If you download a file onto your iPhone or iPad from Safari, you can find it later in the Downloads folder of the Files app.

To learn more about this topic visit the following article:
Where to find downloads on your iPhone or iPad: https://apple.co/45Swwtm

Additional Resources:

Get Support for iPhone: http://apple.co/iPhone

To subscribe to this channel: https://www.youtube.com/c/AppleSupport

To download the Apple Support app: http://apple.co/2hFtzIv

Apple Support on Twitter: https://twitter.com/AppleSupport

For more videos, go to Youtube Apple Channel