When I plug my iPhone into my new mac it vibrates constantly?

i got a mac book pro (with retina display) yesterday and today I went to plug my phone in and it vibrates constantly? it goes from being connected to not being connected and it happens in both usb ports..

Hey Rachael214,
Thanks for the question. I understand your iPhone seems to be disconnecting and reconnecting to your MacBook constantly. To troubleshoot this issue, please see the following article:
iOS: Troubleshooting USB connection
http://support.apple.com/kb/TS1286
1. Update to the latest version of iTunes.
2. Plug the device directly into a high-power USB 2.0 port on the computer. If possible, use a USB port on the back of the computer.
Avoid plugging the device into a keyboard, display, or standalone hub. The USB ports on these accessories may be low-power or only offer USB 1.x connections.
3. If you are using an accessory, remove the accessory and connect the device to the computer using only the Apple 30-pin to USB Cable or Lightning to USB Cable.
If you have access to additional Apple 30-pin to USB Cable or Lightning to USB Cables, try testing with another if the first one doesn't work.
4. Restart your computer and device. To restart your device:
Hold the power button until "slide to power off" appears. Slide to power off your device. When it is off, press the Sleep/Wake button to turn it back on.
5. Disconnect all USB devices from your computer, except for your keyboard and mouse. Then reconnect the iOS device. If the issue is resolved, reconnect other USB devices, testing after each connection.
If the issue persists and you are using virtualization software to run another operating system alongside Mac OS X, quit that software; it may create virtual USB ports that may be causing the issue. Or you can try to control or restrict access to USB ports while running the virtualization software.
Thanks,
Matt M.

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