Welcome to HealthCare Magic
Hope you are doing good. Well these are not sign of nerve injury
with nerve injury you could have other problems like hearing loss
etc. It is kind on infection in your ear which causes pain and headache and there is possibility that the heat produce by your cell phone increase the pain. You should visit an ENT specialist
to examine your ears. Tylenol
will help with the pain for awhile but wont help with the infection.
I hope have answered your query feel free to ask if you have any query, wish you good health, Regards