iphone thinks headphones are plugged in
I've done a great deal of searching on this issue and found it to be very common. All of the usual remedies have not worked. I have tried the following:
plugging and unplugging (over 100 times in rapid succession)
cleaning the jack with a modified q-tip and alcohol
allowing the phone to lock while playing, removing the headphones, unlocking, and resuming play
soft reset
hard reset
factory restore
I purchased this phone used on ebay as is, no warranty. I called apple and learned the phone is three weeks out of warranty. I'm a very adept DIYer, so I don't mind opening this thing up to replace a part or two since it's already out of warranty.
Any suggestions?