micros SDXC USH 1 CLASS 10 ISSUE HELP

I have a MICROSDXC64G card for my S5 it’s not working correctly please help I had a 32go card and it worked fine, please does it have to be formatted. I formatted on my phone with options given toenough I don’t know if it’s my phone orvwhat

:smiley:   Hi Mark2876,

Dear member of SanDisk Community, welcome.

Friend, please:

1-   Test your microSD 64GB c10 U1, in a laptop directly to its port-card (not USB card-reader).
      Also, see what capacity and format, have.

2-   If still bad: in Start / My PC, on the card icon right-click, and then click in Properties / Tools / Error Checking and Repair.

3-   If still bad: try formatting with the tool (portable app, free): USB Flash SD Formatter 4.00
     Then, remove and re-plug the device.

4-   If the above steps have not solved the problem, _ do not grieve more, contact SanDisk Technical Support _ who will replace the device, if _ it’s authentic _ and is within warranty. Link: http://www.sandisk.com/about-sandisk/contact-us/

Luck.

Regards, Alfred.                                                           (Google translated)