Firstly, Vodafone,
READ THE SMALL PRINT.
They are offering a frankly ridiculous set of contracts in which is 5G limited to 2mbps or 10bps max bandwidth (that's not a typo....) so avoid these, you only save £4 and £2 a month anyway...
However, All Unlimited Data cap plans include 5G.
The true unlimited one (in speed and price) is £30 a month with no frills
Or £36 with your choice of Sky Sports, Spotify, Now TV or Prime all on mobile..
I'm sim only with Vodafone but not on one of the unlimited plans. Recently renewed and sure I read I'd have access to 5G on a data capped plan. That said it's of no interest to me as living and working rural there will be no 5G any time soon. That and my current S10 doesn't have access to 5G either.
Isn't this 5G implementation only 20% faster then 4G on a really good day anyway?
On the S20 and S20+. According to Marques Brownlee anyway!