You can download iOS 17 using cellular data by adjusting your settings or by manually approving the download when prompted . While Apple historically restricted large updates to Wi-Fi, newer devices and 5G networks have made downloading major software updates over a mobile plan significantly easier. Step-by-Step: Updating iOS 17 via Cellular Data
The most direct way to download iOS 17 without Wi-Fi is to enable a specific setting that allows your iPhone to use more data for system tasks. Cannot Download iOS Updates Using Cellular Data - AppleVis how to download ios 17 with cellular data