Xcode not detecting my device

Open the Organizer in Xcode, go to devices, find your device and click the option to use for development

This Worked for me.

• Quit Xcode.
• Disconnect the device.
• In a terminal window, type: sudo pkill usbmuxd (it will be restarted again automatically)
• Restart Xcode
• Connect the device

Your device should now be visible again in Xcode!

I just plugged into another USB port and it detected by device.