Hi,
Thanks for your answer.
I tried it on a different iPhone 11 that has all settings correct/turned on and has roaming working with a different sim card in it, and it is not working with my magenta SIM. When I switch it on, 3G turns on for 20 seconds and then it dissapears. I am able to make regular phone calls.
I have "Travel and Surf" selected among "My packageS". And I had to switch off the "Internet protection" as it was blocking some regular websites.
What other setting do I need to have on on myMagenta to make Roaming work?
Thank you