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