1- Tap Settings General Fingerprints & security Encrypt SD card.
2- Read the on-screen overview of memory card encryption and then tap CONTINUE to continue.
3- Select an option and tap ENCRYPT NOW.
• New data encryption: Encrypt only data that is saved on the memory card after encryption.
• Full encryption: Encrypt all the data currently saved on the memory card.
4- • Exclude media files: Encrypt all files, except for media files such as music, photos and videos.