Not working on mobile

Problem/Motivation

I have the dropdown working like I want and have it set to Language Code using simple HTML select with a width of 60px.
Looks perfect. Using Chrome, I inspect code and view as mobile and have it looking exactly like I want.
However, when I view on an actual iphone, the dropdown is missing. It simply doesn't show.

I did not add the block the traditional way of adding it as a block via admin. Instead, I hard coded the exact location I need it into my twig theme file since I need it in a specific location that the theme block system does not allow. Had to hard code it into the twig header file. It works perfectly on desktop and laptop, but does not seem to work on iphone. I do not have an android to test android. But my guess this is the case for all mobile?

Any ideas on why this is or why its happening?
Any solutions to this?

I searched before posting and found others faced this many years ago with Drupal 7.
But those solutions no longer seem to apply now on Drupal 10.

Any suggestions?

Thank you.