The headphone jack on the Apple IPhone has gotten a lot of bad press because it does not work with most standard headphones because it is recessed. That obvious annoyance has concealed another critical drawback to the headphone jack design - it is clearly a weak point in the IPhone's armor. Many generations of cellular phones have used simple rubber or plastic plugs to keep dirt, debris and water from getting into the headphone jacks. Apple, however, made no efforts whatsoever. If you look closely into the headphone jack when the IPhone's screen is active, I swear you can see the light and that makes me wonder how protected sensitive internal components are.
Immediately after its release, many reviewers were quick to test the Apple IPhone's durability. The results were impressive. Apple's first endeavor into the cellular phone market place was surprisingly tough. The sophisticated piece of equipment resisted scratches and impacts quite well. This super phone did seem to have a weakness - water.
I do not know if a single wayward raindrop tumbling from an overcast sky into the IPhone's headphone jack would be enough to turn the phone into a paperweight. I don't know what would happen if lint or dust from a person's pocket got into that little porthole of doom. I don't want to find out. I set out to create a plug to protect my precious IPhone with very basic supplies.
Some quick warnings - this instructable requires the uses of sharp pointy tools. The use of proper safety gear is recommended. Also, the IPhone's headphone jack was meant for use with the headphones that come with it and not my little plug. I've had no problems but that doesn't guarantee you won't. If you try this and somehow damage your phone in the process - you're the one to blame. The final product is very tiny...you're baby may eat it. If any harm comes to you, your phone, your baby or anything else don't come whining to me :)
Step 1: Find a Doner 3.5mm Plug
The basis for the plug is a normal 3.5mm headphones connector. The easiest way to get one of these is from an old/cheap set of headphones. You can buy just a plug from radioshack but the construction is a little different. They often give away cheap headphones with stuff so I wouldn't think it would be hard to find.