Prior to update I had an option when plugging phone into my computer to use the USB for charging only. Now it appears that option has been removed. Anyone see the option? All I'm getting is for options now is Mass storage, Media Devise (MTP) and Camera (PTP). I felt save plugging in my phone at work to charge but now that I can't choose charging only I'm concerned that if my phone gets a virus I would share it with our computer network.