Deleting data from iPhone doesn’t erase your data permanently. iPhone data that has been deleted remains in the iPhone storage until permanently erased. Here we have put together a step-by-step guide on how you can erase your data from iPhone permanently using either your iPhone or Mac or Windows PC.

source https://gadgets360.com/how-to/features/apple-iphone-erase-data-settings-permanently-guide-tutorial-2843349#rss-gadgets-all