How do I back up my memory card which says unsupported on my phone

Feb 6, 2019
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I put my memory card in my phone and it said that it was unsupported and needed to be formatted but I need to back up the contents before I do that so I don't lose everything. I need to know how to do that
 
Feb 6, 2019
2
0
10
No I took my memory card out of my phone and then reset my phone and I transferred some stuff to my card from my tablet , then put it back in the same phone that's when it said unsupported