I have been a Mobal customer since 2007. I have had great service all over the world as well as at home in the United States. They provide a UK cellular number that I have had no difficulty connecting to - - even on cruise ships where other providers don't work. My travel friends are jealous of my ability to receive and place calls with Mobal when they cannot.
Customer support is also outstanding and responsive. For international travel, Mobal is my "go-to" service. Ken