auto sync of iphone to iTunes

Hi dfranks1,

Welcome to Apple Support Communities. I understand that you're having trouble with iTunes launching when you connect your iPhone. I also see that you used some steps to reinstall the usbaap164.inf file which temporarily resolves the issue, but it returns after a few weeks. I can see why you'd reach out about this behavior; I'd like to help. I'd recommend continuing with the steps below, including contacting Apple if necessary:

"If your device still isn't recognized

Check Device Manager to see if the Apple Mobile Device USB driver is installed. Follow these steps to open Device Manager:

1. 1. Press the Windows and R key on your keyboard to open the Run command.
   2. In the Run window, enter devmgmt.msc, then click OK. Device Manager should open. 
   3. Locate and expand the Universal Serial Bus controllers section.
   4. Look for the Apple Mobile Device USB driver.
   5. 

If you don't see the Apple Mobile Device USB Driver or you see Unknown Device:

• • Connect your device to your computer with a different USB cable.
  • Connect your device to a different computer. If you have the same issue on another computer, contact Apple Support.

If you see the Apple Mobile Device USB driver with an error symbol:

If you see , , or  next to the Apple Mobile Device USB driver, follow these steps:

1. 1. Restart the Apple Mobile Device Service.
   2. Check for and resolve issues with third-party security software, then restart your computer.
   3. Try to install the usbaapl64.inf or usbaapl.inf file again.

If the issue persists, contact Apple Support."

If iTunes doesn't recognize your iPhone, iPad, or iPod

Best Regards.