Hi ffcwickford,
Welcome to the Community Forums! Thanks for your first post.
We've done some checks from this end and we've found that as long as your handset is 5G compatible, you should be getting the 5G signal - provided you're in a 5G ready area. You can check your mobile coverage using the Vodafone coverage checker to see if you're in a 5G ready area.
I would also recommend checking your network settings in your phone to see if 5G is selected for when available.
Hope that helps 🙂
Beth
Beth