Tale of woe about 64gb MicroSD cards.
I love these things and have five of them but they don’t seem to take repeated formatting very well. After being satisfied with my first three I bought two more from Best Buy. Neither of them worked and Best Buy exchanged them.
One of them worked okay until I formatted it for the third or fourth time, then it failed. The other didn’t work at all.
I contacted SanDisk and got one of them replaced. It worked.
Then SanDisk replaced the second. It too worked.
I cannot now tell which card is which, but I the other day I reformatted one a couple of times and it stopped taking a format. Every time I tried it seemed to get worse. After a couple of failures I tried other formats than exFAT, with no luck. I tried another formatting tool which usually works but it too failed.
As I said above, I have five cards now. Only one of them remains bad and I’m hoping that what a previous writer said is true - that there was a bad batch - because other than this string of issues, I have had great experiences with SanDisk products. I’m almost embarrassed to ask for another replacement but although the price is reasonable, $65 is just too much to let it go.
Imagine, $1.00 per gigabyte of storage! On a card smaller than my thumbnail! Outstanding! If they become more reliable I’l be picking up at least two more.