I've received a 48 SIM and have activated it to try out the data speeds I'll get if I buy a plan (I intend to sign up for the €12.99 plan as long as I can get 5G service with it). However, I'm only getting 4G speeds on the card I've activated (I've tried the SIM in several devices) rather than 5G. I'm in an area with excellent 5G coverage on the Three network (I also have a Three 5G SIM which works fine in my devices).

The blurb on the website says you get 1Gb of free data when you activate your card so you can "test the speeds" you'll get before buying a plan, and that's what I'm trying to do. However, the blurb elsewhere says that you get free 5G when you buy the €12.99 plan. So do I only get 5G if I buy the €12.99 plan - in which case how can I actually test the speed I'll get before buying the plan?

Is there a chicken and egg thing going on here or am I just not going to get 5G speeds with 48 for some reason, in which case I'll probably pass.

Noige