If you already have iTunes but the iPhone still isn't recognized, follow these steps to refresh the driver:
your iPhone to your PC using a USB cable and unlock the screen. Right-click the Start button and select Device Manager . Locate Portable Devices . You should see "Apple iPhone." Right-click "Apple iPhone" and select Update driver . Choose Search automatically for updated driver software . 3. Reinstalling the Apple Mobile Device USB Driver
Disconnect your iPhone, restart your computer, and reconnect the phone. Troubleshooting Tips
Check your iPhone screen. If you see a prompt asking to "Trust This Computer?", tap Trust .
If you prefer the standalone installer, you can download it from the Apple Support website . 2. Manual Update via Device Manager
Type or copy/paste the following path and press Enter: %ProgramFiles%\Common Files\Apple\Mobile Device Support\Drivers
Right-click on the file named usbaapl64.inf (or usbaapl.inf ) and select .