I took the phone Samsung Galaxy Note 20 Ultra. I specially selected the Samsung card for the Samsung, since earlier there were problems of incompatibility of the phone of this line with cards from other manufacturers. At first everything was fine, then I began to notice some lags on the phone. After 6-9 months, the phone said that "There are errors on the memory card. Save the data and replace the card," but after the reboot everything continued to work. A year later - I wrote the same thing, but no reboots helped. I removed the card from the phone, tried to restore it in different ways from the computer - it did not work. When copying data from the card, I noticed that in many areas the copying speed drops to almost zero. But still copied without errors. I bought a card in China (understanding the risks), so there is nowhere to return it under the guarantee.
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