1. Update iOS to 16.0, open the settings of Apple's mobile phone, click on the photo, and then turn on the switch to display the hidden photo album. Then open the photo album APP of Apple mobile phone, select the picture you want to lock, click the three points in the lower right corner, and then click Hide to lock some pictures. Finally, open the settings of Apple's mobile phone, click on the photo, and then turn off the switch to display the hidden photo album. When you want to view these locked pictures, first go to the Settings-Photo On switch to display the hidden photo album, then click Apple Photo Album App, slide the page to the bottom, and click Hide. At this time, you can view the locked album as long as you recognize the face.

2. Considering that some people don't want to upgrade the iOS system, in fact, in addition to hiding pictures in the photo album APP of Apple's mobile phone, you can also use memo APP to lock pictures. Open iPhone Album-Album, select the photo you want to lock in My Album, then click the Share button in the lower left corner, slide the APP bar, select click Memo, you can add a text description in the storage interface, and then click Save. Open the iPhone Memo again, click the Memo folder where photos are stored, then click more icons in the upper right corner, click "Lock" in the pop-up box, and then set a password. After setting, you need to enter a password to open the viewing memo. Of course, after the picture is saved to the memo, the picture in the photo album APP can be deleted.

3. Select Add Application Restriction in iPhone screen usage time, set the usage time of photo album application, and restrict access. This method is to lock the entire album APP. Open iPhone settings-screen usage time-open screen usage time, click set screen usage time password, and press enter to set screen usage time password. Set the use time limit first, and then set the APP time limit, otherwise the effect will not be achieved. Go back to the screen usage time interface, find "App Limit", click "Add Limit", you can directly search for photos and view them, and then click "Add" in the upper right corner. Click "Next" in the upper right corner and slide to set the limited time. You can set the minimum value of "1 minute" or customize the length of each day. After setting, click "Add" in the upper right corner, and now the setting is complete. When you return to the main interface of iPhone, the photo album APP will be locked, and you need to enter the screen usage time password to continue using it.