My phone isn't connecting
My iphone 5s will not connect to itunes on the computer. I have tried restarting the computer, using a different cord, everything.
iPhone 5s, iOS 8.3
Since you do not indicate what computer OS you are using, here are both support documents for when the device is not recognized in iTunes.
Mac: If you don't see your connected device in iTunes for Mac - Apple Support
Windows: iPhone, iPad, or iPod not recognized in iTunes for Windows - Apple Support