Thank you for getting back to me. Well, on the last day of my trip I was messing around with some settings and instead of keeping mobile network on automatic I manually selected different ones to see what happens.
Turns out, when I selected the orange network I believe, it allowed me to pick up 4g.
I will be taking many more trips to Poland so it would be great if I didn't have to face this every time.
If there is anything you can do your end to help me that would be great.
It's always best not to use Automatic as the phone will select the best signal which may, give you what you experience or even no roaming at all.
Doubt Virgin can do much as all their roaming is controlled by Proximus of Belgium. Virgin, being an MNVO have to use another network as they can't set it up themselves, not owning a home network of their own.
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