Thanks, I guess it's still in the mainland France not Channel island
Particularly when you were at Mont Saint Michel you would have been at risk of connecting to a Channel Islands network @cecilia_xinyu but at least the charges are now somewhat less than they were toeards the end of last year.
"Rest of the world" rates applied then (£1 a minute to make receive calls!), now it's (for Jersey)
Calls & voicemail within the EU and selected destinations(charged in per second increments after first 30 seconds)
Receiving calls(charged in per minute increments)
Sending texts within the EU and selected destinations
Picture messages (MMS) to a UK mobile
Weaseling out of things is important to learn. It's what separates us from the animals ... except the weasel. - Homer Simpson