I have a 16GB Micro SD card for my phone and i had the similar problem. My phone randomly decided not to read the card… i tried to format it and it was write-protected, so i got a Micro SD Adapter and Unlocked it then put it in my pc and formated it like that, works fine now 
| Legal | Terms of Use | Privacy Statement | Forum Terms of Service |
|
| © Western Digital Corporation or its affiliates. All rights reserved. Western Digital Technologies, Inc. is the seller of record and licensee in the Americas of SanDisk® products. |