Downloading iPhone XR user guide

That would depend on your WiFi speed. Usually about 5 seconds.

That depends on your connection speed. Anything from a few seconds to a few hours.

That would have to be a really slow speed for a few hours. Acoustic Coupler?

Starbucks at 1Mbps?

You must go to different Starbucks than I do, 95Mbps the last time I was downtown in Fort Worth.

108Mbps at my usual spot, Rootscoffeehouse