Yesterday I was downloading and a message appeared about not being able to write to the SD card. I wasn't trying to do that at the time. I went to File Manager (that Simple orange kind) and it didn't show sd. My Files did and claimed that it was 16% full (512 gb nominal). I rebooted and that seemed to fix it. The A02s itself was at 90% (this morning 17% and 91% respectively). I have moved some downloads to sd or think I have. The same thing has happened today. It's as if the whole phone has gone screwy. The camera wasn't working, though now it is, the keyboard was messed up, hence my lousy replies to Nick Dalzell about my new computer (sorry) and it was sluggish. I rebooted again and now most things are back to normal. I'm worried about that sd card, though. It's still not showing up in File Manager. Now it's not showing up in My Files either. I haven't taken it out or unmounted it, and the phone hasn't gotten wet. What do I do?