As far as I am concerned, dealing with the phone not showing the SD card option issue, you can check the connection, update the phone driver, format the SD card to make it compatible with your phone, and run CHKDSK to repair your SD card. Read on and I will tell you how to perform them one by one.
Fix 1: Check the connection
First of all, let's try the simplest way -- check the connection between your phone and the SD card. You can utilize an alternative SD card adapter or SD card reader to connect the memory device and your phone.
Fix 2: Update the driver of your phone
If you ensure that the connection between your SD card and the phone is stable and firm, you can head to update the driver on your phone. An outdated phone driver always fails to detect or recognize an SD card.
Step 1: Connect your phone to your PC.
Step 2: Go to Control Panel > System > Device Manager.
Step 3: Locate and expand Portable Devices or Other Devices, depending on which one you see.
Step 4: Right-click the name of the device you connected, and then select Update Driver Software.
With these operations being conducted, insert your SD card into your phone to test if it can be detected.
Solution 3: Format your SD card
If your phone shows the SD card option, then the problem is resolved. If not, then connect the SD card to your computer to see if it can be detected.
The computer failing to show your SD card indicates that your SD card has faults. You'd better drop this one try and try a new SD card for later usage.
The computer showing up the SD card means that the file system of your SD card is incompatible with your phone. You can format the SD card on Windows here:
Before formatting your SD card, make sure you have made a full backup of all files and documents on it. Formatting will wipe out all the things on a hard drive.
Step 1: Double-click 'My Computer' (or 'This Computer') on the desktop to open it.
Step 2: Select your SD card shown on the panel and right-click it.
Step 3: Click the Format... option, and then a Format panel will pop up.
Step 4: Select FAT32 in the file system box, and click Start. Then, wait for your SD card to be formatted.
Hope these methods can deal with your trouble successfully!
