There are several proven methods for checking an iPhone’s search history.
One option is to check the history directly within the phone’s web browser, like Safari or Chrome. You can usually find this in the bookmarks or settings menu.
Another method involves iCloud. If the iPhone’s Safari history is synced to an iCloud account, you can view it on another Apple device, like a Mac or iPad, that is logged into the same account.
For more detailed monitoring, you could use a spy app. These applications are designed to track and record a device’s activity, including browser history, and make it viewable from a separate dashboard.