iPhone 5 doesn’t connect or show up in iTunes
Make sure that you have correctly entered the pin code and
deactivated the device auto-lock feature
Do not use a USB hub. Please connect your iPhone, iPad or iPod Touch
directly to your computer
Use a different USB port on the PC. For desktops with USB connectors
on the front and on the back, try with one of the back connectors
If possible, try using a different USB cable
Restart the Apple Mobile Device Service and set its Startup type to
“Automatic” by following these instructions precisely
Install the iOS drivers required for the PC to correctly recognize
the device separately and without installing iTunes.