I have new iPhone5 64GB and I have no sound or ring unless I have headphones in.
I did factory reset as I though some setting was messed up that I could not find.
Switch is in the right place, volume is up, no music or audio from videos
no soound from Sri
All fine with head phones, has to be bad phone no??
This issue was common in laptops, and it usually occurs when the electronic switch gets stuck. Replacement is the only option.
Not necessarily true; it depends if the jack uses an electronic sensor or a mechanical one.
If mechanical, your local Genius Bar might be able to fix it with a toothpick. (Seriously.)
You might also try jiggling the headphone plug as you pull it out of the jack.
I have been in the service and hardware replacement industry for over 8 years. A toothpick inspired fix is simply that... a fix. It is not a solution to the problem. The until will still need a replacement (repair) as the issue will most likely occur again. Also, to uphold the quality of service, and given the product was purchased new, they will most likely replace it.