How does Apple's mobile phone retrieve deleted photos?

Method 1: The method of backup and recovery through iTunes.

Prerequisites:

There is backup data of iPhone in iTunes, which means the photos in your iPhone need to be backed up in iTunes.

Users open iTunes, click Edit, Preferences, Devices, and there will be various time points of device backup. From here, you can recover all the data at that time point, including photos, address books, memos and other original data.

However, it should be reminded that the iPhone needs to be connected to the original backup computer to restore photos. The restored data is limited to the data backed up at that time, and subsequent data will be lost. Please think twice before recovery, and make a backup before each operation.

Methods: Hold down the Shift key on the keyboard, click Restore on iTunes, and then select a time point to restore the data. The rest of the operating system will be completed automatically.

Method 2: Restore the deleted photos through photo stream.

This method requires the iPhone to be upgraded to iOS.

System version above 5.0, and I need to open my photo stream option in iCloud settings, and also need to open my photo stream in settings, photos and cameras. If you don't need to make other choices after setting, iPhone will automatically back up your photos to iCloud. Even if you delete photos from your iPhone, you can log in to your iCloud account again, and then save the previously deleted photos from photo stream to Camera Roll.