So a few weeks ago I popped in my micro SD card, mounted, formatted and what not and away I went. Worked fine up until last night. The card does not read. I took the card out, put it back in, restarted, nothing. I go to Settings>More>Storage and scroll the whole way down and "Mount SD card...Insert SD card" is grayed out. I assume my card could be corrupt though. I'm waiting until I get home to try the card in my reader I have. Could this also be a phone issue?