Didn't work. Put it in my Samsung S8 and did not recognise. Put it in the special case and in my laptop to formats and did not recognise. Fortunately my girlfriend had a third party insert and I was finally able to format. Then inserted it in my Samsung S8 and it finally recognised and worked.... for about 1 hour, not my phone constantly tells me the SD card has been removed. Next time i will get a Samsung SD card.