[Guide] How to fix SD Card write issue on Xiaomi Redmi 4

Follow these simple steps to fix SD card problems and writing permission issues on Xiaomi Redmi 4 smartphone.

Fixing SD Card Permission Issue on Redmi 4

You will need root-access and file manager app with root access. You can use X-plore File Manager, ES File Explorer or Root Explorer (find download links below).

1. On your device go to “/system/etc/permissions” and find “platform.xml”.
2. Open “platform.xml” using your file manager inbuilt text editor.
   
3. Find these lines:

    <permission name="android.permission.WRITE_MEDIA_STORAGE" >
    <group gid="media_rw" />
    <group gid="sdcard_rw" />
    </permission>

4. Copy the lines above in the clipboard and paste below (save the formatting). So it look like this:

    <permission name="android.permission.WRITE_MEDIA_STORAGE" >
    <group gid="media_rw" />
    <group gid="sdcard_rw" />
    </permission>
   
    <permission name="android.permission.WRITE_MEDIA_STORAGE" >
    <group gid="media_rw" />
    <group gid="sdcard_rw" />
    </permission>

5. Now edit bottom lines like this:

    <permission name="android.permission.WRITE_MEDIA_STORAGE" >
    <group gid="media_rw" />
    <group gid="sdcard_rw" />
    </permission>
   
    <permission name="android.permission.WRITE_EXTERNAL_STORAGE" >
    <group gid="sdcard_r" />
    <group gid="sdcard_rw" />
    <group gid="media_rw" />
    </permission>

6. Save and reboot your device.

Download File Manager App:

1. X-plore File Manager v3.91.04 – X-plore v3.91.04.apk
2. ES File Explorer File Manager –  ES File Explorer v4.1.6 (563).apk
3. Root Explorer (File Manager) – Root Explorer v4.0.7.apk