In the window that opens, the system will offer you to choose what to do when downloading applications over the cellular network:
▪️ Always Allow – always download applications of any size;
▪️ Ask If Over 200 MB – ask when downloading applications that weigh more than 200 MB;
▪️ Ask First – ask before each download.
Since the first iOS release in tem has always been a limit on the file size, so that users do not accidentally downloaded it. But in the era of unlimited Internet, many people don’t need this setting.
Download iOS 13: direct download links
How to install iOS 13 now: instructions and direct links