Hi. I have saved files in my sandisk ixpand using my iphone6 plus. I didn’t have a problem viewing my files when my otg is attached to my phone. However, after i used the same usb to view files in my personal computer, when i attached it again to my phone, i couldn’t view my saved files anymore. It‘S like it’s hidden in a separate folder that i can’t open when using my phone. How can i few my saved files again using my phone?