Hello. My phone is running 4.4.3. I have apps on the physical SD card. Any time I plug the phone into USB, be it into a computer or now with my new car, well, the car, any icons on the screen related to apps that are loaded on the SD card disappear. They also disappear from the app drawer (I think that's what you still call that.) Usually upon removing from USB, they reappear in the app drawer, but I then have to put them all back onto the screen. This is new to me as I never plugged the phone into USB until I just bought this car. It's the first car I've had with a USB plug to connect the phone to the radio system. Thanks in advance.