After I bought this to use in my phone (LG G3 at the time, now Samsung Galaxy S7) it kept filling up with 64GB of files. However, after one format and a few file transfers/writes, I think it's definitely dead. I'm a bit frustrated as most of the data was static and read-only - I only wrote Spotify playlists occasionally, and the card itself never exceeded 70GB. However, it no longer accepts writes, including formatting requests, and even if I delete the partition and try to format it, it throws an error and my files remain on the card. Despite the lack of bad sectors, I suspect their time is up. I intend to format the card and get it working again in some other way, but I definitely expected this card to last a bit longer.
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