I have this cable and I'm not sure what it is for. What is it?

Ok. So this cable has what I believe is an AV input. There are3 inputs. Red, white, and yellow. An AV cable does fit into the input. Then, on the other end, there are 2 of what I think are outputs. One is black and the other is yellow. They look just like headphone jacks. They even fit into my iPhone headphone plug. The yellow side has a single black ring around it. The black side has 2 black rings on the end. Any help would be appreciated.

How to get the Wi-Fi option to turn on after being grayed out?

My friend bought a used iPhone 4 that works perfectly fine, except the option to turn on Wi-Fi is grayed out. We turned it off & on, reset the Network settings multiple times, updated it, restored it. Airplane isn't turned on. It's out of warranty, so Apple can't fix it. Is there anything else we can do?

Why my iphone 5 will not connect to mail server?

"Can't connect to mail server" After speaking to apple they told me its a Google problem and id have to contact them about this. I can't find a direct contact for them. I've had to delete my mail account and then put it back in so to access my mail. I have had to do this many times this past month. I have read forums that say to change to Gmail but i've had my Yahoo email ad for years and would prefer not. Any help would be greatly appreciated.

My iphone 4 is stuck on apple logo, why: WHY

I try to jailbrake it last night and unplug it by an accident: x i just turn off and when i try to turn it on the apple logo came up like always but this time it won't acculaty leave or the phone dint want to turn on why. How can i fix it? ( P. S) a friend of mines try to help me but he count cuz my power button dosent work:'. I have a computer with itune can i fix it with:_) please help please someone

Note app is really slow on my iPhone 4?

Ok so on my iPhone 4 notes I write stories I currently working on one right now but when I Type it responds slow and that, I asked my friends for help and they say shut down and wait so I did that but it was still slow when I was typing in the notes, I turned on the ringer switch up so the keyboard click noise would play and it would write better but nothing, I'm about to throw my Phone across the wall what should I do and please explain in steps thanks

Lifeproof Spare parts for iPhone 5?

I have an iPhone 5 life proof and I lost my headphone jack covers. Will these work for iPhone 5 or just iPhone 4/4s?

http://www.lifeproof.com/shop/us_en/iphone-4s-4/iphone-4s-4-spare-parts/lifeproof-headphone-jack-covers-and-keeper/