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.
Earwax, foreign bodies or hairs in the ear canal can rub against the eardrum, causing a variety of sounds. In many cases, the cause of tinnitus is never found. Your doctor can discuss with you steps you can take to reduce the severity of your tinnitus or to help you cope better with the noise.