Micro sd Isn't Working Right in Samsung

Westonian12141

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Jun 1, 2017
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I got a 256 gb micro sd for my phone, and it is a little sketchy. When I first turn on my phone, it works fine. But after about five minutes, I stop being able to write data to the card. I know it works, because I've put data on it, including some videos, and I can still view them, but I just can't change any data on the card. For example, apps wont work on it, since they are having to constantly read and write data. I was wanting to know it there is maybe a setting for this, because I sometimes seem to accidentally change settings at random.

I have a Samsung J7(2017)
It's running on android version 7.0, if you wanted to know.