TBLM Disk Micro SD Card 256GB High Speed Class 10 Micro SD SDXC Card with Adapter

Its a fake it seems to work ok till you use 14.9 G bytes then it will just loose any pictures or video sent to it. the speed is an average when its saving real data the first 14.9 g its real slow around 5 m byte/s and when it starts dumping data into a black hole it gets real fast because its not really saving anything the read time is even slower to slow to play video...I am really disappointed in amazon they should not support this kind of fraud...This is the test data....The media is likely to be defective.14.9 GByte OK (31382857 sectors)234.9 GByte DATA LOST (492817079 sectors)Details:0 KByte overwritten (0 sectors)0 KByte slightly changed (< 8 bit/sector, 0 sectors)234.9 GByte corrupted (492817079 sectors)0 KByte aliased memory (0 sectors)First error at offset: 0x00000003bdba9200Expected: 0x00000003bdba9200Found: 0x929616dae8189719H2testw version 1.3Writing speed: 19.3 MByte/sReading speed: 11.4 MByte/sH2testw v1.4

I performed a H2testw which attempted to write 248 GB but found corrupt sectors only allowing about 46GB writable, rest was corrupted which in this case meant it didn't exist. I then tried a simple file to file transfer of mpegs and it was stopped at 44gb's.

Get what u pay for

I gave this to my son for xmas and it stated it was corrupt right out of the package.

I switched back to my 64gb sd card. Somehow....the phone seems to be unstable with the 256 gb card. I was expecting to save a lot of files to card, but it was impossible to do because of stability issues with card and galaxy skypro j 7 phone.

They do not work, information is lost and it does not represent the correct amount of storage, very bad quality.Dont work in Nintendo Switch

This seems to be a counterfeit product! Lots of people have reviewed it by now ... same thing that happened to them happened to me: memory card has only a small ‘available’ amount of usable space - the rest of it, 80% is corrupted. They shouldn’t allow to sell these things online! It’s essentially stealing money from people!

Too bad no stars isn't an option.I've lost everything! Pictures of the kids when they were younger, pictures and videos of deceased family, work files! I've lost things I can NEVER get back. This memory card is apparently corrupted and I have no way to get my files back. I've googled and tried everything suggested to no avail.