Had that happen to my wifes phone ,take a can of air and stick it in the ear phone hole and blow air into there.The phone works great after that.....hope this helps.
Went for a ride on sunday from red deer to penhold and back on the red deer river and found great snow on and off the river,but my 4 year old daughter kept falling a sleep she slept 1/2 way there and just about all the way home .It was challange to hang on to her and drive at the same time ...