system
6
Hello,
There’re plenty of reasons cause such a situation. You should make sure that your phone supports the storage size of the SD card and if you have chosen a right mode for SD card: FAT32 or NTFS. Of course, dirt on SD card or metal wires in the card slot twist or rust may also account for the same problem. You can read a guide about Android doesn’t read SD card and solve your problem step by step.