Have replaced second set of headphones withing 6-7 months. First one just stopped working. Second set started doing strange stuff like starting music while on a call..skipping songs, sound going in and out, bringing up siri. My old apple headphones or other headphones work fine with a connector so its not a phone problem.
The 7 headphones are defective. Apple should be giving this item for free to any 7 owner on request.