Hello, Had the same problem. I solved it myself it's pretty easy. The headphone port on top of the phone collected lint and fibers from my clothing like your jeans pocket. The lint got in between the contacts of the headphone terminals so it was open circuit so the sound was cut off. Just remove back cover unscrew headphone port clean inside with tooth pic using the pic to remove as much lint and fibers as possible the spray some electronic contact cleaner into hole flooding it so it pours out. Use plastic friendly cleaner as the plastic housing would melt, the can must say plastic safe. Hopes this helps. CHEERS /Randy from Trinidad

Hi! I have an iPhone 1st gen. The ringer is very soft even if the volume is already at max level. Is there anything i can do to improve the voluem?