How to Hide Photos on Your Android Phone?
• In the first step, go to Settings > Privacy and safety > Private mode.
• Select your desired private mode access type. You can choose Pattern, PIN, or Password with Fingerprints as an alternative.
• After the Private mode is toggled on, you will be able to see private content. On the other side, when it is toggled off, you won’t. Each time you toggle it on, you’ll be prompted to enter your PIN, use your fingerprint, or whatever access type you chose.
• It is recommended that you turn off Auto disable in Private mode, too, so that your private content is automatically hidden when your screen turns off.
Once the private mode is turned on, you can add content from the Gallery app, Voice Recorder, or My Files. If you ever want to unhide it, simply tap More and choose Remove from Private and you’ll be asked to select a folder for the photo to be restored to.