iPhone 3GS maxing out volume when plugging in headphones

Link to Apple support forum thread for this problem: https://discussions.apple.com/thread/3545978

This is video of a problem I've recently started having. Sorry for the poor quality/choppiness; I had to try and recreate this problem one-handed while filming with the other.

Plugging headphones into my iPhone 3GS causes the volume to max out without me increasing it, which is obviously very annoying; if I rotate the plug the volume decreases, but still remains at a louder volume than where it was before I plugged in the headphones.

Additionally, if the headphone plug rotates while it's in the jack (e.g., if I have it in my pants' pocket and I'm walking or sitting/standing up) the volume also changes: sometimes it goes down and sometimes it goes up.

If I use non-Apple headphones, however, the volume maxes out and just stays maxed out, even if I rotate the headphone plug.

Any thoughts? Do I need a new headphone jack on the actual iPhone?

Category:

Science & Technology

Tags:

• IPhone
• 3GS
• Headphones
• Vol