However, using contactless avoids signatures 99% of the time. I think I had to sign once on my last trip at a contactless terminal.
https://support.apple.com/en-us/HT207435
I've almost exclusively just tried to use it in the UK and this has been my experience at convenience stores.
ADDED: Apple's support page mostly says "Your mileage may vary." I haven't tried to do larger purchases more than once or twice when they didn't work because I don't want to be the guy holding up the line fiddling with payment options. I don't know if I got unlucky or if it's the norm.
I think that the majority of terminals in EU have the contactless option - at least in Denmark all non contactless terminals have been phased out.
https://www.creditcards.com/credit-card-news/signatures-soon...
Strangely enough, it seems that this applies to mostly transactions in North America, for some reason.
That being said, an individual payment terminal can be configured to require a signature and it might take a while to switch over. The first day they were optional my grocery store got rid of them on their terminals, even for high value transactions, which I appreciated and commented on.