Hi guys, maybe I've missed something, but when I connect met Mi2s to my pc it starts charging, but never connects like it used to - as an mtp device. I don't get the option on the phone to select between files/camera like it used to. The pc is the same as I have always been using, as is the phone, even though I have updated the phone a couple of times (it's on MIUI 4.8.15). Did I miss something? Why did something so basic stop functioning??