This issue still continues with flagship Samsung devices. Got the same SD Card read write error in New Galaxy S10+. My SD card is Sandisk Ultra 128 GB and have been using it since 2017. It contains 3000 photos of my vacations. I purchased the phone on Amazon India and I started getting the above error from Day 1. I escalated to Amazon . They arranged for Service Technician visit and he was not able to sort out the issue. This particular SD card has served well in Galaxy S7 and then in LG V30+ and never once was I bothered. Amazon has issued a replacement S10+ and I am keeping my fingers crossed. Today I tried to back up my SD card to my laptop. Well expectedly it didn't go well. I was able to back up my music and some videos and around 750 photos out of 3000. But unfortunately I lost majority of my memories. Thankfully some were backed up in Google photos. Here in India, nobody seems to be aware of this issue. Even Amazon technical team is clueless. They have promised for full refund in case same issue occurs in the replacement phone.
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I've had the same problem but compounded by the fact that I have a non-Samsung phone (never got on with them, Bixby, etc). I haven't seen this specific answer yet so I'm sharing for non-samsung phone users. I moved from a Pixel 2 to a Huawei phone, to resync and pair my Frontier S3 to the new phone I performed a reset and lost my paid for watch faces. Finding them was not easy as the galaxy store apps aren't available (I think) but here is what worked for me. pair your watc h & phone install the Galaxy Wearable app on your phone click on Discover on the bottom of the app (if you're not already on the right screen) on top watch faces, click on view more this appears to load up another app then click on the options (three lines) in the top right of the new app some options will appear, watch faces, chart, apps, my apps, settings click on my apps then from the next screen click on All Scroll through until you find your purchased watch face which should have a "purchased MM/DD/YYY" by it click on the download icon adjacent to it. then follow any further prompts; this will download and install on your phone I haven't found a simpler way to do this when on my non-samsung android phone.
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