While iOS monitors your iPhone's storage, user action is still required to guarantee that there is adequate space to allocate more files, requests, and processes. Viewing the iPhone's available storage from time to time can also help you examine how much space each app takes and determine whether it's typical or not. You may check the status of your phone's internal storage using iTunes or the Settings menu.

1. From the Home screen, select Settings.
2. Select General.
3. Select [Device] Storage.
4. You will then be sent to a new screen with device optimization advice, followed by a list of installed programs and the amount of storage each app needs.
5. Tap an app's name to see more details about its storage consumption.
6. Depending on the nature of the app, you may be able to delete portions of its contents or the app and all of its material. You can offload the app to free up storage while retaining the app's data and documents on your smartphone.
7. In most cases, you will be prompted with a Storage If your smartphone is nearing the end of its internal storage capacity and iOS can no longer free up more space on your device, you will receive an Almost Full alert.