Hello, i have a very weird problem. My nexus 4 cant connect to pc as mass storage device.. It worked fine like 4 days ago.. I dont know what happened or what else i can try.. Already tried: usb debugging on/off, factory reset, usb settings in storage menu, different usb port, NOTHING HELPED! There are another weird thing that i spoted is that it only charges through usb when i have nothing selected in storage>usb connections menu, as soon as i try to select mtp or camera it stops from charging and nothing happens. Same problem for AC charging it wont charge when theres mtp or camera selected, and only charges as USB... I'm confused.. Are there any ways to get it working again?