Slowly, very slowly we see our cellphones evolving and where phone producers need help from computer producers to innovate their products the phone networks keep on limiting their services to make sure they squeeze every penny out of their customers.
Especially for people that travel a lot calling is very expensive and even if the EU is trying to put some boundaries to this madness you can still expect a huge bill when you take your cellphone abroad.
There seems to be a solution for the Netherlands, Belgium, Luxembourg and France since the creation of Transatel. The company has one offer for the four countries which should allow you to save plenty of money even though they are not the cheapest. Interesting for managers traveling to these countries regularly I would imagine.