How to unlink an iPhone from another one?

I got an iPhone 5 a while ago and it linked with my old iPhone 3GS so no matter what I download or delete from a phone it deletes it on the other one. I want to wipe clean my 3GS one and get rid of it but if I do it's going to wipe clean the one I use now. How do I unlink them?

How to input audio to a microcontroller?

For a senior project, my design partner and I are trying to take audio input from the iPhone 4 and have it connect to a small display screen mounted on the case; the display will "dance" to the music (ie.rising and falling bars or differing patterns and colors). We were looking for advice on

(a) A good type of microcontroller to use between the audio jack and the display that is reasonably small
(b) How one inputs audio to a microcontroller

Any input or further advice would be of great help.

I have 5 lines with att with iphone 5 on each?

I have 5 lines with att with iphone 5 on each and their due to upgrade now. If i upgrade all of them to an iphone 5s which is about $200 each without activating them. And i end up selling all 5s phones. Will i liable to pay off all 5s phones in the end?

IPhone 5 charger getting hot?

So my iPhone has been plugged in for about 20% into my wall charger (the one that came with it) and it feels pretty warm! The iPhone is charging fast and the only problem is the heat of the wall connecter. The charger is plugging up to a good working extension cord, and the USB part is definitely good, just bought it a week ago, and the iPhone almost 2 weeks ago. It's an iPhone 5

Added (1). The metal part that connects into the socket isn't hot at all, Just the outside of the charger

Should I get iphone 5s or wait for the 6?

I have the iphone 5 and I'm wondering if anyone who has the iphone 5s or knows a lot about it I was wondering what I should get… I'm not getting the iphone 5c because I already have the 5

How to reset/erase an iphone?

My sis just got me an iphone from a friend. Her friends stuff is still programed in the phone and i want to get rid of it. I went to settings then general and clicked reset then erase all contents/settings and varified erase iphone then it asked for her apple ID password for ***@rocketmail.com. I deleted what i could and replaced it with my stuff but how do I reset the phone completly without having her account password… I noticed a teeny tiny hole on the top of the phone is that a way to reset it at the service store?

Trading iPhone 4S for iPhone 5c?

So I have the unlocked version of 4s and apple just said they were trading all the iPhone 4's for 5c and I was wondering if I could trade my unlocked version of iPhone (white 4s) for 5c. And also do I go to apple store to trade it? ( i live in manhattan) and the store is really close to my house

How to transfer pictures from one person's iphone to my computer?

I need help. I'm a college kid without an iphone, If one of my classmates took a picture of all the work on his iPhone, and i do not have an iPhone to receive see the picture of all the work from my chem lab. How could he send that picture to my mac or my iPad? Is there such a way to do said task?

Please and Thank you.

How much would it cost to unlock an iphone 5?

Buying a phone from a friend and his phone is locked to vodaphone. I need it for the carrier '3' as they have a reasonable sim only contract.
How much will it cost to have the phone unlocked to maybe all carriers or just 3?