM card and then put it back in. 5  If the SIM card is damaged, or doesn't fit in the SIM tray, contact your carrier. Check for a Carrier Settings Update. 2  Take out the SIM card and then put it back in. 3  If the SIM card is damaged, or doesn't fit in the SIM tray, contact your carrier.
Tinnitus is the medical term for hearing noises in your ears when there is no outside source of the sounds. Tinnitus is often called ringing in the ears, but it may also sound like blowing, roaring, buzzing, hissing, humming, whistling, or sizzling. The noises you hear can be soft or loud. You may even think you are hearing air escaping, water running, the inside of a seashell, or musical notes.
Frequently, however, tinnitus continues after the underlying condition is treated. In such a case, other therapies -- both conventional and alternative -- may bring significant relief by either decreasing or covering up the unwanted sound.Prolonged exposure to loud sounds is the most common cause of tinnitus. Up to 90% of people with tinnitus have some level of noise-induced hearing loss. single exposure to a sudden extremely loud noise can also cause tinnitus. A variety of other conditions and illnesses can lead to tinnitus, including: 1  Blockages of the ear due to a buildup of wax, an ear infection, or rarely, a benign tumor of the nerve that allows us to hear (auditory nerve).