Review on SanDisk ULTRA MicroSDXC Memory 128GB by Rusty Heredia

, I have a problem. He said that he (using ES File Explorer) had a NullPointerException (in JavaScript form). This happened on BOTH of my devices and was as severe as one of the Sandisk Ultra, meaning my main storage (the second for the wiki, thanks to Kiwix) has some videos I shot with Cinema 4K and the regular camera app . This happened on BOTH of my SanDisk Ultras. It can be read correctly, but not copied elsewhere. Even Windows 10 can't copy it to external hard drive or internal hard drive, even my Samsung can't copy it to internal storage, which means NullPointerException is the problem. However, the videos are not very important. So still 3 stars. ;-) But I can reduce it to 1 if it happens again. :-( I think there is a bad/bad sector (Are there bad sectors in microSD? I think only HDDs, old HDDs. Newer ones don't have bad sectors. And SSDs too.)