[jamescostian]

In iOS, Settings->Display & Brightness->View can be changed to Zoomed. Does that help?

Android has its own mechanisms: https://www.wikihow.com/Change-the-Screen-Resolution-on-Your...

Put another way, would it help to decrease the DPI rather than only adjusting text?

[alex3305]

Thanks for this. I didn't know iOS had such an option. I've just tried this setting on my wife's iPhone and it enlarges text and elements quite significantly. However it still doesn't resolve my main issue with Safari.

On my Galaxy S21+ I use both a larger text size and zoomed in screen. Both are just basic sliders in the Display settings menu. Although not all apps or System UI elements adhere to these settings, unfortunately.