SD Card Not Showing on Android — How to Fix It

You insert an SD card and nothing happens. No notification, no new storage, no files. Here's how to diagnose and fix SD card detection on Android.

Quick Answer

Go to Settings → Storage and check if the SD card appears but is unmounted. Tap Mount to reconnect it. If it doesn't appear at all, try the card in another device or reformat it.

Why SD Cards Stop Showing on Android

Fix 1 — Check if SD Card Is Just Unmounted

1. Open Settings → Storage
2. Look for your SD card — it may show as "Unmounted" or "Ejected"
3. Tap Mount next to it
4. Open AnExplorer → tap SD Card — it should now show your files

This is the most common fix and takes 10 seconds.

Fix 2 — Clean the SD Card Contacts

Dust, fingerprints, or corrosion on the gold contacts stop detection:

1. Remove the SD card
2. Gently wipe the gold contacts with a dry cotton swab or soft eraser
3. Reinsert and check if it's detected

Do not use liquids or alcohol — let any moisture dry completely before inserting.

Fix 3 — Remove and Reinsert the SD Card

With the phone on:

1. Settings → Storage → tap Eject (if available) to safely unmount
2. Power off the phone
3. Remove the SD card
4. Reinsert it firmly
5. Power on and check Storage again

Sometimes the physical connection is intermittent and reseating it helps.

Fix 4 — Check Formatting (exFAT vs FAT32 vs NTFS)

Android supports FAT32 and exFAT. Cards formatted as NTFS (common on Windows) are not readable on most Android devices without root.

To check and reformat using AnExplorer:

1. Open AnExplorer → Storage → long-press the SD card
2. Inspect the filesystem type shown in properties
3. If it's NTFS, back up files to PC first, then reformat to exFAT (for cards > 32 GB) or FAT32 (for cards ≤ 32 GB) using Windows Explorer → right-click → Format

::: warning Formatting erases all data on the card. Always back up first. :::

Fix 5 — Test the Card in Another Device

Insert the SD card into:

• A different Android phone
• A PC via SD card reader

If it's detected elsewhere, the problem is with your phone's card reader (hardware fault or dirty slot). If it's not detected anywhere, the card itself is damaged or corrupt.

Fix 6 — Reformat the Card (Last Resort)

If the card is detected but shows errors, reformatting fixes filesystem corruption:

1. Back up any files you need to PC first
2. In Android: Settings → Storage → SD card → Format SD card
3. Confirm — this erases everything
4. The card will now show as empty but functioning

SD Card Is Detected But Files Are Missing

If the card shows in AnExplorer but files aren't visible:

• Enable Show Hidden Files: In AnExplorer menu → Settings → Show Hidden Files
• Check if files are in a subfolder: Navigate into subdirectories — some apps create nested folders
• Files may have been deleted: Use a desktop recovery tool to attempt recovery before writing new data

Using a USB Drive Instead (OTG)

If your SD card slot is faulty, use a USB-C OTG adapter with a USB drive as an alternative. See the USB OTG guide for setup instructions.