Instructions apply to devices running iOS 13 and later.
How Do I Request a Desktop Site on My iPhone?
Here’s how to initiate the full version in Safari for iPhone.

With the site open, select theOptionsmenu in the address bar.
It looks like two capital letter A’s.
You may need to scroll up or down to reveal the address bar.

The page will reload with the desktop version.
How Do I Always pop fire up Desktop Version of a Website?
With the site open, tap theOptionsmenu next to the address bar.

Tap the switch next toRequest Desktop Websitetoon/green.
How Do I Always Open a Desktop Version of Every Website?
Here’s what to do.

Scroll down and tapRequest Desktop Website.
Set the switch next toAll Websitestoon/green.
In Firefox, open a page and then go toMore(three horizontal lines) >Request Desktop Site.

In Microsoft Edge, tapMore(three horizontal dots), and then selectView desktop site.
In Opera, go toMore(three horizontal lines), and then turn the switch next toDesktop Siteon.
FAQ
Yes.

The steps foriPadOSare the same as using desktop mode on an iPhone.
