How to delete things in the mobile phone library?

1. Open the mobile phone application and enter the corresponding photo album. 2. Select the photos to delete. There are usually two options: a. Long press the photo until the selection mode appears, and then select the photo to be deleted. B. Click the selection box in the upper right corner of the photo and select the photo to be deleted. 3. Click the delete button above or below the photo (some mobile phones slide the photo left or right) to confirm the deletion. 4. At least on some mobile phones, you need to confirm whether to delete photos again to avoid misoperation.