So I bought a cheap multifunctional 5-in-1 adapter device…
https://www.amazon.co.uk/dp/B0DK718V9P?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1
And I attached it to my 3a Pro. The adapter kinda works, because I can certainly read and write to USB-A thumb drives which is nice.
But what I really wanted was the ability to use wired internet (Ethernet) through the RJ45 connector on the phone. I can't seem to get the phone to use Ethernet. Is it just a setting I'm missing somewhere?