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Question

MicroSD suddenly not working on Galaxy S7

Until recently, my 64GB microSD has always worked with my Galaxy S7 without any difficulties, but now it's suddenly stopped detecting the card. At first, I thought it was a result of the SIM/SD-card tray being a bit cracked on one end, though the SIM could be read. But I got a brand new tray, and the SD-card is still not detected, although the SIM is still easily read. My tablet is not detecting it either. My computer, however, detects the microSD just fine, so I tried reformatting (to exFAT), but it's still not detected. I did have some trouble transferring files between my computer and the SD, but the process of copying all data over to my computer before reformatting some days later went completely fine. I haven't had any trouble transferring files to and from my computer and microSD after reformatting either. My phone, however, is not detecting the card at all. The only sign given by the phone of an SD-card being inserted is it taking a longer amount of time for it to wake up from standby.

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All Answers

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Answer
Have you tried...

In reply to: MicroSD suddenly not working on Galaxy S7

...using the S7 to do the format on it?

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I could try this

In reply to: Have you tried...

But is it even possible to format an SD card that's not detected?

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Won't know if you don't try.

In reply to: I could try this

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I looked there

In reply to: Won't know if you don't try.

But the SD card isn't detected anywhere on my phone unfortunately, so I can't format it from there

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So the next step

In reply to: I looked there

Is to try a new card. If the new card doesn't work, it's a phone issue. Or you picked a too large card. I've see folk pick up that 200GB card and few phones support that.

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In reply to: So the next step

Well, the card worked for a long time, so it does support my phone. And seeing as it isn't detected on my tablet either, it's definitely some issue with card. I just don't understand how it's still being detected and entirely usable on my computer when it's the opposite for my phone.

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So you have not tried a new card?

In reply to: -

Once in a while a client gets stuck without trying the usual. They want something else or "this card to work." They are often left to ponder how things work.

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I have not

In reply to: So you have not tried a new card?

I don't have any other cards to test, unfortunately, but I'm pretty sure the fault lies with the card itself, so I'll go get a new one and hope it works.

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The card works on a PC?

In reply to: I have not

While it doesn't help you could buy your new card with some adapter that lets you use is as a backup drive for files you can't lose on your PC?

I find many folk forget to backup what they can't lose.

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Just get another one.

In reply to: -

Most also come with an adapter so you can use in a standard laptop and desktop media center too. They aren't that expensive, and I'd not trust the old card anymore anyway.

Your approach is like kicking the pitbull dog and hoping it won't come back to bite you, instead of using some pepper spray to drive it away.

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In reply to: Just get another one.

My approach is checking if there's any chance the card can be fixed before discarding it. But yeah, it seems getting a new one is the best way to go after all, seeing as I got all the files transferred. Thanks, people

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Answer
The fact that phone and tablet don't detect this card.

In reply to: MicroSD suddenly not working on Galaxy S7

Means its time to try a new card.

One last try? Check the user manuals on phone and tablet on how to format a new card in the phone and tablet.

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Answer
Data cards are the weakest link.....

In reply to: MicroSD suddenly not working on Galaxy S7

....and having to replace one is relatively inexpensive and easy to do. I would prefer to replace a memory card vs. my phone. This is nothing new.

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